Ultrasonic radio frequency signal equalization method, device, equipment and medium

Abstract

The invention discloses an ultrasonic radio frequency signal equalization method, device and equipment and a medium. The method comprises the following steps: when an equalizer module only comprises a first-stage equalizer, determining a frequency spectrum mean value of a plurality of first ultrasonic radio frequency signals generated by a current transducer; and adjusting parameters of the primary equalizer according to a comparison result of the spectrum mean value and a pre-stored first reference signal spectrum. According to the embodiment of the invention, personalized parameter adjustment can be carried out on the equalizer modules corresponding to different transducers based on the same reference ultrasonic radio-frequency signal, so that the ultrasonic image corresponding to the ultrasonic radio-frequency signal subjected to equalization processing by the corresponding equalizer module is more accurate. The ultrasonic images corresponding to the reference ultrasonic radio frequency signals have high consistency in visual effect.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an ultrasonic radio frequency signal equalization method, device, equipment and medium. Background Art

[0002] Intravascular ultrasound (IVUS) is an intravascular imaging modality that can be used in various interventional disciplines to characterize lesion morphology, quantify plaque burden, guide device size selection, evaluate device implantation, and identify complications.

[0003] Since the probe has a small diameter, a single transducer is usually used. In the prior art, there are still differences in the images output by different intravascular ultrasound imaging devices, which cause great trouble to clinical disease diagnosing personnel. Summary of the invention

[0004] The present invention provides an ultrasonic radio frequency signal equalization method, device, equipment and medium. By performing personalized parameter adjustment for equalizer modules corresponding to different transducers, an ultrasonic image corresponding to an ultrasonic radio frequency signal equalized by the corresponding equalizer module has a high consistency in visual effect with an ultrasonic image corresponding to a reference ultrasonic radio frequency signal.

[0005] According to one aspect of the present invention, there is provided an ultrasonic radio frequency signal equalization method, comprising:

[0006] When the equalizer module includes only a first-level equalizer, determining a frequency spectrum mean of a plurality of first ultrasonic radio frequency signals generated by the current transducer;

[0007] According to the comparison result between the spectrum mean and the pre-stored first reference signal spectrum, the parameters of the primary equalizer are adjusted.

[0008] According to another aspect of the present invention, there is provided an ultrasonic radio frequency signal equalization device, characterized in that it comprises:

[0009] An average value module, used for determining the frequency spectrum average value of a plurality of first ultrasonic radio frequency signals generated by the current transducer when the equalizer module includes only a primary equalizer;

[0010] The first parameter adjustment module is used to adjust the parameters of the primary equalizer according to the comparison result between the spectrum mean and the pre-stored first reference signal spectrum.

[0011] According to another aspect of the present invention, there is provided an information processing device, comprising:

[0012] at least one processor; and

[0013] a memory communicatively connected to the at least one processor; wherein,

[0014] The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can perform the ultrasonic radio frequency signal equalization method described in any embodiment.

[0015] According to another aspect of the present invention, there is provided an ultrasonic imaging device, comprising:

[0016] Ultrasound catheter;

[0017] A signal generator, arranged at the input end of the ultrasonic catheter, for outputting a pulse signal;

[0018] a data acquisition device, including an equalizer module, disposed at the other end of the ultrasonic catheter, for determining echo data of the target object based on the pulse signal;

[0019] A motion control device, used for controlling the ultrasonic catheter to drive the data acquisition device to move;

[0020] The information processing device described in any embodiment is further used to determine the ultrasonic image corresponding to the echo data.

[0021] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the ultrasonic radio frequency signal equalization method described in any embodiment of the present invention when executed.

