Method for determining imaging of microwave signals of a brain and system therefor, intracranial hemorrhage detection apparatus, and computer storage medium

Abstract

Embodiments of the present application relate to the technical field of brain hemorrhage detection, and particularly relate to a method for determining brain microwave signal imaging, a system thereof, an intracranial hemorrhage detection device and a computer storage medium. The method for determining brain microwave signal imaging according to the embodiments of the present application comprises the following steps: obtaining brain microwave signals; filtering out clutter of the microwave signals to obtain only brain microwave signals; and determining brain signal imaging according to the obtained only brain microwave signals. The method provided by the embodiments of the present application can more clearly display the position of the hemorrhage area in the brain due to fewer clutter points of pixels in the brain imaging.

Description

Technical Field

[0001] The embodiments of this application relate to the field of intracranial hemorrhage detection technology, specifically to a method and system for imaging microwave signals of the brain, an intracranial hemorrhage detection device, and a computer storage medium. Background Technology

[0002] The statements herein are provided only as background information in connection with this application and do not necessarily constitute prior art.

[0003] Intracranial hemorrhage is a common acute and critical illness in clinical practice. During the diagnosis process, it is necessary to clarify the condition and provide treatment as soon as possible to avoid delaying the "golden treatment time." Therefore, a reliable method for detecting intracranial hemorrhage is needed to accurately assess the patient's condition.

[0004] Currently, intracranial hemorrhage detection methods typically involve collecting microwave signals from the patient's head to determine the extent of bleeding. However, existing methods for detecting intracranial hemorrhage still have many limitations. Summary of the Invention

[0005] A brief overview of this application is provided below to offer a basic understanding of certain aspects thereof. It should be understood that this overview is not an exhaustive summary of the application. It is not intended to identify key or essential parts of the application, nor is it intended to limit its scope. Its purpose is merely to present certain concepts in a simplified form as a prelude to the more detailed description that follows.

[0006] In a first aspect, embodiments of this application provide a method for determining the imaging of microwave signals in the brain, comprising the following steps: S10: acquiring microwave signals in the brain; S20: filtering out noise in the microwave signals to obtain microwave signals only in the brain; S30: determining the imaging of the brain signals based on the microwave signals only in the brain obtained in step S20.

[0007] The method provided in the embodiments of this application, by filtering out microwave signal clutter, results in fewer clutter points in the pixels of brain imaging, and can more clearly show the location of the hemorrhage area in the brain.

[0008] Secondly, embodiments of this application also provide a system for determining the imaging of microwave signals of the brain, comprising: a microwave signal acquisition module configured to acquire microwave signals of the brain; a clutter filtering module configured to filter out clutter from the microwave signals to obtain only microwave signals of the brain; and an imaging result determination module configured to determine the imaging of the brain signals based on the microwave signals obtained by the clutter filtering module.

[0009] The system provided in the embodiments of this application, by filtering out microwave signal clutter, results in fewer clutter points in the pixels of brain imaging, and can more clearly display the location of the hemorrhage area in the brain.

[0010] Thirdly, embodiments of this application also provide a computer storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the methods of embodiments of this application.

[0011] Fourthly, embodiments of this application also provide an intracranial hemorrhage detection device, comprising: an antenna configured to acquire microwave signals from the brain; and a processor configured to be communicatively connected to the antenna for receiving microwave signals transmitted from the antenna, and further configured to execute the method of embodiments of this application. The intracranial hemorrhage detection device provided in the embodiments of this application can filter out the noise of the microwave signal collected by the antenna, thereby reducing the number of noise points in the pixels of brain imaging and making it easier to clearly display the location of the hemorrhage area in the brain.

[0012] Fifthly, embodiments of this application also provide an intracranial hemorrhage detection device, comprising: a base; a receiving portion forming a receiving space for receiving a patient's brain; a headgear disposed in the receiving space, configured to be used to fill a liquid dielectric and deformable under pressure; a signal transmission and acquisition component for transmitting microwave signals to and receiving microwave signals from the headgear; a mounting component configured to integrate the receiving portion and the signal transmission and acquisition component into the base; and a processor configured to be communicatively connected to the signal transmission and acquisition component, for receiving microwave signals transmitted from the signal transmission and acquisition component, and further configured to execute the method of embodiments of this application.

[0013] Sixthly, embodiments of this application also provide an intracranial hemorrhage detection device, comprising: a receiving portion forming a receiving space for receiving a patient's cranium; a headgear disposed in the receiving space, configured to be filled with a liquid dielectric and deformable under pressure; an inner liner disposed in the receiving space; a signal transmission and acquisition component for transmitting microwave signals to and receiving microwave signals from the headgear; a housing, in which the receiving portion and the signal transmission and acquisition component are disposed; and a processor configured to be communicatively connected to the signal transmission and acquisition component, for receiving microwave signals transmitted from the signal transmission and acquisition component, and further configured to execute the method of embodiments of this application.

[0014] In a seventh aspect, embodiments of this application also provide an intracranial hemorrhage detection device, comprising: a receiving portion, a vector network analyzer, a port extension member, a plurality of antennas, and a signal transmission line assembly; the receiving portion is used to receive a patient's brain; the vector network analyzer is configured to transmit microwave signals to the port extension member, and receive microwave signals from the port extension member, and analyze the received microwave signals; the port extension member is configured to extend the port of the vector network analyzer, receive microwave signals transmitted by the vector network analyzer, and transmit the microwave signals to one antenna; and receive corresponding microwave signals from another antenna and transmit the microwave signals to the vector network analyzer; antennas are disposed in the receiving portion, each antenna being used to receive microwave signals from the port extension member and transmit the microwave signals to the patient's brain; or to receive microwave signals transmitted from another antenna from the patient's brain and transmit the microwave signals to the port extension member; the signal transmission line assembly is used to connect each antenna to the port extension member, and to connect the port extension member to the vector network analyzer; a processor is configured to be communicatively connected to the vector network analyzer, to receive microwave signals transmitted from the vector network analyzer, and is also configured to execute the method of the embodiments of this application.

[0015] These and other advantages of this application will become more apparent from the following detailed description of preferred embodiments in conjunction with the accompanying drawings. Attached Figure Description

[0016] To further illustrate the above and other advantages and features of this application, the specific embodiments of this application will be described in more detail below with reference to the accompanying drawings. The drawings, together with the following detailed description, are included in and form a part of this specification. Elements having the same function and structure are indicated by the same reference numerals. It should be understood that these drawings only depict typical examples of this application and should not be considered as limiting the scope of this application.

[0017] Figure 1 A schematic diagram of the imaging results obtained based on the microwave signal before filtering out clutter is shown. Figure 2 A schematic diagram of the imaging result obtained by filtering out clutter from the microwave signal based on the method provided in the embodiments of this application is shown. Figure 3 A schematic diagram of an intracranial hemorrhage detection device according to an embodiment of this application is shown, wherein the housing and media container are omitted. Figure 4 This shows from another perspective Figure 3 The intracranial hemorrhage detection device shown; Figure 5 It shows Figure 3 The diagram shows a schematic of an intracranial hemorrhage detection device, with some components such as the processor omitted. Figure 6 An exploded view of an intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 7 A schematic diagram of the structure of the receiving portion of the intracranial hemorrhage detection device according to an embodiment of this application is shown; Figure 8 This shows from another perspective Figure 7 The diagram shows the structure of the receiving part.

[0018] It should be noted that the accompanying drawings are not necessarily drawn to scale, but are shown only in a schematic manner without affecting the reader's understanding.

[0019] Explanation of reference numerals in the attached figures: 10. Antenna; 151. Wire connector; 191. Vector network analyzer; 1910. Analyzer heat dissipation hole; 192. Port expansion component; 193. Signal transmission line; 1931. First horizontal extension section; 1932. Bent connection section; 20. Receiving part; 21. Peripheral part; 211. Plane; 2110. Opening; 212. Peripheral mounting hole; 22. End; 23. Antenna mounting part; 230. Mounting groove; 231. Extension part; 232. Connector; 2320. Clearance hole; 24. Head cover mounting part; 240. Groove; 241. Guide groove; 242. Inner liner positioning part; 250. Connecting plate; 251. First connecting post; 252. Second connecting post; 253. Reinforcing rib; 26. Neck support part; 27. Housing connector; 271. Housing clearance groove; 28. Liquid inlet / outlet positioning part; 30. Flexible head cover; 301. Head cover body; 31. Liquid inlet / outlet connector; 32. Vent connector; 33. First head cover mounting component; 331. Guide component; 332. Head cover mounting hole; 34. Second head cover mounting component; 40. Dielectric charging / discharging and pressurizing assembly; 41. Dielectric container; 42. Drive unit; 43. Inlet / outlet pipeline; 44. Exhaust pipeline; 46. Pressure measuring device; 47. Valve; 48. Pressure measuring pipeline; 50. Lining; 51. Lining positioning and mating part; 52. Lining clearance groove; 61. Base; 611. Bottom cover; 612. Drain hole; 613. Heat dissipation hole; 621. First mounting component; 622. Second mounting component; 623. Third mounting component; 624. Auxiliary mounting component; 6240. Mounting plate; 6241. Mounting feet; 625. Fourth mounting component; 626. Reinforcing component; 641. Shell heat dissipation hole; 642. Main shell; 6421. Main shell heat dissipation hole; 643. Front shell; 644. Rear cover; 645. Pillow; 646. Handle; 65. Processor; 652. USB splitter; 66. Fan; 67. Operating component; 68. Communication interface. Detailed Implementation

[0020] Exemplary embodiments of this application will be described below with reference to the accompanying drawings. For clarity and brevity, not all features of actual implementations are described in the specification. However, it should be understood that many implementation-specific decisions must be made in the development of any such actual embodiment to achieve the developer's specific goals, such as complying with constraints related to the system and business, and these constraints may vary depending on the implementation. Furthermore, it should be understood that while development work can be very complex and time-consuming, such development work is merely a routine task for those skilled in the art who benefit from the content of this application.

[0021] It should also be noted that, in order to avoid obscuring this application with unnecessary details, only the device structure and / or processing steps closely related to the solution according to this application are shown in the accompanying drawings, while other details that are not closely related to this application are omitted.

