Patient support apparatus, medical device imaging method, medical imaging apparatus, and medical imaging system

Abstract

The present application provides a patient support device, a medical equipment imaging method, a medical imaging device and a medical imaging system, wherein the patient support device is provided with a plurality of wave traps and a cable assembly, the wave traps are sleeved on the cable assembly, the cable assembly is used for being connected with a receiver, and the wave traps can move and / or rotate in the patient support device. When the patient support device is used for examining a region of interest, the approximate region of the region of interest can be preset according to previous reports or preliminary diagnosis, when a patient lies on the patient support device for detection, the wave traps are moved along the width direction of the patient support device and / or rotated around the length direction of the patient support device. Until the length direction of the cross section of the wave traps is arranged along the line between the geometric center point of the region of interest and the geometric center point of the wave traps, thereby realizing the minimum influence on the medical imaging system.

Description

Technical Field

[0001] This invention relates to the field of medical devices, specifically to a patient support device, a medical device imaging method, a medical imaging device, and a medical imaging system. Background Technology

[0002] For medical patient support devices, such as integrated PET-MR (Positron Emission Tomography-Magnetic Resonance) equipment, the magnetic resonance radio frequency coil, coil interface, coil lead-out cables, and traps superimposed on the cables inevitably obstruct or penetrate the entire imaging area within the aperture. Since the PET detector module is generally arranged around the imaging area, the metal in the cables and the traps within the aperture all hinder gamma photons from the patient, reducing the count rate obtained by the detector module, thus attenuating the correction effect and ultimately deteriorating the imaging quality of the PET-MR equipment. Currently, there is a lack of optimal solutions in the industry for the interference of these cables on images. Summary of the Invention

[0003] The purpose of this invention is to provide a patient support device, a medical device imaging method, a medical imaging device, and a medical imaging system. Based on prior knowledge of the approximate distribution of tumor regions of interest that require focused attention, the invention utilizes a reasonable bed board and receiving link planning, and dynamically and adaptively adjusts the position of the notch filter to minimize the blocking effect of the notch filter on photons, thereby reducing the loss of detector module count rate and improving imaging quality.

[0004] To achieve the above objectives, the present invention provides a patient support device, including a support platform. The support platform contains a plurality of notch filters, a plurality of coil interfaces, and a cable assembly. The notch filters are sleeved on the cable assembly, which is used to connect to a receiver and the coil interfaces. The coil interfaces are used to connect to a radio frequency (RF) coil, so that RF signals received by the RF coil are transmitted to the receiver via the cable assembly connected to the coil interfaces. The notch filters can be driven by a driving device to move and / or rotate within the support platform.

[0005] Optionally, the cable assembly includes a data transmission cable and a power supply cable arranged in parallel, wherein the data transmission cable is made of a non-metallic material.

[0006] Optionally, the cable assembly extends along the length of the support platform, with one end of the cable assembly extending outside the support platform and connected to the power supply module and / or data processing device.

[0007] Optionally, the receiver is also provided on the support platform, and the receiver is located near the end of the support platform.

[0008] The present invention also provides an imaging method applied to any of the above-mentioned patient support devices, comprising the following steps: acquiring the location information of the region of interest of the part to be scanned of the subject; acquiring the location information of the geometric center point of the region of interest based on the location information of the region of interest; controlling the notch filter to move and / or rotate within the support platform based on the location information of the geometric center point of the region of interest; and activating the medical imaging system to scan and image the part to be scanned of the subject.

[0009] Optionally, the medical imaging system includes multiple detector modules connected end-to-end to form a ring-shaped detector module array; the imaging method further includes: controlling the notch filter to move and / or rotate within the support platform, such that the axis of the cross-section of the notch filter in the length direction is located in the gap between any two adjacent detector modules.

[0010] Optionally, the notch filter moves and / or rotates within the support platform, including: controlling the notch filter to move along the width direction of the support platform and / or rotate about the length direction of the support platform, such that the axis of the length direction of the cross-section of the notch filter coincides with the line connecting the geometric center point of the region of interest and the geometric center point of the notch filter.

[0011] The present invention also provides an imaging device, comprising: a first acquisition module configured to acquire region of interest (ROI) location information of an examination object located on a support platform of a patient support device described above; a first processing module configured to acquire location information of the geometric center point of the RIO based on the RIO location information; a first control module configured to control a notch filter to move along the width direction of the support platform and / or rotate around the length direction of the support platform based on the location information of the geometric center point of the RIO, such that the axis of the cross-section of the notch filter in the length direction coincides with the line connecting the geometric center point of the RIO and the geometric center point of the notch filter; and a second control module configured to control the support platform to enter the scanning cavity of a medical imaging system and to activate the medical imaging system to scan and image the area to be examined of the examination object.