[0022] According to the technical solution of the ultrasonic RF signal equalization method provided in the embodiment of the present invention, since the first reference signal spectrum is the spectrum of the reference ultrasonic RF signal output by the reference transducer, the parameters of the first-level equalizer are adjusted based on the comparison result of the spectrum characteristics of multiple first ultrasonic RF signals output by the current transducer and the pre-stored first reference signal spectrum. The spectrum of the ultrasonic RF signal equalized by the first-level equalizer after the parameter adjustment is close to the spectrum of the first reference signal, so that the ultrasonic image corresponding to the ultrasonic RF signal equalized by the first-level equalizer after the parameter adjustment is consistent with the overall visual effect of the ultrasonic image corresponding to the reference ultrasonic RF signal, thereby reducing the difference in image performance between different imaging components, reducing the difficulty of reading ultrasonic images, and improving the accuracy of disease diagnosis.

[0023] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0025] Figure 1 is a flow chart of an ultrasonic radio frequency signal equalization method provided in an embodiment of the present invention;

[0026] Figure 2 is another flow chart of an ultrasonic radio frequency signal equalization method provided according to an embodiment of the present invention;

[0027] Figure 3A is a schematic diagram of the structure of an ultrasonic radio frequency signal equalization device provided according to an embodiment of the present invention;

[0028] Figure 3B is another structural schematic diagram of an ultrasonic radio frequency signal equalization device provided according to an embodiment of the present invention;

[0029] Figure 4 is a schematic diagram of the structure of an information processing device provided according to an embodiment of the present invention;

[0030] Figure 5 Schematic diagram of the structure of an ultrasonic imaging device provided according to an embodiment of the present invention. DETAILED DESCRIPTION

[0031] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0032] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0033] Figure 1 The flowchart of the ultrasonic RF signal equalization method provided in the embodiment of the present invention is applicable to the case where the personalized adjustment of the equalizer module parameters is completed by introducing the reference signal spectrum. The method can be executed by an ultrasonic RF signal equalization device. The ultrasonic RF signal equalization device can be implemented in the form of hardware and / or software. The ultrasonic RF signal equalization device can be configured in the processor of the ultrasonic imaging device, or in a special parameter adjustment device. This embodiment takes the ultrasonic RF signal equalization device configured in the processor of the ultrasonic imaging device as an example to illustrate the technical solution. Figure 1 As shown, the method includes:

[0034] S110: When the equalizer module includes only a first-level equalizer, determine a frequency spectrum mean of a plurality of first ultrasonic radio frequency signals generated by the current transducer.

[0035] Ultrasonic radio frequency signal is the data obtained after ultrasonic echo is converted from digital to analog.

[0036] The equalizer module can be built into the transducer and arranged after the digital-to-analog conversion module of the transducer; it can also be independently arranged outside the transducer and connected to the output end of the transducer.

[0037] The equalizer module may include only a primary equalizer, or may include both a primary equalizer and a secondary equalizer.

[0038] Since the parameter adjustment methods of the first-level equalizer and the second-level equalizer are different, in response to the parameter adjustment instruction, the number of equalizer levels included in the equalizer module is determined; if the equalizer only includes a first-level equalizer, the above S110 is executed; if the equalizer includes a first-level equalizer and a second-level equalizer, the parameters of the second-level equalizer are adjusted according to the method described in the following embodiments.

[0039] Among them, the multiple first ultrasonic radio frequency signals can be a continuous multiple first ultrasonic radio frequency signals, or a discontinuous multiple first ultrasonic radio frequency signals. The multiple first ultrasonic radio frequency signals can be two first ultrasonic radio frequency signals, five first ultrasonic radio frequency signals, or other numbers of first ultrasonic radio frequency signals. It can be understood that the specific value can be determined by experiment, and this embodiment does not make a specific limitation here.

[0040] Compared with the spectrum of a single first ultrasonic radio frequency signal, the average of the spectrums of a plurality of first ultrasonic radio frequency signals can better reflect the spectrum characteristics of the ultrasonic radio frequency signal currently output by the transducer.

[0041] S120: Adjust parameters of the primary equalizer according to a comparison result between the spectrum mean and a pre-stored spectrum of the first reference signal.