[0022] Currently, methods for detecting intracranial hemorrhage typically involve first acquiring microwave signals from the patient's head, and then using these signals to determine the extent of the hemorrhage. However, existing intracranial hemorrhage detection methods cannot accurately determine the extent of the hemorrhage based solely on microwave signals from the patient's head, and they also struggle to pinpoint the exact location of the hemorrhage.

[0023] Embodiments of this application provide an imaging method for determining microwave signals in the brain, which may include at least the following steps S10 to S30.

[0024] In some embodiments, S10: acquire microwave signals from the brain; S20: filter out noise from the microwave signals to obtain microwave signals from only the brain; S30: determine the imaging of the brain signals based on the microwave signals from only the brain obtained in step S20.

[0025] The method provided in the embodiments of this application, by filtering out microwave signal clutter, results in fewer clutter points in the pixels of brain imaging, and can more clearly show the location of the hemorrhage area in the brain.

[0026] In some embodiments, step S20 specifically includes the following steps: S21: determining the thickness of the matching medium between the antenna transmitting and receiving the microwave signal and the scalp of the brain; S22: determining the dielectric constant of the matching medium; S23: determining the time for the electromagnetic wave to pass through the matching medium based on the thickness and dielectric constant; S24: converting the microwave signal from the frequency domain to the time domain to obtain the time-domain microwave signal; S25: obtaining the time-domain microwave signal including only the head based on the time determined in step S23 and the time-domain microwave signal determined in step S22.

[0027] The method provided in the embodiments of this application converts microwave signals from the frequency domain to the time domain, and can remove the influence of the matching medium on the microwave signal in the time domain, thus achieving a large degree of removal of the influence of the matching medium on the scattering parameters.

[0028] In some embodiments, Figure 1 This diagram illustrates the imaging results obtained from the microwave signal before filtering out clutter. Figure 2 This diagram illustrates the imaging result obtained from the microwave signal after filtering out clutter based on the method provided in this application embodiment. Figure 1 In the hemorrhage area before noise filtering, the characteristics of the blood cell target echo signal 90° are severely masked by background clutter, making effective identification impossible; in Figure 2 In this embodiment, after filtering out noise using the method provided in this application, background clutter at the hemorrhage area is effectively suppressed, making the echo signal 900 of the blood cell target in the hemorrhage area stand out and clearly presenting a high-brightness energy convergence point. This indicates that the method in this application embodiment can significantly improve the signal-to-noise ratio of microwave signals, achieving accurate localization and visualization of the brain hemorrhage area.

[0029] In some embodiments, step S25 specifically includes the following steps: S251: Determine a window function based on time; S252: Obtain a time-domain microwave signal including only the head based on the window function and the time-domain microwave signal.

[0030] Since the matching medium is the region through which electromagnetic waves first pass in the time domain, the method provided in the embodiments of this application can greatly filter out the influence of the matching medium on microwave signals in the time domain by determining the time it takes for electromagnetic waves to pass through the matching medium.

[0031] In some embodiments, in step S251, the expression for the window function is: .

[0032] in, Represents the window function. This represents a point in time on the time axis; T represents the width of the window function, used to determine the start and end range of the intercepted signal.

[0033] The method provided in the embodiments of this application, by employing the above-mentioned window function, can balance performance and computational complexity, and through smooth cosine contraction, can effectively suppress high-frequency interference and frequent leakage.

[0034] In some embodiments, the start and end range of the intercepted signal represents a range from the start time point to the end time point.

[0035] In some embodiments, the specific value of the window function can be determined based on the specific value of the time it takes for the electromagnetic wave to pass through the matching medium.

[0036] In some embodiments, step S252 specifically includes the following step: multiplying a window function with the time-domain microwave signal to obtain a time-domain microwave signal that includes only the head. In such embodiments, multiplying the window function with the time-domain microwave signal is equivalent to adding a time gate to the signal, which can directly remove early-arriving strong reflection clutter caused by the antenna and matching medium, thereby helping to completely extract the effective microwave signal that penetrates into the brain, and thus providing a clean data source for subsequent spatially symmetric differential processing and image reconstruction algorithms.

[0037] In some embodiments, step S21 specifically includes the following steps: S211: determining the frequency domain scattering signal of the antenna's reflection port; S212: converting the frequency domain scattering signal into a time domain reflection waveform; S213: determining, based on the time domain reflection waveform, a first reflection peak corresponding to the interface between the antenna and the matching medium, and a second reflection peak corresponding to the interface between the matching medium and the scalp; S214: determining the thickness of the matching medium based on the time difference between the first and second reflection peaks and the dielectric constant of the matching medium.

[0038] The method provided in the embodiments of this application can determine the thickness of the matching medium, which dynamically changes due to differences in the head shape of different patients, without the need for contact measurement. By determining the thickness of the matching medium, strong background reflection clutter can be eliminated. Furthermore, by precisely quantifying the thickness of the matching medium, it can be converted into the absolute time required for electromagnetic waves to penetrate the matching medium, thereby providing a precise time threshold starting point for the window function's interception boundary. This avoids the problem of weak and effective brain signals being mistakenly removed or strong clutter on the surface of the matching medium not being completely filtered out due to thickness estimation errors.

[0039] In some embodiments, step S30 specifically includes the following steps: S31: Determine the radius of the antenna array, the initial value of the angle, and the average dielectric constant of the electromagnetic waves propagating in the brain; S32: Determine the coordinate position of each antenna based on the radius and the initial value of the angle; S33: Determine the grid points of the imaging area and generate a grid coordinate matrix; S34: For the microwave signal, traverse each frequency point and determine the wavenumber corresponding to each frequency point; S35: Based on the average dielectric constant and wavenumber determined in step S31, determine the transmission distance of the microwave signal propagating in each pair of transmitting and receiving antennas to each grid point by traversing each pair of transmitting and receiving antennas; S36: Determine the signal strength of each grid point based on the microwave signal and the distance determined in step S35; S37: Determine the imaging of the brain signal based on the signal strength.

[0040] The method provided in the embodiments of this application can make full use of microwave signal information of different frequencies, thereby improving the accuracy of imaging results.

[0041] In some embodiments, step S37 specifically includes the following steps: S371: weighted summation of the signal strength of each grid point based on the distance between each pair of transmitting and receiving antennas to determine a signal strength map; S372: determination of brain signal imaging based on the signal strength map.

[0042] The method provided in the embodiments of this application effectively improves the imaging resolution by weighting and summing the contributions of different antennas to the signal strength through the distance between each pair of transmitting and receiving antennas.

[0043] Embodiments of this application also provide a system for determining the imaging of microwave signals of the brain, comprising: a microwave signal acquisition module configured to acquire microwave signals of the brain; a clutter filtering module configured to filter out clutter from the microwave signals to obtain microwave signals of only the brain; and an imaging result determination module configured to determine the imaging of the brain signals based on the microwave signals obtained by the clutter filtering module.

[0044] The system provided in the embodiments of this application, by filtering out microwave signal clutter, results in fewer clutter points in the pixels of brain imaging, and can more clearly display the location of the hemorrhage area in the brain.

[0045] In some embodiments, the clutter filtering module includes: a thickness determination submodule configured to determine the thickness of a matching medium between the antenna transmitting and receiving the microwave signal and the scalp of the brain; a dielectric constant determination submodule configured to determine the dielectric constant of the matching medium; a time determination submodule configured to determine the time it takes for the electromagnetic wave to pass through the matching medium based on the thickness and the dielectric constant; a time-domain microwave signal acquisition submodule configured to convert the microwave signal from the frequency domain to the time domain to obtain a time-domain microwave signal; and a time-domain microwave signal determination submodule configured to obtain a time-domain microwave signal including only the head based on the time determined by the time determination submodule and the time-domain microwave signal determined by the dielectric constant determination submodule.

[0046] The system provided in the embodiments of this application converts microwave signals from the frequency domain to the time domain, and can remove the influence of the matching medium on the microwave signals in the time domain, thus achieving a large degree of removal of the influence of the matching medium on the scattering parameters.

[0047] In some embodiments, the time-domain microwave signal determination submodule includes: a window function determination unit configured to determine a window function based on time; and a time-domain microwave signal acquisition unit configured to obtain a time-domain microwave signal including only the header based on the window function and the time-domain microwave signal.

[0048] Since the matching medium is the region through which electromagnetic waves first pass in the time domain, the system provided in the embodiments of this application can greatly filter out the influence of the matching medium on microwave signals in the time domain by determining the time when the electromagnetic waves pass through the matching medium.

[0049] In some embodiments, in the window function determination unit, the expression of the window function is: .

[0050] in, Represents the window function. Indicates a point in time on the timeline; This represents the width of the window function, used to determine the start and end range of the intercepted signal.

[0051] The system provided in the embodiments of this application, by employing the above-mentioned window function, can balance performance and computational complexity, and through smooth cosine contraction, can effectively suppress high-frequency interference and frequent leakage.

[0052] In some embodiments, the time-domain microwave signal acquisition unit is specifically configured to obtain a time-domain microwave signal containing only the head by multiplying a window function by the time-domain microwave signal. In such an embodiment, multiplying the window function by the time-domain microwave signal is equivalent to adding a time gate to the signal, which can directly remove early-arriving strong reflection clutter caused by the antenna and matching medium, thereby helping to completely extract the effective microwave signal that penetrates into the brain, and thus providing a clean data source for subsequent spatial symmetric differential processing and image reconstruction algorithms.

[0053] In some embodiments, the thickness determination submodule includes: a frequency domain scattering signal determination unit configured to determine the frequency domain scattering signal of the antenna's reflection port; a conversion unit configured to convert the frequency domain scattering signal into a time domain reflection waveform; a reflection peak determination unit configured to determine, based on the time domain reflection waveform, a first reflection peak corresponding to the interface between the antenna and the matching medium, and a second reflection peak corresponding to the interface between the matching medium and the scalp; and a thickness determination unit configured to determine the thickness of the matching medium based on the time difference between the first reflection peak and the second reflection peak, and the dielectric constant of the matching medium.