[0012] The present invention also provides a medical imaging system, comprising: a first imaging device, a second imaging device, and a patient support device as described in any of the preceding claims, or the medical imaging device; the isocenter point of the first imaging device is coaxial with the isocenter point of the second imaging device; wherein the patient support device is movable along the axial direction of the scanning cavity of the medical imaging system to enter and exit the scanning cavity; the imaging device is configured to implement the imaging method as described in any of the preceding claims.

[0013] Optionally, the second imaging device is located radially inside the first imaging device. The second imaging device has a hollow cylindrical detection system, the hollow cavity of which is the scanning cavity. The detection system consists of multiple detection rings, which are formed by multiple detector modules connected end to end and surrounding each other.

[0014] The patient support device, medical device imaging method, medical imaging device, and medical imaging system provided by this invention have the following beneficial effects:

[0015] When the patient support device is used to examine the region of interest, the approximate area of ​​the region of interest can be preset based on previous reports or preliminary diagnoses. While the patient lies on the patient support device for examination, the notch filter is moved along the width direction of the patient support device and / or rotated around its length direction. This continues until the length direction of the notch filter's cross-section extends along the line connecting the geometric center point of the region of interest and the geometric center point of the notch filter. This allows the use of the attenuation law of X-ray intensity after passing through an object, and the optimization and control of the cable arrangement in the direction of X-ray irradiation, thereby minimizing the impact of the notch filter and cable assembly on the medical imaging system. Through the optimized arrangement of this invention, the interference of metal in each cable on the image of the medical imaging system is reduced to an extremely low level.

[0016] The present invention also provides a medical imaging method. Since the method is applied to any of the above-mentioned patient support devices, the method can reduce the image interference to the medical imaging system to a very low level and improve the imaging quality.

[0017] The present invention also provides a medical imaging device, which, since it is used to perform any of the imaging methods described above, can reduce image interference to the medical imaging system to a very low level and improve image quality.

[0018] The present invention also provides a medical imaging system, which, since it includes any of the above-mentioned patient support devices, can reduce image interference to the medical imaging system to a very low level and improve imaging quality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of a patient support device provided in an embodiment of the present invention;

[0020] Figure 2 A schematic diagram showing the relationship between the support platform, the notch filter, and the medical imaging system provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram illustrating the principle of a patient support device and imaging method provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic flowchart of a medical imaging method provided in an embodiment of the present invention;

[0023] Figure 5 This is a block diagram of a medical imaging device provided in an embodiment of the present invention;

[0024] Figure 6 This is a cross-sectional view of a medical imaging system provided in an embodiment of the present invention;

[0025] Figure 7 This is a front view of a medical imaging system provided according to an embodiment of the present invention;

[0026] Figure 8 This is a three-dimensional structural diagram of a medical imaging system provided in another embodiment of the present invention;

[0027] The attached figures are labeled as follows:

[0028] 1-Support platform; 11-Cable assembly; 12-Notch filter; Z-Length direction of support platform; X1-Width direction of support platform; X2-Length direction of notch filter cross-section;

[0029] 2-Receiver; 21-Coil interface; 22-Power supply module;

[0030] 3-Medical imaging system; 30-Scanning cavity; 31-Detector module; 32-RF coil; 301-First imaging device; 302-Second imaging device; 3011-MR main magnet; 3012-MR gradient coil; 3013-MR volume emission coil;

[0031] 41-Data processing device; 42-Power supply module; 43-Drive device; 44-Central control device; 45-Region of interest;

[0032] 100 - First acquisition module; 101 - First processing module; 111 - First control module; 112 - Second control module. Detailed Implementation

[0033] To make the objectives, advantages, and features of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the drawings are all in a very simplified form and are not drawn to scale, and are only used to facilitate and clarify the explanation of the embodiments of this invention. Furthermore, the structures shown in the drawings are often part of the actual structures. In particular, different figures may emphasize different aspects and may sometimes use different scales.