[0042] The first reference signal spectrum is a spectrum of a reference ultrasonic radio frequency signal output by a reference transducer, and the spectrum of the reference ultrasonic radio frequency signal is a spectrum of an ultrasonic radio frequency signal output by the transducer based on user expectations.

[0043] Since the mean value can well reflect the spectrum characteristics of the ultrasonic RF signal output by the current transducer, the spectrum of the first reference signal can reflect the spectrum characteristics of the reference ultrasonic RF signal output by the reference transducer. Therefore, the spectrum of the first reference signal is used as a reference, and the parameter adjustment of the first-level equalizer is completed according to the comparison results of the two. The spectrum of the ultrasonic RF signal processed by the first-level equalizer after parameter adjustment is highly consistent with the spectrum of the first reference signal. When the spectra of the two ultrasonic RF signals are highly consistent, the visual effects of the ultrasonic images corresponding to the two highly consistent ultrasonic RF signals are also highly consistent.

[0044] It should be noted that the high consistency in this embodiment can be understood as there is no obvious difference in visual effect, or the relative error between the two is within the set allowable error range.

[0045] In one embodiment, multiple first ultrasonic RF signals generated by the current transducer are determined by the following steps, including: preprocessing multiple initial ultrasonic RF signals generated by the current transducer to obtain multiple first ultrasonic RF signals; the preprocessing includes bandpass filtering and / or time gain compensation. This embodiment completes noise removal and / or time gain compensation in the first ultrasonic RF signal through preprocessing, which helps to improve the accuracy of the mean spectrum. It should be noted that the existing bandpass filtering method and time gain compensation method can be used to complete the filtering and time gain compensation of the initial ultrasonic RF signal, and this embodiment will not be repeated here.

[0046] According to the technical solution of the ultrasonic RF signal equalization method provided in the embodiment of the present invention, since the first reference signal spectrum is the spectrum of the reference ultrasonic RF signal output by the reference transducer, the parameters of the first-level equalizer are adjusted based on the comparison result of the spectrum mean of multiple first ultrasonic RF signals output by the current transducer and the pre-stored first reference signal spectrum, and the spectrum of the ultrasonic RF signal equalized by the first-level equalizer after the parameter adjustment is close to the spectrum of the first reference signal, so that the ultrasonic image corresponding to the ultrasonic RF signal equalized by the first-level equalizer after the parameter adjustment is consistent with the overall visual effect of the ultrasonic image corresponding to the reference ultrasonic RF signal, thereby reducing the differences in image performance between different imaging components, reducing the difficulty of reading ultrasonic images, and improving the accuracy of disease diagnosis.

[0047] Figure 2 This is another flow chart of the ultrasonic radio frequency signal equalization method provided by an embodiment of the present invention. This embodiment adds a step of adjusting the parameters of the secondary equalizer on the basis of the previous embodiment. Figure 2 As shown, the method includes:

[0048] S2101: When the equalizer module includes only a first-level equalizer, determine a frequency spectrum mean of a plurality of first ultrasonic radio frequency signals generated by a current transducer.

[0049] S2102: Adjust parameters of a primary equalizer according to a comparison result between a spectrum mean and a pre-stored spectrum of a first reference signal.

[0050] S2201: When the equalizer module further includes a secondary equalizer, the primary equalizer after parameter adjustment performs equalization processing on part or all of the plurality of first ultrasonic radio frequency signals to obtain at least one second ultrasonic radio frequency signal.

[0051] The first-level equalizer after parameter adjustment is used to perform equalization processing on part or all of the first ultrasonic radio frequency signals of the plurality of first ultrasonic radio frequency signals to obtain second ultrasonic radio frequency signals respectively corresponding to each of the first ultrasonic radio frequency signals in the part or all of the first ultrasonic radio frequency signals, wherein the spectrum characteristics of each second ultrasonic radio frequency signal are the same as or highly consistent with the spectrum characteristics of the spectrum of the first reference signal.