[0054] The system provided in the embodiments of this application can determine the thickness of the matching medium, which dynamically changes due to differences in the head shape of different patients, without the need for contact measurement. By determining the thickness of the matching medium, strong background reflection clutter can be eliminated. Furthermore, by precisely quantifying the thickness of the matching medium, it can be converted into the absolute time required for electromagnetic waves to penetrate the matching medium, thereby providing a precise time threshold starting point for the window function's interception boundary. This avoids the problem of weak and effective brain signals being mistakenly removed or strong clutter on the surface of the matching medium not being completely filtered out due to thickness estimation errors.

[0055] In some embodiments, the imaging result determination module includes: an average dielectric constant determination submodule, configured to determine the radius of the antenna array, the initial value of the angle, and the average dielectric constant of electromagnetic waves propagating in the brain; a coordinate position determination submodule, configured to determine the coordinate position of each antenna based on the radius and the initial value of the angle; a grid coordinate matrix generation submodule, configured to determine grid points in the imaging area and generate a grid coordinate matrix; a wavenumber determination submodule, configured to determine the wavenumber corresponding to each frequency point by traversing each frequency point for the microwave signal; a distance determination submodule, configured to determine the transmission distance of the microwave signal propagating in each pair of transmitting and receiving antennas to each grid point based on the average dielectric constant and wavenumber determined by the average dielectric constant determination submodule; a signal strength determination submodule, configured to determine the signal strength of each grid point based on the microwave signal and the distance determined by the distance determination submodule; and an imaging result determination submodule, configured to determine the imaging of brain signals based on the signal strength.

[0056] The system provided by the embodiments of this application can make full use of microwave signal information of different frequencies, thereby improving the accuracy of imaging results.

[0057] In some embodiments, the imaging result determination submodule includes: a signal intensity map determination unit configured to perform a weighted summation of the signal intensity at each grid point based on the distance between each pair of transmitting and receiving antennas to determine a signal intensity map; and an imaging result determination unit configured to determine the imaging of brain signals based on the signal intensity map.

[0058] The system provided in the embodiments of this application effectively improves the imaging resolution by weighting and summing the contributions of different antennas to the signal strength through the distance between each pair of transmitting and receiving antennas.

[0059] An embodiment of this application also provides an intracranial hemorrhage detection device, which includes an antenna and a processor. The antenna is configured to acquire microwave signals from the brain. The processor is configured to be communicatively connected to the antenna for receiving microwave signals transmitted from the antenna, and is also configured to execute the imaging method for determining microwave signals from the brain according to the embodiments of this application.

[0060] The intracranial hemorrhage detection device provided in the embodiments of this application can filter out the noise of the microwave signal collected by the antenna, thereby reducing the number of noise points in the pixels of brain imaging and making it easier to clearly display the location of the hemorrhage area in the brain.

[0061] In some embodiments, the antenna of an intracranial hemorrhage detection device can be used to acquire microwave signals from the brain. In such embodiments, the processor and the antenna are configured to be communicatively connected to acquire the microwave signals from the brain acquired by the antenna.

[0062] In some embodiments, it can be understood that the antenna can be indirectly connected to the processor via the vector network analysis component of the intracranial hemorrhage detection device.

[0063] like Figure 3 and Figure 4 As shown, Figure 3 A schematic diagram of an intracranial hemorrhage detection device according to an embodiment of this application is shown, wherein the housing and media container are omitted. Figure 4 This shows from another perspective Figure 3 The intracranial hemorrhage detection device shown in this application may include: a receiving portion 20, a flexible headgear 30, and a dielectric filling and discharging pressurization assembly 40. The receiving portion 20 forms a receiving space for receiving the patient's brain; the flexible headgear 30 is disposed in the receiving space and is configured to be able to be filled with liquid dielectric and deformable after pressurization; the dielectric filling and discharging pressurization assembly 40 is configured to fill the flexible headgear 30 with dielectric or discharge the dielectric from the flexible headgear 30, and to pressurize the flexible headgear 30 so that the flexible headgear 30 can expand and fit against the patient's brain.

[0064] In the embodiments of this application, by setting a flexible headgear 30, after the patient's brain enters the receiving part 20, the dielectric filling and discharging pressurizing component 40 fills the flexible headgear 30 with dielectric and pressurizes the flexible headgear 30 so that the flexible headgear 30 can expand and fit the patient's brain. It can adapt to the shape of different patients' brains. Relying on the flexible deformation and fluid adaptive characteristics of the flexible headgear 30, it closely fits the contour of the patient's brain and achieves a gapless fit, which is beneficial to improve the transmission efficiency of microwave signals and thus improve the quality of transmitted or received microwave signals.

[0065] In some embodiments, the antenna 10 may be disposed on the outside of the flexible headgear 30 in the receiving portion 20, and the antenna 10 may be configured to receive microwave signals from the port extension member 192 and transmit microwave signals to the flexible headgear 30; or receive microwave signals transmitted by another antenna 10 from the flexible headgear 30 and transmit them to the port extension member 192.

[0066] In some embodiments, the intracranial hemorrhage detection device may further include a signal transmission and acquisition component, which is used to transmit microwave signals to and receive microwave signals from the flexible headgear 30, thereby determining the intracranial hemorrhage situation based on the transmitted and received microwave signals.

[0067] In some embodiments, such as Figure 4 As shown, the vector network analyzer 191 is communicatively connected to the processor 65 and is used to send microwave signals to the processor 65 for processing.

[0068] In some embodiments, such as Figure 3and Figure 4 As shown, the signal transmission and acquisition assembly may include: multiple antennas 10, a vector network analyzer 191, and a port extender 192; the vector network analyzer 191 is configured to transmit microwave signals to the port extender 192, and receive microwave signals from the port extender 192, and analyze the received microwave signals; the port extender 192 is configured to extend the port of the vector network analyzer 191, receive microwave signals transmitted by the vector network analyzer 191, transmit microwave signals to one antenna 10, and receive corresponding microwave signals from another antenna 10 and transmit them to the vector network analyzer 191; the antenna 10 is disposed on the outer side of the flexible headgear 30 in the receiving portion 20, and is configured to receive microwave signals from the port extender 192 and transmit microwave signals to the flexible headgear 30; or receive microwave signals transmitted by another antenna 10 from the flexible headgear 30 and transmit them to the port extender 192. In the embodiments of this application, by setting the port extension 192, the vector network analyzer 191 can be connected to multiple pairs of antennas 10 to transmit and receive microwave signals, thereby increasing the number of antennas 10 and improving the accuracy of detection.

[0069] In some embodiments, the accommodating space has an opening on one side to facilitate the entry of the human brain.

[0070] In some embodiments, multiple antennas 10 of the signal transmission and acquisition component are arranged in the receiving portion 20 along the same circumference; an antenna 10 for transmitting microwave signals and an antenna 10 for receiving microwave signals are collectively referred to as a pair of transmitting and receiving antennas.

[0071] In some embodiments, such as Figure 7 and Figure 8 As shown, the receiving portion 20 may include: a peripheral portion 21, an end portion 22, a plurality of antenna mounting portions 23, and a head cover mounting portion 24. The peripheral portion 21 and the end portion 22 are connected to form a receiving space. The head cover mounting portion 24 is used to install the flexible head cover 30 in the receiving space. Each antenna mounting portion 23 is used to mount an antenna 10 facing the flexible head cover 30 on the peripheral portion 21.

[0072] The embodiments of this application, by providing an antenna mounting part 23 and a headgear mounting part 24, enable the flexible headgear 30 to be mounted on the receiving part 20 and the antenna 10 to be mounted facing the flexible headgear 30. This allows the antenna 10 to transmit microwave signals to the flexible headgear 30 and receive microwave signals from the flexible headgear 30, which is beneficial for adapting the flexible headgear 30 to the shape of different patients' brains and improving the transmission efficiency of microwave signals.

[0073] In some embodiments, the headgear mounting portion 24 is connected to the end portion 22 on the inner side of the periphery portion 21.

[0074] In some embodiments, the antenna mounting portion 23 forms a plurality of mounting slots 230, which communicate with the receiving space; the antenna 10 is mounted in each mounting slot 230. Since the mounting slots 230 communicate with the receiving space, the antenna 10 can directly face the flexible headgear 30, so that after the flexible headgear 30 is pressurized and expanded, it can simultaneously fit with the patient's brain and the antenna 10, thereby improving the transmission efficiency of microwave signals.

[0075] In some embodiments, such as Figure 7 As shown, the surface of the peripheral portion 21 facing the flexible head cover 30 includes a plurality of planes 211 connected circumferentially. Each plane 211 forms an opening 2110 communicating with the mounting groove 230. The radiating port surface of the antenna 10 is flush with the plane 211 containing the opening 2110. By making the plane 211 flush with the radiating port surface of the corresponding antenna 10, it is beneficial to reduce microwave signal loss and improve the microwave signal reception quality.

[0076] In some embodiments, the antenna mounting portion 23 includes an extension portion 231 extending outward from the periphery of the opening 2110 and a connector 232 connected to the extension portion 231. The antenna 10 is connected to the connector 232, and the connector 232 forms a clearance hole 2320 for the wire connector 151 of the antenna 10 to pass through. Since the extension portion 231 extends outward from the periphery of the opening 2110, the antenna 10 can be mounted in the mounting groove 230 on the inner side of the periphery 21 without obstructing the radiating port surface of the antenna 10, thereby affecting the transmission and reception of microwave signals. At the same time, by forming a clearance hole 2320 in the connector 232, the wire connector 151 of the antenna 10 can extend to the outside through the clearance hole 2320, thereby realizing the transmission of microwave signals.

[0077] In some embodiments, the headgear mounting portion 24, the peripheral portion 21, and the end portion 22 together form a groove 240. The flexible headgear 30 can be inserted into the groove 240 formed by the receiving portion 20, and the headgear body 301 of the flexible headgear 30 can cover the groove 240. By enabling the flexible headgear 30 to be inserted into the groove 240 formed by the receiving portion 20, the flexible headgear 30 is prevented from detaching from the receiving portion 20. At the same time, since the headgear body 301 can cover the groove 240, the aesthetics are improved.