[0034] It should be understood that when an element or layer is referred to as "on" or "connected to" other elements or layers, it may be directly on or connected to other elements or layers, or may include intervening elements or layers. Conversely, when an element is referred to as "directly on" or "directly connected to" other elements or layers, intervening elements or layers are not included. Although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this invention, the first element, component, area, layer, or portion discussed below may be referred to as a second element, component, area, layer, or portion. Spatial relation terms such as "below," "under," "below," "above," "on top," "above," etc., may be used herein for convenience of description to describe the relationship between one element or feature shown in the figures and other elements or features. It should be understood that, in addition to the orientations shown in the figures, spatial relational terms are intended to also include different orientations of the devices in use and operation. For example, if the devices in the figures are flipped, then elements or features described as “below,” “under,” or “below” will be oriented “on” other elements or features. Devices may be oriented additionally (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly. The terminology used herein is intended only to describe particular embodiments and is not intended to limit the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “comprising” is used to identify the inclusion of features, steps, operations, elements, and / or components, but does not exclude the inclusion or addition of one or more other features, steps, operations, elements, components, and / or groups. When used herein, the terms “and / or” include any and all combinations of the associated listed items.

[0035] The purpose of this invention is to provide a patient support device, a medical device imaging method, a medical imaging device, and a medical imaging system. Based on prior knowledge of the approximate distribution of tumor regions of interest that require focused attention, the invention utilizes a reasonable bed board and receiving link planning, and dynamically and adaptively adjusts the position of the notch filter to minimize the blocking effect of the notch filter on photons, thereby reducing the loss of detector count rate and improving imaging quality.

[0036] To achieve the above objectives, the present invention provides a patient support device and a patient support device thereof, please refer to... Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the structure of a patient support device provided in an embodiment of the present invention. Figure 2 This is a schematic diagram illustrating the relationship between a patient support device, a notch filter, and a medical imaging system according to an embodiment of the present invention. Figure 1 and Figure 2 As shown, the patient support device includes a receiver 2 and a support platform 1; the medical imaging system 3 forms a scanning cavity; the support platform 1 is movable along the axial direction of the scanning cavity to move into and out of the scanning cavity; the receiver 2 is used to connect to an RF coil 32; the support platform 1 is provided with a plurality of notch filters 12 and a cable assembly 11, the plurality of notch filters 12 are sleeved on the cable assembly 11, the cable assembly 11 is connected to the receiver 2, and the notch filters 12 can be driven by a driving device to move and / or rotate within the support platform 1.

[0037] When the patient (or the subject of examination) is positioned above the patient support device, and the medical imaging system is preparing to scan the patient, the approximate location of the region of interest (or lesion) 45 can be determined based on previous reports or preliminary diagnoses. When the patient, according to the scanning protocol, lies on the support platform 1 and enters or prepares to enter the medical imaging system for scanning, the drive device moves and / or rotates the notch filter 12 within the support platform 1. This continues until the length direction X2 of the notch filter 12's cross-section extends along the line connecting the geometric center point of the region of interest 45 and the geometric center point of the notch filter 12. In other words, the notch filter 12 is controlled to move along the width direction of the support platform and / or rotate around the length direction Z of the support platform 1, so that the axis of the length direction X2 of the notch filter 12's cross-section coincides with the line connecting the geometric center point of the region of interest and the geometric center point of the notch filter 12. This minimizes the impact of the notch filter 12 on the medical imaging system 3. With the optimized settings of the present invention, the metal in each cable of the patient support device causes extremely low interference to the image of the patient support device.

[0038] Preferably, the cable assembly 11 includes a data transmission cable and a power supply cable arranged in parallel, forming a flat cable assembly. A plurality of notch filters 12 are sleeved on the cable assembly 11, causing the cable assembly 11 to move and / or rotate synchronously with the notch filters 12. This minimizes the imaging interference of the metal in the cable assembly 11 on the medical imaging system 3.

[0039] The principle of reducing image interference in this invention will be explained in detail below.

[0040] Taking PET-MR as an example, according to the imaging principle of PET-MR, during the treatment process, the patient first ingests a contrast agent. Under the action of PET-MR, photons are generated in the patient's body and emitted outward. The intensity of the photon rays satisfies the following relationship:

[0041] I d =I0e -μd

[0042] In the formula I d I0 is the intensity of the attenuated ray, e is the natural constant, μ is the attenuation coefficient, and d is the width of the ray through the material.