[0052] S2202: Extract a region of interest signal from each second ultrasonic radio frequency signal in the at least one second ultrasonic radio frequency signal.

[0053] In this embodiment, an extraction model may be optionally used to extract a region of interest signal from each second ultrasonic RF signal in at least one second ultrasonic RF signal to obtain a region of interest signal corresponding to each second ultrasonic RF signal, and the mean value of the ultrasonic RF signal corresponding to each training sample used in the extraction model training process is the reference ultrasonic RF signal.

[0054] The extraction model is trained based on a set number of training samples, the training samples include expected ultrasonic radio frequency signals and region of interest signals corresponding to each expected ultrasonic radio frequency signal, and the first reference ultrasonic radio frequency signal is the average of the expected ultrasonic radio frequency signals in all training samples. The extraction model can be a neural network model, etc., and this embodiment does not specifically limit its structure type.

[0055] The region of interest may be a region including abnormal information, such as a plaque region, a stenosis region, etc. in an intravascular ultrasound image.

[0056] Since the ultrasonic radio frequency signal is the data obtained after the ultrasonic echo is converted from digital to analog, it can be used to reconstruct the ultrasonic image, and the biological information it carries is consistent with the biological information carried by the ultrasonic image. Therefore, the signal corresponding to the region of interest can be extracted from the first ultrasonic radio frequency signal, that is, the above-mentioned region of interest signal.

[0057] S2203. Adjust the parameters of the secondary equalizer based on a pre-stored second reference signal spectrum and part or all of the spectra of all region of interest signals, the second reference signal spectrum corresponds to the region of interest in a reference ultrasound image, and the reference ultrasound image is determined based on a reference ultrasound radio frequency signal.

[0058] During the parameter adjustment process of the secondary equalizer: for each region of interest signal, adjust the secondary equalizer parameters based on the pre-stored second reference signal spectrum and the spectrum of the current signal of interest until the parameters of the secondary equalizer meet the set conditions, and determine that the parameter adjustment of the secondary equalizer is completed. When it is detected that all spectra of interest have been traversed, it is determined that the parameter adjustment of the secondary equalizer is completed; or, when the parameters of the secondary equalizer meet the set conditions, it is determined that the parameter adjustment of the secondary equalizer is completed. The set condition may be that the difference between the spectrum of the equalization result of the secondary equalizer for the region of interest signal and the spectrum of the second reference signal is within the allowable error range.

[0059] In one embodiment, based on the principle of minimum mean square error, the parameter adjustment of the secondary equalizer is completed according to the pre-stored second reference signal spectrum and part or all of the spectra of all region of interest signals. Specifically, for each region of interest spectrum, the parameters of the secondary equalizer are adjusted based on the pre-stored second reference signal spectrum and the current spectrum of interest, so that the secondary equalizer after the parameter adjustment performs equalization processing on the region of interest signal corresponding to the current spectrum of interest, and the mean square error between the spectrum characteristics of the obtained equalization result and the spectrum characteristics of the second reference signal spectrum is minimized. This embodiment can improve the efficiency of equalizer parameter adjustment and reduce the number of equalizer parameter conditions.

[0060] The updated equalizer module can equalize the ultrasonic RF signal generated by the ultrasonic transducer through a first-level equalizer to obtain an ultrasonic RF signal after the first equalization; then the ultrasonic RF signal after the first equalization is equalized again through a second-level equalizer to obtain a target RF signal, and the presentation effect of the target RF signal in at least the region of interest is consistent with the presentation effect of the region of interest of the target RF signal output by the reference transducer under the same scene conditions, so that the target RF signal corresponds to the region of interest of the ultrasonic image, and the visual effect of the ultrasonic RF signal output by the reference transducer corresponding to the region of interest in the ultrasonic image is consistent. In the process of disease diagnosis, the region of interest is the part of the ultrasonic image that the diagnostic personnel or the diagnostic model focuses on. Therefore, this embodiment reduces the difficulty of ultrasonic image reading for diagnostic personnel or diagnostic models by improving the consistency of the ultrasonic RF signals determined based on different transducers corresponding to the region of interest in the ultrasonic image.