[0078] In some embodiments, the receiving portion 20 may further include an inlet / outlet positioning member 28, disposed at the bottom of the peripheral portion 21 and located between the antenna mounting portion 23 and the end portion 22, and extending to the bottom of the end portion 22; the inlet / outlet connector 31 of the flexible head cover 30 extends to the outside through the inlet / outlet positioning member 28. By providing the inlet / outlet positioning member 28 to position the inlet / outlet connector 31, displacement of the inlet / outlet connector 31 is prevented, and since the inlet / outlet positioning member 28 is located between the antenna mounting portion 23 and the end portion 22, it does not affect the installation of the antenna 10.

[0079] In some embodiments, the receiving portion 20 may further include a housing connector 27, which is detachably connected to the front housing 643 of the intracranial hemorrhage detection device to press the flexible headgear 30 between the front housing 643 and the housing connector 27 to prevent the flexible headgear 30 from rotating and falling off.

[0080] like Figure 6 As shown, in some embodiments, the flexible headgear 30 may include: a headgear body 301 and a headgear mounting fitting portion connected to the headgear body 301; the headgear body 301 is configured to be filled with a liquid dielectric and to deform under pressure so that the patient's brain can enter the headgear body 301 and fit against the patient's brain after the headgear body 301 is deformed; the liquid dielectric is configured to match the impedance of the antenna 10 and the human brain tissue; the headgear mounting fitting portion is configured to cooperate with the receiving portion 20 to mount the headgear body 301 onto the receiving portion 20. The embodiments of this application, by providing a headgear body 301 and a headgear mounting fitting part connected to the headgear body 301, can fill the headgear body 301 with a liquid dielectric that facilitates impedance matching and deform it inward by applying pressure, allowing the patient's brain to enter the headgear body 301 and fit against the patient's brain after the headgear body 301 is deformed, thereby improving the transmission efficiency of microwave signals; and the headgear mounting fitting part can be configured to cooperate with the receiving part 20, so that the headgear body 301 can be installed in the receiving part 20, preventing the headgear body 301 from moving and affecting the transmission efficiency of microwave signals.

[0081] In some embodiments, the headgear mounting portion may include a first headgear mounting member 33, which can be inserted into a groove 240 formed in the receiving portion 20, and the headgear body 301 can cover the groove 240. By allowing the first headgear mounting member 33 to be inserted into the groove 240 formed in the receiving portion 20, the first headgear mounting member 33 is prevented from detaching from the receiving portion 20, and the headgear body 301 can cover the groove 240, thus improving aesthetics.

[0082] In some embodiments, the headgear mounting portion 24 further forms a guide groove 241, and the headgear mounting mating portion may further include a guide member 331 disposed on the first headgear mounting member 33. The guide member 331 is configured to slide in the guide groove 241 of the receiving portion 20 so that the first headgear mounting member 33 can be embedded in the groove 240. Since both the headgear body 301 and the first headgear mounting member 33 are made of flexible materials, it is difficult to directly embed the first headgear mounting member 33 into the groove 240. By providing the guide member 331 to cooperate with the guide groove 241, and by pushing the guide member 331 to slide in the guide groove 241, the first headgear mounting member 33 can be embedded into the groove 240.

[0083] In some embodiments, the guide 331 protrudes from the first headgear mounting 33 to facilitate the application of force.

[0084] In some embodiments, the first headgear mounting component 33 cooperates with the headgear body 301 to prevent the headgear body 301 from moving.

[0085] In some embodiments, the headgear body 301 may abut against the headgear mounting portion 24 of the receiving portion 20 to prevent the headgear body 301 from moving toward the end portion 22, thereby avoiding interference with the detection of cerebral hemorrhage.

[0086] In some embodiments, the headgear body 301 is bonded to the first headgear mounting member 33.

[0087] In some embodiments, the first headgear mounting member 33 further forms a headgear mounting hole 332, and the periphery 21 is provided with a periphery mounting hole 212. By means of a positioning member passing through the headgear mounting hole 332 and the periphery mounting hole 212, the first headgear mounting member 33 is fixed to the receiving portion 20 (specifically fixed to the periphery 21). In such an embodiment, by means of a positioning member, the first headgear mounting member 33 is installed in the receiving portion 20, which can both ensure the fixation of the flexible headgear 30 and facilitate the replacement of the flexible headgear 30.

[0088] In some embodiments, the positioning element may be a positioning pin.

[0089] In some embodiments, the peripheral mounting hole 212 corresponds to the guide groove 241. By configuring the guide member 331 to slide in the guide groove 241 of the receiving portion 20, the peripheral mounting hole 212 can be aligned with the head cover mounting hole 332 formed by the first head cover mounting member 33 of the flexible head cover 30, thereby facilitating the replacement of the flexible head cover 30.

[0090] In some embodiments, the number of headgear mounting holes 332 and guide members 331 are the same, and the position of each headgear mounting hole 332 is spaced apart from the corresponding guide member 331 along the extending direction of the first headgear mounting member 33; when the guide member 331 slides to the bottom in the guide groove 241, the headgear mounting hole 332 can be aligned with the peripheral mounting hole 212 of the receiving part 20, thereby simplifying the assembly of the first headgear mounting member 33 and the receiving part 20.

[0091] In some embodiments, the guide 331 is located at the end of the first headgear mounting member 33 away from the headgear body 301, and the guide groove 241 and the recess 240 have the same depth. When the guide 331 slides to the bottom in the guide groove 241, the first headgear mounting member 33 also reaches the bottom of the recess 240, so as to facilitate the assembly of the first headgear mounting member 33 with the receiving part 20.

[0092] In some embodiments, the headgear mounting mating part further includes a second headgear mounting member 34, which is connected to the headgear body 301 on the side away from the first headgear mounting member 33. When the front shell 643 of the intracranial hemorrhage detection device is detachably connected to the receiving part 20, the second headgear mounting member 34 can be pressed to prevent the flexible headgear 30 from rotating and falling off.

[0093] In some embodiments, the flexible headgear 30 may further include: a liquid inlet / outlet connector 31, in fluid communication with the headgear body 301, for supplying liquid dielectric to and from the headgear body 301. The liquid inlet / outlet connector 31 is connected to the bottom of the headgear body 301. In such an embodiment, liquid dielectric can be supplied to and discharged from the headgear body 301 through the liquid inlet / outlet connector 31.

[0094] In some embodiments, the outer surface of the headgear body 301 is flush with the outer surface of the first headgear mounting member 33; the thickness of the first headgear mounting member 33 is less than the thickness of the headgear body 301; the inlet / outlet connector 31 is connected to the side of the bottom of the headgear body 301 and extends inside the first headgear mounting member 33 toward the side away from the second headgear mounting member 34. In such an embodiment, it is beneficial for the headgear body 301 and the first headgear mounting member 33 to fit snugly against the inner wall of the receiving portion 20, while the inlet / outlet connector 31 can be extended outward without occupying the space at the bottom of the receiving portion 20 for mounting the antenna 10.

[0095] In some embodiments, the flexible headgear 30 may further include an exhaust connector 32, disposed on the top of the headgear body 301, for venting air outward when liquid is filled into the headgear body 301 using the liquid inlet / outlet connector 31, and for allowing liquid to flow out from the exhaust connector 32 when the headgear body 301 is filled with liquid. By providing the exhaust connector 32 on the top of the headgear body 301, liquid can be smoothly filled into the headgear body 301 through the liquid inlet / outlet connector 31 by venting air outward, and the headgear body 301 can be filled with liquid, thereby improving the transmission efficiency of microwave signals.

[0096] In some embodiments, a housing relief groove 271 is formed on the top of the housing connector 27 to allow the exhaust connector 32 of the flexible headgear 30 to pass through. The exhaust connector 32 extends beyond the receiving portion 20 through the housing relief groove 271 and then extends along the periphery 21 toward the end portion 22. The housing relief groove 271 can limit the exhaust connector 32 to prevent it from moving or shifting, ensuring that the exhaust connector 32 is in the highest position, thereby preventing air residue in the headgear body 301.

[0097] In some embodiments, the flexible headgear 30, when filled with liquid dielectric, is not circular to match the shape of the patient's brain. Specifically, when the flexible headgear 30 is installed in the receiving portion 20, the length of the flexible headgear 30 in the height direction is greater than its length in the horizontal direction.

[0098] In some embodiments, the dielectric filling and pressurizing assembly 40 may include: a dielectric container 41, an inlet / outlet liquid line 43, an exhaust line 44, and a drive member 42; the dielectric container 41 is used to contain liquid dielectric; the drive member 42 is used to drive the liquid dielectric to flow between the dielectric container 41 and the flexible headgear 30 via the inlet / outlet liquid line 43, and to pressurize the flexible headgear 30 through the inlet / outlet liquid line 43 after the flexible headgear 30 is filled with liquid dielectric, so that the flexible headgear 30 expands and fits against the brain; when the drive member 42 drives the liquid dielectric to flow into the flexible headgear 30, the exhaust line 44 is used to discharge gas from the flexible headgear 30; when the drive member 42 pressurizes the flexible headgear 30, the exhaust line 44 is disconnected. In such an embodiment, liquid can be smoothly introduced and pressurized into the flexible headgear 30.

[0099] In some embodiments, the drive element 42 is a pump.

[0100] In some embodiments, the inlet / outlet lines 43 connect the inlet / outlet connectors 31 of the flexible head sleeve 30 to the medium container 41, and the vent line 44 connects the vent connector 32 of the flexible head sleeve 30 to the medium container 41. The dielectric charging / discharging pressurization assembly 40 may further include a liquid detection element, a pressure measuring element 46, and a valve 47. The liquid detection element detects liquid in the vent line 44 to determine the filling amount of the flexible head sleeve 30; the pressure measuring element 46 measures the pressure within the flexible head sleeve 30; the valve 47 is disposed in the vent line 44 and is configured to disconnect the vent line 44 when the liquid detection element detects liquid in the vent line 44, thereby pressurizing the flexible head sleeve 30 using the drive element 42. In such an embodiment, since the vent connector 32 is located at the top, when the flexible head sleeve 30 is filled with dielectric, the dielectric enters the vent line 44, and when the liquid detection element detects the presence of liquid in the vent line 44, it indicates that the flexible head sleeve 30 is filled with dielectric. At this point, after disconnecting the exhaust pipe 44 via valve 47, pressure can be applied to the flexible headgear 30 using the drive unit 42, causing the flexible headgear 30 to expand and fit snugly against the brain. The pressure measuring unit 46 is used to measure the pressure inside the flexible headgear 30, so that the pressure value measured by the pressure measuring unit 46 can be used to determine whether to stop the drive unit 42 from continuing to apply pressure, ensuring that the pressure on the patient's brain is within an appropriate range.