[0043] That is, the rays emitted from region of interest 45 will be affected by the irradiation width of the notch filter 12. Please refer to... Figure 3 , Figure 3 This is a schematic diagram illustrating the attenuation of a gamma-ray point source by a notch filter according to an embodiment of the present invention. Figure 3 As shown, to more intuitively illustrate the difference in counting loss caused by different placement methods of the notch filter 12, those skilled in the art can approximate the cross-section of the notch filter 12 as a rectangle, with a width of D and a length of n*D. The region of interest within the human body is analogous to a gamma-ray point source, and the photon rays can be considered as rays originating from this gamma-ray point source. When the notch filter 12 is a certain distance from the center point, multiple rays can be equivalently represented as parallel rays.

[0044] Please refer to Figure 2 and Figure 3 The cross-sectional length direction X2 of the notch filter 12 extends along the line connecting the geometric center point of the region of interest 45 and the geometric center point of the notch filter 12. The length direction line of the notch filter 12 is parallel to the ray. At this time, the width of the ray passing through the material is D, and the energy loss is calculated as follows:

[0045] ΔI v =I0(1-e -μnD )

[0046] When the long axis of the notch filter is perpendicular to the ray, the width of the ray passing through the material is n*D, and the energy loss is calculated as follows:

[0047] ΔI h =nI0(1-e -μD )

[0048] Let e -μD =x, according to the properties of exponential functions, x must be less than 1;

[0049]

[0050] It can be seen that the mixed cables inside the notch filter are arranged in parallel as flat cables. The length direction X2 of the cross-section of the notch filter 12 extends along the line connecting the geometric center point of the region of interest 45 and the geometric center point of the notch filter 12, which can minimize the loss of X-ray intensity, thereby minimizing the influence of the metal in the cable assembly 11 on the medical imaging system 3.

[0051] Preferably, the data transmission cable is made of a non-metallic material, specifically, it can be optical fiber, or simply optical fiber, a type of fiber made of glass or plastic that uses the principle of total internal reflection to transmit light. The fine optical fiber is encapsulated in a plastic sheath, allowing it to bend without breaking. Typically, a transmitting device at one end of the optical fiber uses a light-emitting diode or a laser beam to transmit light pulses into the fiber, while a receiving device at the other end uses a photosensitive element to detect the pulses. Cables containing optical fibers are called optical cables. Because the transmission loss of information in optical fibers is much lower than the loss of electricity in electrical wires, and because the main raw material is silicon, which is abundant and relatively easy to mine, optical fibers are inexpensive, making them a popular medium for long-distance information transmission. Using a non-metallic material in the data transmission cable greatly reduces the metal content in the cable assembly 11 while ensuring data transmission functionality, further reducing imaging interference with the medical imaging system 3. It should be understood that the data transmission cable can be communicatively connected to a data processing device 41 to process relevant data.

[0052] Please continue to refer to this. Figure 1 Preferably, the detection device further includes a drive device 43, which is used to drive the notch filter 12 to move and / or rotate. It should be understood that the drive device 43 may be the same driver that drives the support platform 1, but receives different instructions and drives different objects; or it may be a separate driver specifically for driving the notch filter 12. The transmission medium of the drive device 43 may be cables, air pipes, mechanical components, etc., but it is not limited thereto.

[0053] Please continue to refer to this. Figure 1Preferably, the receiver is mounted on the patient support device. In an exemplary embodiment, the receiver 2 is positioned near the end of the support platform 1. The end of the support platform 1 typically has ample unused space; positioning the receiver 2 near the end of the support platform 1 fully utilizes this space and further optimizes the wiring. Since the receiver 2 is positioned on the support platform 1 and outside the scanning cavity, the data transmission cables and electrical wires between the receiver 2 and the support platform 1 are concentrated within the receiver 2 and the support platform 1, avoiding the routing of numerous mixed cables and further reducing the interference of metal in the cables on the imaging of the medical imaging system 3.

[0054] Please continue to refer to this. Figure 1 Furthermore, the detection device also includes several coil interfaces 21, which are disposed on the receiver 2 and / or the support platform 1. The RF coil 32 and the receiver 2 are connected through the coil interfaces 21. The receiver 2 and / or the support platform 1 are provided with several coil interfaces 21, which are used for communication and / or electrical connection with the RF coil 32. The coil interfaces 21 are connected to the receiver 2 via data transmission cables. The hardware form of the coil interface 21 can be a multi-core hybrid board connector, which interfaces with the RF coil 32 for various signals. For example, it can receive RF induction signals from multiple channels of the RF coil 32 for amplification, filtering, analog-to-digital conversion, decimation filtering, and other signal processing; output a tuning / detuning control DC signal to the RF coil 32 to put a specific RF coil 32 unit in a tuned or detuned state; and read the identification number (or ID information) and factory information originally stored in the coil from the RF coil 32. The coil interface 21 can also be used to power active devices inside the RF coil 32, such as low-noise amplifiers (LNAs). As can be seen from the above information, a large number of signal interfaces are required between the RF coil 32 and the receiver 2. For example, for a certain RF coil 32, 12 RF coaxial cables, 6 DC control lines, 2 LNA power supply lines, and 3 coil identification interface signals are needed, totaling 23 cables. This is a large number and requires a specific, bulky, mixed-assembly cable to bundle the cables together. However, in this invention, the coil interface 21 is directly installed on the receiver 2 and / or the support platform 1, for example, as a circuit board connector directly soldered to the circuit board inside the receiver 2. This eliminates the need for numerous cables, further reducing the interference of metal in the cables on the imaging of the medical imaging system 3.