[0061] In this embodiment, while ensuring that the ultrasonic image corresponding to the ultrasonic radio frequency signal equalized by the first-level equalizer and the ultrasonic image corresponding to the reference ultrasonic radio frequency signal have a high degree of consistency in visual effect, the ultrasonic radio frequency signal is further equalized so that the region of interest of the ultrasonic image corresponding to the equalization result and the region of interest of the ultrasonic image corresponding to the reference ultrasonic radio frequency signal have a high degree of consistency in visual effect.

[0062] According to the technical solution of the ultrasonic RF signal equalization method provided by the embodiment of the present invention, the second reference signal spectrum corresponds to the region of interest in the ultrasonic image corresponding to the first reference ultrasonic RF signal, and the parameters of the secondary equalizer are adjusted based on the second reference signal spectrum and part or all of all the spectra of interest; the region of interest of the ultrasonic RF signal after equalization processing by the secondary equalizer after parameter adjustment is close to the region of interest in the ultrasonic RF signal output by the reference transducer under the current scene conditions, which makes the visual effects of the ultrasonic images formed by different imaging components in the region of interest close to each other, reduces the difficulty of diagnostic personnel or diagnostic models in reading images formed by different imaging components, thereby improving the accuracy of disease diagnosis results of images formed by different imaging components.

[0063] Figure 3A A schematic diagram of the structure of an ultrasonic radio frequency signal equalization device provided in an embodiment of the present invention.

[0064] like Figure 3A As shown, the device comprises:

[0065] The mean value module 310 is used to determine the spectrum mean value of the multiple first ultrasonic radio frequency signals generated by the current transducer when the equalizer module includes only a first-level equalizer;

[0066] The first parameter adjustment module 320 is used to adjust the parameters of the primary equalizer according to the comparison result between the spectrum mean and the pre-stored first reference signal spectrum.

[0067] In one embodiment, Figure 3B As shown, the device also includes an equalization module 330, a signal extraction module 340 and a second parameter adjustment module 350;

[0068] An equalization module 330, configured to, when the equalizer module further includes a secondary equalizer, perform equalization processing on part or all of the plurality of first ultrasonic radio frequency signals by the primary equalizer after parameter adjustment to obtain at least one second ultrasonic radio frequency signal;

[0069] A signal extraction module 340, configured to extract a region of interest signal from each of the at least one second ultrasonic radio frequency signal;

[0070] The second parameter adjustment module 350 is used to adjust the parameters of the secondary equalizer based on a pre-stored second reference signal spectrum and part or all of the spectra of all the region of interest signals, wherein the second reference signal spectrum corresponds to the region of interest in a reference ultrasound image, and the reference ultrasound image is determined based on a reference ultrasound radio frequency signal.

[0071] In one embodiment, the second parameter adjustment module 350 is used to:

[0072] For each of the region of interest signals, the secondary equalizer parameters are adjusted based on the pre-stored second reference signal spectrum and the spectrum of the current region of interest signal until the parameters of the secondary equalizer meet the set conditions, and it is determined that the parameter adjustment of the secondary equalizer is completed.

[0073] In one embodiment, the second parameter adjustment module 350 is used to:

[0074] Based on the minimum mean square error principle, the parameter adjustment of the secondary equalizer is completed according to a pre-stored second reference signal spectrum and part or all of the spectrums of all the signals in the region of interest.

[0075] In one embodiment, the first equalizer module determines a plurality of first ultrasonic radio frequency signals generated by the current transducer by the following steps:

[0076] Preprocessing the multiple initial ultrasonic radio frequency signals generated by the current transducer respectively to obtain multiple first ultrasonic radio frequency signals;

[0077] The pre-processing includes band-pass filtering and / or time gain compensation.