[0101] In some embodiments, the liquid detection element may be disposed in the exhaust pipe 44.

[0102] In some embodiments, the dielectric charging and discharging pressurization assembly 40 may further include: a pressure measuring line 48 in fluid communication with the exhaust line 44 upstream of the valve 47; and a pressure measuring element 46 disposed in the pressure measuring line 48. By providing the pressure measuring line 48, the pressure inside the flexible head sleeve 30 can be measured when the exhaust line 44 is disconnected from the medium container 41.

[0103] In some embodiments, such as Figure 7 and Figure 8 As shown, the receiving portion 20 may include a peripheral portion 21, an end portion 22, and a plurality of antenna mounting portions 23. The peripheral portion 21 and the end portion 22 are connected to form a receiving space. The antenna mounting portions 23 are disposed on the peripheral portion 21. The flexible head cover 30 is connected to the peripheral portion 21. Each antenna 10 of the signal transmission and acquisition assembly is mounted on a corresponding antenna mounting portion 23. In this embodiment, the peripheral portion 21 of the receiving portion 20 can be used to mount the antenna mounting portions 23 and the flexible head cover 30, thereby enabling the antenna 10 to transmit microwave signals to the flexible head cover 30 and receive microwave signals from the flexible head cover 30.

[0104] In some embodiments, the antenna mounting portion 23 forms a plurality of mounting slots 230, which communicate with the receiving space; the antenna 10 is mounted in each mounting slot 230. Since the mounting slots 230 communicate with the receiving space, the antenna 10 can directly face the flexible headgear 30, so that after the flexible headgear 30 is pressurized and expanded, it can simultaneously fit with the patient's brain and the antenna 10, thereby improving the transmission efficiency of microwave signals.

[0105] In some embodiments, such as Figure 7 As shown, the surface of the peripheral portion 21 facing the flexible head cover 30 includes a plurality of planes 211 connected circumferentially. Each plane 211 forms an opening 2110 communicating with the mounting groove 230. The radiating port surface of the antenna 10 is flush with the plane 211 containing the opening 2110. By making the plane 211 flush with the radiating port surface of the corresponding antenna 10, it is beneficial to reduce microwave signal loss and improve the microwave signal reception quality.

[0106] In some embodiments, the antenna mounting portion 23 includes an extension portion 231 extending outward from the periphery of the opening 2110 and a connector 232 connected to the extension portion 231. The antenna 10 is connected to the connector 232, and the connector 232 forms a clearance hole 2320 for the wire connector 151 of the antenna 10 to pass through. Since the extension portion 231 extends outward from the periphery of the opening 2110, the antenna 10 can be mounted in the mounting groove 230 on the inner side of the periphery 21 without obstructing the radiating port surface of the antenna 10, thereby affecting the transmission and reception of microwave signals. At the same time, by forming a clearance hole 2320 in the connector 232, the wire connector 151 of the antenna 10 can extend to the outside through the clearance hole 2320, thereby realizing the transmission of microwave signals.

[0107] In some embodiments, the detection device may further include: a liner 50 disposed radially inside the headgear mounting portion 24, the headgear mounting portion 24 being further configured to prevent the liner 50 from detaching. The liner 50 improves the aesthetics of the interior of the receiving portion 20.

[0108] In some embodiments, such as Figure 7 As shown, the headgear mounting part 24 forms an inner lining positioning member 242, such as Figure 6 As shown, the inner liner 50 forms an inner liner positioning mating part 51 that mates with the inner liner positioning member 242, so that the inner liner 50 is positioned by the mating of the inner liner positioning member 242 and the inner liner positioning mating part 51, and the inner liner 50 is prevented from detaching.

[0109] In some embodiments, the liner positioning fitting portion 51 is a positioning groove extending along the extension direction of the peripheral portion 21; the liner positioning member 242 is a protrusion extending along the extension direction of the peripheral portion 21, and the positioning groove and the protrusion slide into each other to prevent the liner 50 from dislodging. This arrangement simplifies the assembly of the liner 50.

[0110] In some embodiments, the liner 50 forms a liner clearance groove 52 to make way for the guide 331, thereby facilitating the engagement of the guide 331 with the guide groove 241, and also enabling the flexible headgear 30 to be disassembled and assembled without removing the liner 50.

[0111] In some embodiments, the liner 50 may be made of the same material as the flexible headgear 30 to improve aesthetics. In some embodiments, both the liner 50 and the flexible headgear 30 may be made of silicone.

[0112] In some embodiments, the detection device may further include: a base 61 and a mounting assembly. The receiving portion 20, the vector network analyzer 191, and the port extension member 192 are mounted above the base 61 via the mounting assembly. The port extension member 192 is disposed between the receiving portion 20 and the vector network analyzer 191, and is disposed facing the end 22 of the receiving portion 20. Since the antenna 10 is disposed in the receiving portion 20, the arrangement of the signal transmission line 193 for connecting the antenna 10 and the port extension member 192 is advantageous because the port extension member 192 is disposed facing the end 22 of the receiving portion 20. By disposing the port extension member 192 between the receiving portion 20 and the vector network analyzer 191, and making the vector network analyzer 191 face the port extension member 192, the arrangement of the signal transmission line for connecting the vector network analyzer 191 and the port extension member 192 is also advantageous. Meanwhile, since both the vector network analyzer 191 and the port extension 192 are located at the rear of the receiving portion 20, rather than at the bottom, leakage of the liquid dielectric can be avoided, preventing contamination and damage to the vector network analyzer 191 and the port extension 192. Furthermore, since a flexible headgear 30 is also provided inside the receiving portion 20, placing both the vector network analyzer 191 and the port extension 192 at the rear of the receiving portion 20, rather than at the bottom, helps to reduce the height of the receiving portion 20, preventing the patient's head from being too high after entering the flexible headgear 30, thus ensuring comfort.

[0113] In some embodiments, such as Figure 3 and Figure 5 As shown, the mounting assembly may include: a first mounting member 621 disposed on a base 61, and a vector network analyzer 191 and a port extension member 192 mounted opposite each other on both sides of the first mounting member 621. A receiving portion 20 is connected to the first mounting member 621 on the side facing the port extension member 192. In this embodiment, since the receiving portion 20 is connected to the first mounting member 621 on the side facing the port extension member 192, and the vector network analyzer 191 and the port extension member 192 are mounted opposite each other on both sides of the first mounting member 621, the receiving portion 20, the port extension member 192, and the vector network analyzer 191 can be arranged sequentially at intervals, thereby facilitating wiring.

[0114] In some embodiments, the first mounting member 621 is a metal plate extending in a direction perpendicular to the base 61.

[0115] In some embodiments, the mounting assembly may further include: a second mounting member 622 and a third mounting member 623, which are disposed on the base 61; the receiving portion 20 is connected to the third mounting member 623 on the side opposite to the port extension 192, and is also connected to the second mounting member 622 on the side facing the port extension 192, thereby improving the stability of the receiving portion 20 and allowing for a more reasonable height setting of the receiving portion 20. In some embodiments, the receiving portion 20 may further include a neck support portion 26, which is connected to the peripheral portion 21 on the side away from the end 22. The neck support portion 26 provides support for the patient's neck and is connected to the third mounting member 623 above the third mounting member 623, thereby providing stable support for the patient's neck by the third mounting member 623.

[0116] In some embodiments, such as Figure 8 As shown, the receiving portion 20 includes a mounting fitting portion disposed at the end 22 for engaging with the first mounting member 621 and the second mounting member 622, thereby connecting the receiving portion 20 with the first mounting member 621 and the second mounting member 622.

[0117] In some embodiments, the mounting mating portion may include a plurality of connecting plates 250 extending from the end 22 in a direction away from the periphery 21, a plurality of first connecting posts 251 disposed on the connecting plates 250, and a plurality of second connecting posts 252. The first connecting posts 251 extend in a direction away from the periphery 21, and the connecting plates 250 are connected to the first mounting member 621 by the engagement of fasteners passing through the first mounting member 621 and the first connecting posts 251. The second connecting posts 252 are perpendicular to the extending direction of the first connecting posts 251, and the connecting plates 250 are connected to the second mounting member 622 by the engagement of fasteners passing through the second mounting member 622 and the second connecting posts 252. Since the antenna 10 is mounted in the receiving portion 20 and the flexible headgear 30 is mounted in the receiving portion 20, the stability requirements for the receiving portion 20 are higher. The above-described connection method can improve the stability of the receiving portion 20.

[0118] In some embodiments, there are two second mounting members 622, which are disposed opposite to each other on both sides of the connecting plate 250 to improve the stability of the receiving portion 20.

[0119] In some embodiments, the receiving portion 20 further includes a plurality of reinforcing ribs 253, which are used to increase the strength of the connecting plate 250.

[0120] In some embodiments, such as Figure 4 As shown, the mounting assembly also includes an auxiliary mounting component 624, which is connected to the first mounting component 621 and is used to clamp the vector network analyzer 191 between the auxiliary mounting component 624 and the first mounting component 621; thereby mounting the vector network analyzer 191 onto the first mounting component 621.

[0121] In some embodiments, the auxiliary mounting member 624 may include a mounting plate 6240 disposed parallel to the first mounting member 621 and mounting legs 6241 for connecting the mounting plate 6240 to the first mounting member 621. The mounting plate 6240 has a flange bent toward the first mounting member 621 for clamping and limiting the vector network analyzer 191, thereby eliminating the need to provide mounting holes or mounting members in the vector network analyzer 191 itself for connection with the first mounting member 621.