[0055] The radio frequency coil 32 generally consists of several antenna units in the coil body, an external flexible tube, and a coil connector located at the end of the flexible tube. The radio frequency coil 32 can serve as the sensing device at the very front end of the MR imaging chain. It contains multiple receiving antenna units, covering the area of ​​the patient to be scanned, receiving magnetic resonance echo signals from the patient. After front-end processing such as sensing, matching, and amplification, the signals are transmitted to the subsequent receiver 2, and finally, raw data is generated and transmitted to the reconstruction software for imaging.

[0056] It should be understood that different routing methods of the cable assemblies 11 and the placement of the notch filters 12 will also cause varying degrees of imaging interference to the medical imaging system 3. The cable assemblies 11 extend along the length direction Z of the support platform 1, and multiple notch filters 12 are provided within the support platform 1, with the multiple notch filters 12 spaced apart along the length direction Z of the support platform 1. One end of the cable assembly 11 extends outside the support platform 1 and connects to the power supply module 42 and / or the data processing device 41. This can minimize the imaging interference to the medical imaging system 3 and make the cable assemblies 11 inside the support platform 1 more organized, facilitating the synchronous movement and / or rotation of the notch filters 12 and the cable assembly 11.

[0057] Please continue to refer to this. Figure 1 Preferably, the power supply module can also be located inside the receiver 2, such as... Figure 1 The power supply module 22 is described above. This arrangement can further reduce the number of electrical wires in the support platform 1 and minimize the possibility of metal cables running through the medical imaging system 3.

[0058] Please refer to Figure 2Preferably, the medical imaging system 3 includes multiple detector modules 31, which are spaced apart circumferentially along the scanning cavity. This arrangement allows the patient support device to pre-determine the approximate area of ​​the region of interest 45 based on previous reports (e.g., CT, MR, ultrasound, or patient medical records) or preliminary diagnosis when the patient is lying on the support platform 1 for scanning. The drive device 43 then moves and / or rotates the notch filter 12 along with the cable assembly 11 until the center point of the region of interest 45 lies on the straight line along which the data transmission cable and electrical conductors in the cable assembly 11 are arranged. Under this condition, the centroid of the notch filter 12 is as far away as possible from the center point of the region of interest 45 within the cavity. Further operation can be performed to ensure that a ray originating from the center point of the region of interest 45 and passing through the centroid of the notch filter 12 does not intersect the detector modules 31, even if the axis of the notch filter's cross-section extends into the gap between any two adjacent detector modules 31. With this configuration, photons still affected by the notch filter 12 and the cable assembly 11 will rarely hit the detector module 31, thereby further reducing the imaging interference of the cable assembly 11 and the notch filter 12 on the medical imaging system 3.

[0059] The present invention also provides an imaging method applied to any of the above-mentioned patient support devices, the method comprising the following steps:

[0060] Obtain the location information of the region of interest in the part of the object to be scanned;

[0061] Based on the location information of the region of interest, obtain the location information of the geometric center point of the region of interest;

[0062] Based on the position information of the geometric center point of the region of interest, the notch filter 12 is controlled to move and / or rotate within the support platform 1;

[0063] The medical imaging system 3 is activated to scan and image the area to be scanned of the object to be examined.

[0064] Since the method is applied to any of the patient support devices described above, it can minimize image interference with the medical imaging system 3 and includes all the advantages of the patient support device, which will not be elaborated here.

[0065] Please refer to Figure 2 In one exemplary embodiment, the region of interest is the region of interest 45. For details, please refer to [link / reference needed]. Figure 4 , Figure 4 This is a schematic flowchart of an imaging method provided in an embodiment of the present invention. Figure 4 As shown, it should be understood that the centroid of the notch filter 12 is located as far away as possible from the geometric center of the region of interest 45 in the support platform 1 in order to minimize interference.