[0078] In one embodiment, the first reference signal spectrum is a spectrum of a reference ultrasonic radio frequency signal output by a reference transducer.

[0079] The technical solution of the ultrasonic RF signal equalization method provided by the embodiment of the present invention, the technical solution of the ultrasonic RF signal equalization method provided by the embodiment of the present invention, since the first reference signal spectrum is the spectrum of the reference ultrasonic RF signal output by the reference transducer, the parameters of the first-level equalizer are adjusted based on the comparison result of the spectrum mean of multiple first ultrasonic RF signals output by the current transducer and the pre-stored first reference signal spectrum, the spectrum of the ultrasonic RF signal equalized by the first-level equalizer after the parameter adjustment is close to the first reference signal spectrum, so that the ultrasonic image corresponding to the ultrasonic RF signal equalized by the first-level equalizer after the parameter adjustment is consistent with the overall visual effect of the ultrasonic image corresponding to the reference ultrasonic RF signal, thereby reducing the differences in image performance between different imaging components, reducing the difficulty of reading ultrasonic images, and improving the accuracy of disease diagnosis.

[0080] The ultrasonic radio frequency signal equalization device provided in the embodiment of the present invention can execute the ultrasonic radio frequency signal equalization method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0081] Figure 4 A schematic diagram of the structure of an information processing device 10 that can be used to implement an embodiment of the present invention is shown. Information processing devices are intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or claimed herein.

[0082] like Figure 4 As shown, the information processing device 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the information processing device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0083] A number of components in the information processing device 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the information processing device 10 to exchange information / data with other devices through a computer network such as the Internet and / or various telecommunication networks.

[0084] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various dedicated artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs the various methods and processes described above, such as an ultrasonic radio frequency signal equalization method.

[0085] Figure 5 This is a schematic diagram of the structure of an ultrasonic imaging device provided in an embodiment of the present invention. This embodiment and the previous embodiment belong to the same inventive concept. For the parts not fully described in this embodiment, please refer to the previous embodiment. Figure 5 As shown, the ultrasonic imaging device comprises:

[0086] Ultrasonic catheter 20;

[0087] A signal generator 30, disposed at the input end of the ultrasonic catheter 20, for outputting a pulse signal;

[0088] a data acquisition device 40, including an equalizer module, and disposed at the other end of the ultrasound catheter 20, for determining echo data of the target object based on the pulse signal;

[0089] A motion control device 50, used to control the ultrasonic catheter to drive the data acquisition device 40 to move, and to collect echo data at a specified position;

[0090] The information processing device 10 described in any embodiment is further used to determine the ultrasound image corresponding to the echo data.

[0091] When using the ultrasonic imaging device of this embodiment to collect intravascular ultrasonic images, the target end provided with the data acquisition device is placed in a blood vessel at a set location, such as a limb, and then the target end of the ultrasonic catheter is controlled by the motion control device to move in the blood vessel, and the echo data at the specified position of the blood vessel is collected. The ultrasonic catheter returns the echo data to the information processing device, and the information processing device reconstructs the echo data to obtain an ultrasonic image corresponding to the specified position. In one embodiment, the ultrasonic imaging device also includes a display device, and the information processing device also outputs the ultrasonic image to the display device so that the display device displays the ultrasonic image.

[0092] The technical solution of the ultrasonic imaging device provided by the embodiment of the present invention can adjust the parameters of the equalizer module based on the reference ultrasonic radio frequency signal selected by the user, thereby improving the flexibility of the equalizer module parameter adjustment and meeting the equipment usage requirements of different users.

[0093] In some embodiments, the ultrasonic RF signal equalization method may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 427. In some embodiments, part or all of the computer program may be loaded and / or installed on the ultrasonic imaging device via the ROM 421 and / or the communication unit 428. When the computer program is loaded into the RAM 422 and executed by the processor 420, one or more steps of the ultrasonic RF signal equalization method described above may be performed. Alternatively, in other embodiments, the processor 420 may be configured to perform the ultrasonic RF signal equalization method in any other appropriate manner (e.g., by means of firmware).