[0122] In some embodiments, the vector network analyzer 191 has heat dissipation holes 1910 on both sides of the mounting feet 6241, and a fan is provided inside the vector network analyzer 191 to force air to flow through the heat dissipation holes 1910 to dissipate heat from the vector network analyzer 191.

[0123] In some embodiments, such as Figures 3 to 5As shown, the mounting assembly may further include a fourth mounting member 625, which is connected to the top of the first mounting member 621 and is used to mount the valve 47 and the pressure measuring element 46. Since the height of the receiving part 20 is higher than that of the first mounting member 621, mounting the valve 47 and the pressure measuring element 46 on the fourth mounting member 625 not only makes reasonable use of space, but also facilitates the connection of the valve 47 and the pressure measuring element 46 to the exhaust pipe 44.

[0124] In some embodiments, the intracranial hemorrhage detection device may include: a processor 65, and a signal transmission and acquisition component electrically connected to the processor 65 for transmitting microwave signals to the processor 65 for processing.

[0125] In some embodiments, multiple antennas 10 of the signal transmission and acquisition component are arranged in the receiving portion 20 along the same circumference; an antenna 10 for transmitting microwave signals and an antenna 10 for receiving microwave signals are collectively referred to as a pair of transmitting and receiving antennas.

[0126] In some embodiments, the processor 65 is mounted on the side of the auxiliary mounting bracket 624 opposite to the vector network analyzer 191, which also removes the processor 65 from the base 61 to avoid contamination by leaked dielectrics. At the same time, it also allows the processor 65, the vector network analyzer 191, and the port expansion bracket 192 to be set close together, which is conducive to wiring and makes the layout of the entire intracranial hemorrhage detection device more compact.

[0127] In some embodiments, the inlet / outlet connector 31 is quickly connected to the inlet / outlet pipeline 43, the vent connector 32 is quickly connected to the vent pipeline 44, and the inlet / outlet pipeline 43 and the vent connector 32 are quickly connected to the medium container 41 respectively.

[0128] In some embodiments, the intracranial hemorrhage detection device may include a housing that mates with a receiving portion 20 and a base 61 to enclose the receiving portion 20 and the signal transmission and acquisition components, thereby improving aesthetics and providing protection for the signal transmission and acquisition components.

[0129] In some embodiments, the housing forms two sets of housing heat dissipation holes 641 arranged opposite to each other, facing the heat dissipation holes 1910 on both sides of the vector network analyzer 191, for airflow, thereby facilitating heat dissipation of the vector network analyzer 191.

[0130] In some embodiments, the intracranial hemorrhage detection device may include: a plurality of fans 66 disposed inside the housing and facing the housing heat dissipation hole 641, for driving ambient air into the housing, and through the analysis element heat dissipation hole 1910 into the vector network analysis element 191 to dissipate heat from the vector network analysis element 191 before leaving through the other side housing heat dissipation hole 641.

[0131] In some embodiments, such as Figure 6As shown, the housing may include a main housing 642, a front housing 643, and a rear cover 644. The main housing 642 is detachably connected to the base 61, the front housing 643 is detachably connected to the receiving portion 20, and the rear cover 644 is detachably connected to the main housing 642. The dielectric receiving member 41 is detachably mounted on the rear cover 644. In this embodiment, dividing the housing into a main housing 642, a front housing 643, and a rear cover 644 facilitates the assembly of the housing and also facilitates the removal of the dielectric receiving member 41 for dielectric replacement.

[0132] In some embodiments, the side of the main housing 642 opposite to the receiving portion 20 is recessed toward the receiving portion 20, thereby forming a space for receiving the media receiving member 41; the rear cover 644 is L-shaped and detachably connected to the recess of the main housing 642 for installing the media receiving member 41.

[0133] In some embodiments, the main housing 642 forms a handle 646 above the recess to facilitate the transfer of the intracranial hemorrhage detection device.

[0134] In some embodiments, the main shell 642 is further provided with a heat dissipation hole 6421 below the recess for dissipating heat from the processor 65.

[0135] In some embodiments, such as Figure 6 As shown, the flexible headgear 30 may also include a second headgear mounting member 34, which is connected to the headgear body 301. The front shell 643 is detachably connected to the receiving portion 20 and is used to press the second headgear mounting member 34 of the flexible headgear 30 to prevent the flexible headgear 30 from rotating.

[0136] In some embodiments, such as Figure 3 As shown, the housing may also include a pillow portion 645, which is detachably connected to a neck support portion 26 to provide support for the patient's neck and improve aesthetics.

[0137] In some embodiments, the mounting assembly further includes a reinforcement 626 for engaging with the pillow portion 645 to provide support.

[0138] In some embodiments, such as Figure 5 As shown, the base 61 is provided with an opening and a bottom cover 611 for opening or closing the opening. The opening is located directly below the inlet / outlet positioning member 28, thereby facilitating the disassembly and assembly of the inlet / outlet pipe 43 and the inlet / outlet connector 31 by opening the bottom cover 611.

[0139] In some embodiments, the opening is located between the two second mounting members 622 and on the side of the first mounting member 621 facing the receiving portion 20, so as not to affect the overall installation strength.

[0140] In some embodiments, the bottom cover 611 is hollowed out, which facilitates the outward discharge of leakage at the connection between the inlet / outlet pipe 43 and the inlet / outlet connector 31, and also allows for heat dissipation of the processor 65 and the vector network analyzer 191.

[0141] In some embodiments, such as Figure 6 As shown, the base 61 has a drain hole 612 located below the connection between the drive unit 42 and the inlet / outlet pipe 43 and the exhaust pipe 44, for draining liquid in case of leakage.

[0142] In some embodiments, the intracranial hemorrhage detection device may further include an operating element 67 and a plurality of data communication interfaces 68, disposed on the side of the main housing 642 opposite to the receiving portion 20 and located below the rear cover 644. Since the processor 65 is also disposed on the side opposite to the receiving portion 20, placing the operating element 67 and the plurality of communication interfaces 68 at the rear of the main housing 642 below the rear cover 644 facilitates wiring. The operating element 67 may be a button or a touch screen.

[0143] In some embodiments, such as Figure 4 As shown, the intracranial hemorrhage detection device may further include: a USB splitter 652, disposed on the side of the base 61 facing away from the processor 65 and the receiving portion 20, for connecting to multiple communication interfaces 68 to expand the communication interfaces of the processor 65. Figure 5 As shown, the base 61 has a heat dissipation hole 613 located below the USB splitter 652 for heat dissipation of the USB splitter 652.

[0144] In some embodiments, the driver 42 and the USB splitter 652 are disposed on the side of the base 61 away from the receiving portion 20 to make efficient use of space.

[0145] In some embodiments, the signal transmission and acquisition assembly may further include multiple signal transmission lines 193 for connecting the antenna 10 and the port extension 192. For example... Figure 5 As shown, the signal transmission line 193 may include a first horizontal extension 1931 and a bent connecting section 1932 connected to the first horizontal extension 1931. The first horizontal extension 1931 extends along the periphery 21 of the receiving portion 20 and is used for detachable connection with the wire connector 151; the bent connecting section 1932 is used for detachable connection with the connector of the port expansion member 192. In this embodiment, since the first horizontal extensions 1931 of each signal transmission line 193 are arranged in parallel, and each bent connecting section 1932 is detachably connected to the connector of the port expansion member 192, it is beneficial to simplify wiring and also to ensure that adjacent signal transmission lines 193 are spaced apart and not pressed together, thus avoiding interference with microwave signal transmission.

[0146] Embodiments of this application also provide an intracranial hemorrhage detection device, comprising: a base; a receiving portion forming a receiving space for receiving a patient's cranium; a headgear disposed in the receiving space, configured to be filled with a liquid dielectric and deformable under pressure; a signal transmission and acquisition component for transmitting microwave signals to and receiving microwave signals from the headgear; a mounting component configured to integrate the receiving portion and the signal transmission and acquisition component into the base; and a processor configured to be communicatively connected to the signal transmission and acquisition component, for receiving microwave signals transmitted from the signal transmission and acquisition component, and further configured to execute the method of the embodiments of this application.

[0147] In some embodiments, the signal transmission and acquisition component includes: a vector network analyzer, a port extender, and a plurality of antennas; the vector network analyzer is configured to transmit microwave signals to the port extender, and to receive microwave signals from the port extender, and to analyze the received microwave signals; the port extender is configured to extend the port of the vector network analyzer, receive microwave signals transmitted by the vector network analyzer, and transmit the microwave signals to one antenna; and receive corresponding microwave signals from another antenna and transmit the microwave signals to the vector network analyzer; the antenna is disposed on the outside of the headgear in the receiving portion, and is configured to receive microwave signals from the port extender and transmit the microwave signals to the headgear; or, receive microwave signals transmitted by another antenna from the headgear and transmit the microwave signals to the port extender.

[0148] In some embodiments, the mounting assembly includes: a first mounting assembly configured to integrate the accommodating portion, the port extension, and the vector network analyzer onto the base; and a second mounting member and a third mounting member configured to fix the accommodating portion relative to the base with a predetermined spacing in the height direction.

[0149] In some embodiments, the first mounting assembly includes: a first mounting member disposed on a base, a port extension member and a vector network analyzer mounted opposite each other on both sides of the first mounting member, a receiving portion connected to the first mounting member on the side where the port extension member is located, and the port extension member disposed between the receiving portion and the vector network analyzer; and an auxiliary mounting member disposed on the base and connected to the first mounting member, and configured to clamp the vector network analyzer between the auxiliary mounting member and the first mounting member.

[0150] In some embodiments, the auxiliary mounting member includes: a main body portion configured to conform to the surface of the vector network analyzer remote from the first mounting member and having a flange bent toward the first mounting member for clamping and limiting the vector network analyzer; and a connecting portion configured to connect to the flange of the main body portion and to the first mounting member to connect the main body portion and the first mounting member, thereby clamping the vector network analyzer between the main body portion and the first mounting member.

[0151] In some embodiments, the second mounting member and the third mounting member are disposed on the base; the side of the receiving portion facing the port extension member is connected to the second mounting member, and the side of the receiving portion away from the port extension member is connected to the third mounting member.