[0066] Please refer to Figure 2 and Figure 4 Preferably, the medical imaging system 3 includes multiple detector modules 31 connected end-to-end to form a ring-shaped detector module array. The notch filter 12 is controlled to move along the width direction X1 of the support platform 1 and / or rotate around the length direction Z of the support platform 1, such that the length direction X2 of the notch filter 12's cross-section extends along the line connecting the geometric center point of the region of interest 45 and the geometric center point of the notch filter 12. That is, the notch filter 12 is controlled to move along the width direction of the support platform and / or rotate around the length direction Z of the support platform 1, such that the axis of the length direction X2 of the notch filter 12's cross-section coincides with the line connecting the geometric center point of the region of interest and the geometric center point of the notch filter 12. Simultaneously, the length direction X2 of the notch filter 12's cross-section should not intersect with the detector modules 31; that is, the axis of the length direction X2 of the notch filter 12's cross-section should be located in the gap between any two adjacent detector modules 31.

[0067] In this way, photons still affected by the notch filter 12 and the cable assembly 11 will hit the detector module 31 very rarely, thereby further reducing the imaging interference of the cable assembly 11 and the notch filter 12 on the medical imaging system 3.

[0068] To achieve the above objectives, the present invention also provides a medical imaging device, please refer to... Figure 5 The diagram illustrates a block structure of the control module of a medical imaging device according to an embodiment of the present invention.

[0069] like Figure 5 As shown, it includes:

[0070] The first acquisition module 100 is configured to acquire the location information of the region of interest 45 of the examination object located on the support table 1 of the patient support device described in any of the above-mentioned embodiments.

[0071] The first processing module 101 is configured to obtain the position information of the geometric center point of the region of interest 45 based on the position information of the region of interest 45.

[0072] The first control module 111 is configured to control the notch filter 12 to move along the width direction X1 of the support platform 1 and / or rotate around the length direction Z of the support platform 1 according to the position information of the geometric center point of the region of interest 45, so that the axis of the cross-section of the notch filter 12 in the length direction X2 coincides with the line connecting the geometric center point of the region of interest 45 and the geometric center point of the notch filter 12; and

[0073] The second control module 112 is configured to control the support platform 1 to enter the scanning cavity of the medical imaging system 3, and to start the medical imaging system 3 to scan and image the part of the object to be examined.

[0074] Since the medical imaging device provided by this invention belongs to the same inventive concept as the imaging method described above, the medical imaging device provided by this invention has all the advantages of the medical device imaging method described above. Therefore, the beneficial effects of the medical imaging device provided by this invention will not be described in detail here. It should be understood that the medical imaging device may also include a display module (not shown in the figure), which is used to display the operation interface and imaging information. It should also be understood that, as Figure 1 The central control unit 44 and data processing unit 41 shown may include the medical imaging device to implement the imaging method.

[0075] The medical imaging device should also include a communication interface and a communication bus, wherein the communication interface and the memory communicate with each other via the communication bus. The communication bus can be a Peripheral Component Interconnect (PCI) bus or an Extended Industry Standard Architecture (EISA) bus, etc. This communication bus can be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is used in the figure, but this does not indicate that there is only one bus or one type of bus. The communication interface is used for communication between the aforementioned medical imaging device and other devices.

[0076] The memory can be used to store the computer program, and by running or executing the computer program stored in the memory, and by calling the data stored in the memory, the various functions of the medical imaging device can be realized.

[0077] The memory may include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and RAMbus dynamic RAM (RDRAM), etc.

[0078] To achieve the above objectives, the present invention also provides a readable storage medium storing a computer program, which, when executed by a processor, can implement the imaging method described above.

[0079] The readable storage medium of embodiments of the present invention can be any combination of one or more computer-readable media. The readable medium can be a computer-readable signal medium or a computer-readable storage medium. Computer-readable storage media can be, for example, but not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatuses, or devices, or any combination thereof. More specific examples (a non-exhaustive list) of computer-readable storage media include: electrical connections having one or more wires, portable computer hard disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this document, a computer-readable storage medium can be any tangible medium containing or storing a program that can be used by or in combination with an instruction execution system, apparatus, or device.