[0094] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0095] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0096] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0097] To provide interaction with a user, the systems and techniques described herein may be implemented on an information processing device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and a pointing device (e.g., a mouse or trackball) through which the user can provide input to the information processing device. Other types of devices may also be used to provide interaction with the user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user may be received in any form (including acoustic input, voice input, or tactile input).

[0098] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0099] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0100] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0101] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for equalizing an ultrasonic radio frequency signal, characterized in that: include: When the equalizer module includes only a first-level equalizer, determining a frequency spectrum mean of a plurality of first ultrasonic radio frequency signals generated by the current transducer; According to the comparison result between the spectrum mean and the pre-stored first reference signal spectrum, the parameters of the primary equalizer are adjusted.

2. The method according to claim 1, characterized in that: Also includes: When the equalizer module further includes a secondary equalizer, the primary equalizer after parameter adjustment performs equalization processing on part or all of the plurality of first ultrasonic radio frequency signals to obtain at least one second ultrasonic radio frequency signal; extracting a region of interest signal from each of the at least one second ultrasonic radio frequency signal; Adjust the parameters of the secondary equalizer based on a pre-stored second reference signal spectrum and part or all of the spectra of all the region of interest signals, wherein the second reference signal spectrum corresponds to the region of interest in a reference ultrasound image, and the reference ultrasound image is determined based on a reference ultrasound radio frequency signal.

3. The method according to claim 2, characterized in that The adjusting the parameters of the secondary equalizer based on a part or all of the pre-stored second reference signal spectrum and all the spectrums of the region-of-interest signals comprises: For each of the region of interest signals, the secondary equalizer parameters are adjusted based on the pre-stored second reference signal spectrum and the spectrum of the current region of interest signal until the parameters of the secondary equalizer meet the set conditions, and it is determined that the parameter adjustment of the secondary equalizer is completed.

4. The method according to claim 2, characterized in that: Adjusting parameters of the secondary equalizer based on a pre-stored second reference signal spectrum and part or all of the spectrums of all region-of-interest signals includes: Based on the minimum mean square error principle, the parameter adjustment of the secondary equalizer is completed according to the pre-stored second reference signal spectrum and part or all of the spectrums of all the signals in the region of interest.

5. The method according to claim 1, characterized in that The steps of determining a plurality of first ultrasonic radio frequency signals generated by the current transducer include: Preprocessing the multiple initial ultrasonic radio frequency signals generated by the current transducer respectively to obtain multiple first ultrasonic radio frequency signals; The pre-processing includes band-pass filtering and / or time gain compensation.

6. The method according to claim 1, characterized in that The first reference signal spectrum is the spectrum of the reference ultrasonic radio frequency signal output by the reference transducer.

7. An ultrasonic radio frequency signal equalization device, characterized in that: include: An average value module, used for determining the frequency spectrum average value of a plurality of first ultrasonic radio frequency signals generated by the current transducer when the equalizer module includes only a primary equalizer; The first parameter adjustment module is used to adjust the parameters of the primary equalizer according to the comparison result between the spectrum mean and the pre-stored first reference signal spectrum.

8. An information processing device, characterized in that: include: at least one processor; as well as a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the ultrasonic radio frequency signal equalization method described in any one of claims 1-6.

9. An ultrasonic imaging device, characterized in that: include: Ultrasound catheter; A signal generator, arranged at the input end of the ultrasonic catheter, for outputting a pulse signal; a data acquisition device, including an equalizer module, disposed at the other end of the ultrasonic catheter, for determining echo data of the target object based on the pulse signal; A motion control device, used to control the ultrasonic catheter to drive the data acquisition device to move, and to collect echo data at a specified position; The information processing device of claim 8, wherein the information processing device is further used to determine an ultrasonic image corresponding to the echo data.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the ultrasonic radio frequency signal equalization method according to any one of claims 1 to 6 when executed.

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