[0152] In some embodiments, the receiving portion includes a mounting receiving portion, a neck support portion, and a mounting mating portion; the mounting receiving portion forms a receiving space having an opening for the patient's brain to enter and exit, the mounting receiving portion is further configured to mount a headgear in the receiving space, and to mount an antenna; the neck support portion is connected to the opening of the mounting receiving portion for supporting the patient's neck; the mounting mating portion is located on the side of the mounting receiving portion opposite to the opening and is configured to mate with a first mounting member and a second mounting member to connect the mounting receiving portion to the first mounting member and the second mounting member.

[0153] In some embodiments, the neck support is disposed above and connected to the third mounting member.

[0154] In some embodiments, the mounting mating portion includes: a mounting body portion disposed on the mounting receiving portion; a reinforcing portion disposed on the mounting body portion for increasing the strength of the mounting body portion; a first connecting mating portion disposed on the mounting body portion and extending toward a first mounting member; a second connecting mating portion disposed on the mounting body portion and extending in a direction perpendicular to the extending direction of the first connecting mating portion; the first connecting mating portion is configured to engage with a fastener passing through the first mounting member to connect the mounting body portion to the first mounting member; the second connecting mating portion is configured to engage with a fastener passing through the second mounting member to connect the mounting body portion to the second mounting member.

[0155] In some embodiments, there are multiple second mounting members, which are disposed opposite to each other on both sides of the mounting body.

[0156] Embodiments of this application also provide an intracranial hemorrhage detection device, comprising: a receiving portion forming a receiving space for receiving a patient's cranium; a headgear disposed in the receiving space, configured to be filled with a liquid dielectric and deformable under pressure; an inner liner disposed in the receiving space; a signal transmission and acquisition component for transmitting microwave signals to and receiving microwave signals from the headgear; a housing, in which the receiving portion and the signal transmission and acquisition component are disposed; and a processor configured to be communicatively connected to the signal transmission and acquisition component, for receiving microwave signals transmitted from the signal transmission and acquisition component, and further configured to execute the method of the embodiments of this application.

[0157] In some embodiments, the signal transmission and acquisition component includes: a vector network analyzer, a port extender, and a plurality of antennas; the vector network analyzer is configured to transmit microwave signals to the port extender, and to receive microwave signals from the port extender, and to analyze the received microwave signals; the port extender is configured to extend the port of the vector network analyzer, receive microwave signals transmitted by the vector network analyzer, and transmit the microwave signals to one antenna; and receive corresponding microwave signals from another antenna and transmit the microwave signals to the vector network analyzer; the antenna is disposed on the outside of the headgear in the receiving portion, and is configured to receive microwave signals from the port extender and transmit the microwave signals to the headgear; or, receive microwave signals transmitted by another antenna from the headgear and transmit the microwave signals to the port extender.

[0158] In some embodiments, the receiving portion includes: a periphery and an end portion connected to form a receiving space, the receiving space forming an opening for the patient's brain to enter and exit; a headgear mounting portion configured to connect to the end portion on the inner side of the periphery for mounting the headgear in the receiving space; a plurality of antenna mounting portions, each antenna mounting portion for mounting an antenna facing the headgear onto the periphery; and a shell connecting portion connected to the periphery at the opening and configured to be detachably connected to a shell to press the headgear between the shell connecting portion and the shell to prevent the headgear from rotating or falling off; wherein an inner liner is provided in the headgear mounting portion.

[0159] In some embodiments, the headgear includes: a headgear body configured to be filled with a liquid dielectric and deformable upon pressurization to allow the patient's brain to enter the headgear body, and to conform to the patient's brain after deformation; the liquid dielectric configured to match the impedance of the antenna and the brain; a first headgear mounting fitting portion connected to the headgear body and configured to mate with the headgear mounting portion to mount the headgear body into the receiving space; a second headgear mounting fitting portion connected to the headgear body, wherein a shell and a shell connecting portion are detachably connected to press the second headgear mounting fitting portion between the shell and the shell connecting portion; a liquid inlet / outlet component fluidly communicating with the headgear body for allowing the liquid dielectric to enter and exit the headgear body; and an exhaust component disposed on the headgear body for venting air when the headgear body is filled with liquid using the liquid inlet / outlet component, and for allowing liquid to flow out from the exhaust component when the headgear body is filled with liquid.

[0160] In some embodiments, the headgear mounting portion, the periphery, and the end portion together form a groove, the first headgear mounting mating portion is configured to be able to be embedded in the groove, and the headgear body is able to cover the groove.

[0161] In some embodiments, the headgear mounting portion is configured to form a guide groove, and the first headgear mounting mating portion is configured to form a guide portion, the guide portion being slidable in the guide groove so that the first headgear mounting mating portion can be embedded in the groove.

[0162] In some embodiments, the second headgear mounting mating part is connected to the headgear body on the side away from the first headgear mounting mating part; the liquid inlet / outlet component is connected to the bottom of the headgear body and is disposed on the side where the first headgear mounting mating part is located; the exhaust component is disposed on the top of the headgear body and is disposed on the side where the second headgear mounting mating part is located.

[0163] In some embodiments, the top of the housing connection is configured to form a housing relief groove for the passage of the exhaust component.

[0164] In some embodiments, the end is configured to form an opening so that the inlet / outlet fluid element can extend from the receiving space to the external space through the opening; a liner is disposed between the end and the headgear to cover the opening at the end; the liner is disposed radially inside the headgear mounting portion, which is configured to prevent the liner from detaching.

[0165] In some embodiments, the headgear mounting portion is configured to form an inner liner positioning portion, the inner liner is configured to form an inner liner positioning mating portion, and the inner liner positioning portion and the inner liner positioning mating portion are configured to cooperate to position the inner liner.

[0166] In some embodiments, the liner positioning mating part is configured as a positioning groove extending in the extension direction of the periphery, and the liner positioning part is configured as a protrusion extending in the extension direction of the periphery. The positioning groove and the protrusion slide into each other to position the liner.

[0167] In some embodiments, the liner is configured to form a liner clearance groove to make way for the guide portion of the headgear so that the guide portion can engage with the guide groove.

[0168] Embodiments of this application also provide an intracranial hemorrhage detection device, comprising: a receiving portion, a vector network analyzer, a port extender, a plurality of antennas, and a signal transmission line assembly; the receiving portion is used to receive a patient's brain; the vector network analyzer is configured to transmit microwave signals to the port extender, and receive microwave signals from the port extender, and analyze the received microwave signals; the port extender is configured to extend the port of the vector network analyzer, receive microwave signals transmitted by the vector network analyzer, and transmit the microwave signals to one antenna; and receive corresponding microwave signals from another antenna and transmit the microwave signals to the vector network analyzer; antennas are disposed in the receiving portion, each antenna being used to receive microwave signals from the port extender and transmit the microwave signals to the patient's brain; or to receive microwave signals transmitted from another antenna from the patient's brain and transmit the microwave signals to the port extender; the signal transmission line assembly is used to connect each antenna to the port extender, and to connect the port extender to the vector network analyzer; a processor is configured to be communicatively connected to the vector network analyzer, to receive microwave signals transmitted from the vector network analyzer, and is also configured to execute the method of the embodiments of this application.

[0169] In some embodiments, a plurality of antennas are arranged at equal intervals around the periphery of the receiving portion.

[0170] In some embodiments, the port extension includes: a port extension body, two first connectors connected to the port extension body, and a plurality of second connectors; the two first connectors are used to connect to a vector network analyzer via a signal transmission line group to receive microwave signals emitted by the vector network analyzer or to emit microwave signals to the vector network analyzer; each second connector is used to connect to a corresponding antenna via a signal transmission line group to transmit microwave signals from the vector network analyzer to the antenna or to receive corresponding microwave signals from the antenna; the two first connectors can be connected to any two different second connectors respectively.

[0171] In some embodiments, the port extension is disposed between the receiving portion and the vector network analyzer.

[0172] In some embodiments, the port expansion body includes two main surfaces and four side surfaces arranged opposite to each other; wherein the two opposite side surfaces are parallel to each other and the two adjacent side surfaces are perpendicular to each other; the two main surfaces face the receiving part and the vector network analyzer respectively; two first connectors are respectively disposed at two vertices of the port expansion body; a plurality of second connectors are respectively disposed on the four side surfaces, and the number of second connectors on each side surface is equal.

[0173] In some embodiments, the signal transmission line group includes: four first signal transmission line groups, each first signal transmission line group being respectively connected to a plurality of second connectors disposed on one side and a corresponding antenna; and a second signal transmission line group for connecting the first connectors and the vector network analyzer.

[0174] In some embodiments, each first signal transmission line group includes a plurality of first signal transmission lines, and the number of first signal transmission lines in each first signal transmission line group is equal; the first signal transmission lines of the four first signal transmission line groups are configured to be centrally symmetrical about the center point of the port expansion body.

[0175] In some embodiments, each first signal transmission line includes: a first extension, a bend, and a second extension; one end of the first extension is detachably connected to a second connector disposed on either side, and the other end is connected to the bend, the first extension being configured to extend in a direction perpendicular to and away from the side; one end of the bend is connected to the first extension, and the other end is connected to the second extension, the bend being configured to extend in a curved manner; one end of the second extension is connected to the bend, and the other end is detachably connected to an antenna, the second extension being configured to extend along the periphery of the receiving portion.

[0176] In some embodiments, the bent section of the first signal transmission line is configured to bend in the direction of the central axis of the side perpendicular to the side where the second connector is located; and the first signal transmission line is configured to be symmetrical about the central axis of the side where the second connector is located.

[0177] In some embodiments, the second signal transmission line group includes two second signal transmission lines, each second signal transmission line including a third extension, a loop segment, and a fourth extension; the third extension is detachably connected to the first connector and the other end is connected to the loop segment, the third extension is configured to extend away from the first connector; one end of the loop segment is connected to the third extension and the other end is connected to the fourth extension, the loop segment is configured to bend away from the port extension body; one end of the fourth extension is connected to the loop segment and the other end is connected to the vector network analyzer, the fourth extension is configured to extend horizontally.