[0080] Computer-readable signal media may include data signals propagated in baseband or as part of a carrier wave, carrying computer-readable program code. Such propagated data signals may take various forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. Computer-readable signal media may also be any computer-readable medium other than computer-readable storage media, capable of transmitting, propagating, or transmitting programs for use by or in connection with an instruction execution system, apparatus, or device. The program code contained on the computer-readable medium may be transmitted using any suitable medium, including but not limited to wireless, wireline, optical fiber, RF, etc., or any suitable combination thereof.

[0081] This invention also provides a medical imaging system, please refer to [reference needed]. Figure 6 and Figure 7 , Figure 6 This is a cross-sectional view of a medical imaging system provided in an embodiment of the present invention; Figure 7 This is a front view of a medical imaging system provided according to an embodiment of the present invention; the medical imaging system includes: a first imaging device 301, and a second imaging device 302.

[0082] and,

[0083] The patient support device described in any of the preceding claims, or the medical imaging device described in the preceding claims;

[0084] The isocenter of the first imaging device 301 is coaxial with the isocenter of the second imaging device 302; wherein the patient support device is movable along the axial direction of the scanning cavity to enter and exit the scanning cavity 30; the medical imaging device is configured to implement the imaging method described above.

[0085] Preferably, the second imaging device 302 is located radially inside the first imaging device 311. The second imaging device 302 has a hollow cylindrical detection system, which consists of one or more detection rings. The detection rings are formed by multiple detector modules 31 connected end to end and surrounding each other.

[0086] Since the medical imaging system provided by this invention and the patient support device described above belong to the same inventive concept, the medical imaging system provided by this invention has all the advantages of the patient support device described above. Therefore, the beneficial effects of the medical imaging system provided by this invention will not be described in detail here.

[0087] For details, please refer to Figures 6 to 7 ,like Figure 6 and Figure 7As shown, in an exemplary embodiment, the first imaging device 301 is an MR imaging device, including an MR main magnet 3011, an MR gradient coil 3012, and an MR volume emission coil 3013. The second imaging device 302 is a PET imaging device, including the detector module 31, which is located between the MR volume emission coil 3013 and the MR gradient coil 3012. A shielding shell can be added to the detector module 31 to shield the magnetic field from the influence of the magnetic field. Since the metal in the cable assembly 11 can interfere with the magnetic field of the MR imaging device, a notch filter 12 is provided in the cable assembly 11 to shield the magnetic field. Since the notch filter 12 can block photons generated during detection from affecting the PET imaging device, the notch filter 12 is configured to be driven by the driving device 43 to move and / or rotate within the support platform 1. The influence of the metal in the cable assembly 11 on the medical imaging system 3 is minimized by utilizing the technical principles described above. The technical effect of the present invention is best achieved in medical imaging systems where both MR imaging equipment and PET imaging equipment are present.

[0088] When the detector module 31 is installed on the MR body transmitting coil 3013, a support cylinder or support frame can be added to maintain installation stability.

[0089] Please refer to Figure 8 , Figure 8 This is a three-dimensional structural diagram of a medical imaging system provided in another embodiment of the present invention. Figure 8 As shown, Figure 8 The illustrated embodiments and Figure 6 and Figure 7 The difference in the illustrated embodiment is that, Figure 8 The first imaging device 301 and the second imaging device 302 are coaxially arranged so that the object to be inspected can be scanned and detected by the first imaging device 301 and the second imaging device 302 in sequence.

[0090] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the systems disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the descriptions are relatively simple, and relevant parts can be referred to the method section.

[0091] It should also be noted that although the present invention has been disclosed above with reference to preferred embodiments, these embodiments are not intended to limit the present invention. For any person skilled in the art, many possible variations and modifications can be made to the technical solutions of the present invention based on the disclosed technical content, or equivalent embodiments can be modified accordingly, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the present invention shall still fall within the scope of protection of the present invention.

[0092] It should also be understood that, unless otherwise specified or indicated, the terms “first,” “second,” “third,” etc., in the specification are used only to distinguish the various components, elements, and steps in the specification, and not to indicate the logical or sequential relationships between the various components, elements, and steps.

[0093] Furthermore, it should be recognized that the terminology described herein is used only to describe particular embodiments and not to limit the scope of the invention. It must be noted that the singular forms “a” and “an” used herein and in the appended claims include plural bases unless the context clearly indicates otherwise. For example, a reference to “a step” or “an apparatus” means a reference to one or more steps or apparatuses, and may include secondary steps and secondary apparatuses. All conjunctions used should be understood in the broadest sense. And the word “or” should be understood to have the definition of logical “or” rather than logical “exclusive OR”, unless the context clearly indicates otherwise. Furthermore, implementation of embodiments of the invention may include performing selected tasks manually, automatically, or in combination.

Claims

1. A patient support device, characterized in that, The system includes a support platform (1), which contains several notch filters (12), several coil interfaces (21), and a cable assembly (11). The notch filters (12) are mounted on the cable assembly (11). The cable assembly (11) is used to connect to a receiver (2) and a coil interface. The coil interface (21) is used to connect to a radio frequency coil (32) so that the radio frequency signal is received by the radio frequency coil and transmitted to the receiver via the cable assembly (11) connected to the coil interface. The notch filters (12) can be driven by a driving device to move and / or rotate within the support platform (1) so that the length direction (X2) of the cross-section of the notch filters (12) extends along the line connecting the geometric center point of the region of interest (45) of the scanned part of the object to be inspected and the geometric center point of the notch filters (12).

2. The patient support device as described in claim 1, characterized in that, The cable assembly (11) extends along the length direction (Z) of the support platform (1), and one end of the cable assembly (11) extends outside the support platform (1) and is connected to the power supply module (42) and / or the data processing device (41).

3. The patient support device as described in claim 1, characterized in that, The cable assembly (11) includes a data transmission cable and a power supply cable arranged side by side.

4. The patient support device as described in claim 1, characterized in that, The receiver (2) is also provided on the support platform (1), and the receiver (2) is located near the end of the support platform (1).

5. A medical device imaging method, applied to any one of the patient support devices according to claims 1 to 4, characterized in that, Includes the following steps: Obtain the location information of the region of interest in the part of the object to be scanned; Based on the location information of the region of interest, obtain the location information of the geometric center point of the region of interest; Based on the position information of the geometric center point of the region of interest, the notch filter (12) is controlled to move and / or rotate within the support platform (1) until the length direction (X2) of the cross-section of the notch filter (12) extends along the line connecting the geometric center point of the region of interest (45) and the geometric center point of the notch filter (12); the medical imaging system (3) is activated to scan and image the part of the object to be examined.

6. The imaging method as described in claim 5, characterized in that, The medical imaging system (3) is provided with multiple detector modules (31), which are connected end to end to form a ring-shaped detector module array. The imaging method further includes: controlling the notch filter (12) to move and / or rotate within the support platform (1) such that the axis of the length direction (X2) of the cross-section of the notch filter (12) is located in the gap between two adjacent detector modules (31).

7. The imaging method as described in claim 6, characterized in that, The notch filter (12) moves and / or rotates within the support platform (1), including: Control the notch filter (12) to move along the width direction (X1) of the support platform (1) and / or rotate around the length direction (Z) of the support platform (1) so that the axis of the length direction (X2) of the cross-section of the notch filter (12) coincides with the line connecting the geometric center point of the region of interest and the geometric center point of the notch filter (12).

8. A medical imaging device, characterized in that, include: The first acquisition module is configured to acquire the location information of the region of interest (45) of the object to be inspected located on the support platform (1) of any one of claims 1 to 4; The first processing module is configured to obtain the position information of the geometric center point of the region of interest (45) based on the position information of the region of interest (45); The first control module is configured to control the notch filter (12) to move along the width direction (X1) of the support platform (1) and / or rotate around the length direction (Z) of the support platform (1) based on the position information of the geometric center point of the region of interest (45), so that the axis of the length direction (X2) of the cross-section of the notch filter (12) coincides with the line connecting the geometric center point of the region of interest (45) and the geometric center point of the notch filter (12); and The second control module is configured to control the support platform (1) to enter the scanning cavity (30) of the medical imaging system (3), and to start the medical imaging system (3) to scan and image the part of the object to be examined.

9. A medical imaging system, characterized in that, include: First imaging device (301), second imaging device (302). and, The patient support device according to any one of claims 1 to 4, or the medical imaging device according to claim 8; The isocenter point of the first imaging device (301) is coaxial with the isocenter point of the second imaging device (302); The patient support device is capable of moving along the axial direction of the scanning cavity (30) of the medical imaging system to enter and exit the scanning cavity (30). The medical imaging device is configured to implement the imaging method according to any one of claims 5 to 7.

10. A medical imaging system as described in claim 9, characterized in that, The second imaging device (302) is located radially inside the first imaging device (301). The second imaging device (302) has a hollow cylindrical detection system, which consists of one or more detection rings. The detection rings are formed by multiple detector modules (31) connected end to end and surrounding each other.

Images