[0178] Embodiments of this application also provide a computer storage medium having a computer program stored thereon, the computer program being executed by a processor to implement the methods of the embodiments of this application.

[0179] Regarding the embodiments of this application, it should also be noted that, without conflict, the embodiments of this application and the features in the embodiments can be combined with each other to obtain new embodiments.

[0180] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. The scope of protection of this application shall be determined by the scope of the claims.

Claims

1. A method for imaging microwave signals in the brain, characterized in that, It includes the following steps: S10: Acquire microwave signals from the brain; S20: Filter out noise from the microwave signal to obtain microwave signals that only contain brain signals; S30: Based on the microwave signals from only the brain obtained in step S20, determine the imaging of the brain signals.

2. The method according to claim 1, characterized in that, Step S20 specifically includes the following steps: S21: Determine the thickness of the matching medium between the antenna transmitting the microwave signal and the antenna receiving the microwave signal and the scalp of the brain; S22: Determine the dielectric constant of the matching medium; S23: Determine the time it takes for the electromagnetic wave to pass through the matching medium based on the thickness and the dielectric constant; S24: Convert the microwave signal from the frequency domain to the time domain to obtain the time-domain microwave signal of the microwave signal; S25: Based on the time determined in step S23 and the time-domain microwave signal determined in step S22, obtain a time-domain microwave signal that includes only the head.

3. The method according to claim 2, characterized in that, Step S25 specifically includes the following steps: S251: Determine the window function based on the time; S252: Based on the window function and the time-domain microwave signal, obtain a time-domain microwave signal that includes only the head.

4. The method according to claim 3, characterized in that, In step S251, the expression for the window function is: ； in, This represents the window function. Indicates a point in time on the timeline; This represents the width of the window function, used to determine the start and end range of the intercepted signal.

5. The method according to claim 3, characterized in that, Step S252 specifically includes the following steps: Multiply the window function by the time-domain microwave signal to obtain a time-domain microwave signal that includes only the head.

6. The method according to any one of claims 2-5, characterized in that, Step S21 specifically includes the following steps: S211: Determine the frequency domain scattering signal of the antenna's reflection port; S212: Convert the frequency domain scattering signal into a time domain reflection waveform; S213: Based on the time-domain reflection waveform, determine the first reflection peak corresponding to the interface between the antenna and the matching medium, and the second reflection peak corresponding to the interface between the matching medium and the scalp. S214: Determine the thickness of the matching medium based on the time difference between the first reflection peak and the second reflection peak, and the dielectric constant of the matching medium.

7. The method according to claim 1, characterized in that, Step S30 specifically includes the following steps: S31: Determine the radius of the antenna array, the initial value of the angle, and the average dielectric constant of electromagnetic waves propagating in the brain; S32: Determine the coordinate position of each antenna based on the radius and the initial value of the angle; S33: Determine the grid points of the imaging area and generate the grid coordinate matrix; S34: For the microwave signal, traverse each frequency point and determine the wave number corresponding to each frequency point; S35: Based on the average dielectric constant and wavenumber determined in step S31, determine the transmission distance of the microwave signal propagating in each pair of transmitting and receiving antennas to each grid point by traversing each pair of transmitting and receiving antennas. S36: Determine the signal strength of each grid point based on the microwave signal and the distance determined in step S35; S37: Based on the signal intensity, determine the imaging of the brain signal.

8. The method according to claim 7, characterized in that, Step S37 specifically includes the following steps: S371: Based on the distance between each pair of transmitting and receiving antennas, the signal strength of each grid point is weighted and summed to determine the signal strength map; S372: Based on the signal intensity map, determine the imaging of the brain signal.

9. A system for imaging microwave signals in the brain, characterized in that, It includes: A microwave signal acquisition module, configured to acquire microwave signals from the brain; A clutter filtering module is configured to filter out clutter from the microwave signal to obtain only the microwave signal from the brain. The imaging result determination module is configured to determine the imaging of brain signals based on the microwave signals of only the brain obtained by the clutter filtering module.

10. The system according to claim 9, characterized in that, The clutter filtering module includes: A thickness determination submodule is configured to determine the thickness of the matching medium between the antenna transmitting and receiving the microwave signal and the scalp of the brain. A dielectric constant determination submodule is configured to determine the dielectric constant of the matching medium; The time determination submodule is configured to determine the time it takes for an electromagnetic wave to pass through the matching medium based on the thickness and the dielectric constant. A time-domain microwave signal acquisition submodule is configured to convert the microwave signal from the frequency domain to the time domain to obtain the time-domain microwave signal of the microwave signal; The time-domain microwave signal determination submodule is configured to obtain a time-domain microwave signal including only the head based on the time determined by the time determination submodule and the time-domain microwave signal determined by the dielectric constant determination submodule.

11. The system according to claim 10, characterized in that, The time-domain microwave signal determination submodule includes: A window function determination unit is configured to determine a window function based on the time. A time-domain microwave signal acquisition unit is configured to obtain a time-domain microwave signal including only the head based on the window function and the time-domain microwave signal.

12. The system according to claim 11, characterized in that, In the window function determination unit, the expression of the window function is: ； in, This represents the window function. Indicates a point in time on the timeline; This represents the width of the window function, used to determine the start and end range of the intercepted signal.

13. The system according to claim 11, characterized in that, The time-domain microwave signal acquisition unit is specifically configured to obtain a time-domain microwave signal containing only the head in the following manner: Multiply the window function by the time-domain microwave signal to obtain a time-domain microwave signal that includes only the head.

14. The system according to any one of claims 10-13, characterized in that, The thickness determination submodule includes: A frequency domain scattering signal determination unit is configured to determine the frequency domain scattering signal of the reflection port of the antenna; A conversion unit configured to convert the frequency-domain scattering signal into a time-domain reflection waveform; The reflection peak determination unit is configured to determine, based on the time-domain reflection waveform, a first reflection peak corresponding to the interface between the antenna and the matching medium, and a second reflection peak corresponding to the interface between the matching medium and the scalp. The thickness determination unit is configured to determine the thickness of the matching medium based on the time difference between the first reflection peak and the second reflection peak, and the dielectric constant of the matching medium.

15. The system according to claim 9, characterized in that, The imaging result determination module includes: The average dielectric constant determination submodule is configured to determine the radius of the antenna array, the initial value of the angle, and the average dielectric constant of electromagnetic waves propagating in the brain. The coordinate position determination submodule is configured to determine the coordinate position of each antenna based on the radius and the initial value of the angle. The grid coordinate matrix generation submodule is set to determine the grid points of the imaging area and generate a grid coordinate matrix. The wavenumber determination submodule is configured to traverse each frequency point for the microwave signal and determine the wavenumber corresponding to each frequency point. The distance determination submodule is configured to determine the transmission distance of the microwave signal propagating in each pair of transmit and receive antennas to each grid point by traversing each pair of transmit and receive antennas based on the average dielectric constant determined by the average dielectric constant determination submodule and the wave number. The signal strength determination submodule is configured to determine the signal strength of each grid point based on the microwave signal and the distance determined by the distance determination submodule. The imaging result determination submodule is configured to determine the imaging of the brain signal based on the signal intensity.

16. The system according to claim 15, characterized in that, The imaging result determination submodule includes: The signal strength map determination unit is configured to perform a weighted sum of the signal strength of each grid point based on the distance between each pair of transmitting and receiving antennas to determine the signal strength map; The imaging result determination unit is configured to determine the imaging of the brain signal based on the signal intensity map.

17. A computer storage medium, characterized in that, It stores a computer program thereon, which is executed by a processor to implement the method as described in any one of claims 1-8.

18. An intracranial hemorrhage detection device, characterized in that, It includes: An antenna configured to acquire microwave signals from the brain; A processor configured to communicate with the antenna for receiving microwave signals transmitted from the antenna, and further configured to perform the method according to any one of claims 1-8.

19. An intracranial hemorrhage detection device, characterized in that, include: seat body; The receiving section forms a space to accommodate the patient's skull; A headgear, disposed in the receiving space, is configured to be used to fill a liquid dielectric and to be deformable under pressure; A signal transmission and acquisition component is used to transmit microwave signals to the headgear and receive microwave signals from the headgear. The mounting components are configured to integrate the receiving portion and the signal transmission and acquisition components into the base body; A processor configured to communicate with the signal transmission and acquisition component, for receiving microwave signals transmitted from the signal transmission and acquisition component, and further configured to perform the method according to any one of claims 1-8.

20. A device for detecting intracranial hemorrhage, characterized in that, include: The receiving section forms a space to accommodate the patient's skull; A headgear, disposed in the receiving space, is configured to be used to fill a liquid dielectric and to deform under pressure; A liner is provided in the receiving space; A signal transmission and acquisition component is used to transmit microwave signals to the headgear and receive microwave signals from the headgear. The housing, the receiving part and the signal transmission and acquisition assembly are disposed within the housing; A processor configured to communicate with the signal transmission and acquisition component, for receiving microwave signals transmitted from the signal transmission and acquisition component, and further configured to perform the method according to any one of claims 1-8.

21. A device for detecting intracranial hemorrhage, characterized in that, It includes: a housing section Vector network analyzer, port expansion unit, multiple antennas, and signal transmission line assembly; The receiving section is used to receive the patient's brain; The vector network analyzer is configured to send microwave signals to the port extender, receive microwave signals from the port extender, and analyze the received microwave signals. The port extender is configured to extend the port of the vector network analyzer, receive the microwave signal sent by the vector network analyzer, and transmit the microwave signal to one of the antennas; And receive corresponding microwave signals from another antenna and transmit the microwave signals to the vector network analyzer; The antenna is disposed in the receiving part, and each antenna is used to receive microwave signals from the port extension and transmit the microwave signals to the patient's brain; Alternatively, microwave signals emitted by another antenna can be received from the patient's brain and transmitted to the port extension. The signal transmission line group is used to connect each of the antennas to the port extension, and to connect the port extension to the vector network analyzer; A processor configured to communicate with the vector network analyzer, for receiving microwave signals transmitted from the vector network analyzer, and further configured to perform the method according to any one of claims 1-8.

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