A method, device and electronic device for detecting fault position of magnetic resonance equipment

Abstract

The present application provides a method, device and electronic device for detecting the fault position of a magnetic resonance device. The method for detecting the fault position includes: sending a start signal to the magnetic resonance device to control the start of the magnetic resonance device, and a plurality of detachable detection coils are arranged on the magnetic resonance device; determining the response time of each detachable detection coil receiving the fault signal through a data acquisition device; determining the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device. The present application determines the fault position of the magnetic resonance device through the detachable detection coil, so that the user can perform targeted maintenance on the magnetic resonance device, which reduces time consumption and ensures the fault detection rate.

Description

Technical Field

[0001] The present application relates to the technical field of magnetic resonance equipment, and in particular to a method, device and electronic equipment for detecting a fault position of a magnetic resonance equipment. Background Art

[0002] Magnetic resonance imaging equipment is a type of tomographic imaging based on magnetic resonance imaging technology. It is widely used because of its high image resolution and no ionizing radiation. Magnetic resonance imaging equipment is generally placed in a shielded room. When transmitting radio frequency pulses, the radio frequency coil located in the magnetic cavity of the magnetic resonance imaging equipment acts as a transmitting component and stores a large amount of energy. At the same time, the gradient coil used for layer selection and spatial encoding also needs to generate a rapidly switching gradient field. Therefore, when individual components inside the magnetic resonance imaging equipment are damaged, poorly contacted, or ferromagnetic materials (such as coins, nails, etc.) are sucked into the gradient coil and the radio frequency coil, the gradient coil and the magnet cavity due to long-term use of the equipment, etc., due to instantaneous discharge or potential difference, sparks (such as electric sparks) may occur during the scanning process. This situation not only affects the image quality, but if it occurs frequently and is not handled, it may further cause equipment damage or personal injury. However, since the magnetic resonance equipment forms a closed space after installation, the above-mentioned faults are usually not directly observed.

[0003] In the prior art, when an abnormality is found in the magnetic resonance images generated by the magnetic resonance equipment, such faults are generally handled by removing the outer casing and performing operations such as measuring the standing wave ratio, checking the wiring, and cleaning the magnet cavity. However, the methods in the prior art are time-consuming and non-targeted, and the fault detection rate cannot be guaranteed. Summary of the invention

[0004] In view of this, the purpose of the present application is to at least provide a method, device and electronic device for detecting the fault position of a magnetic resonance device, by which the fault position of the magnetic resonance device is determined by a detachable detection coil, so that the user can perform maintenance on the magnetic resonance device in a targeted manner, thereby reducing time consumption and ensuring the fault detection rate.

[0005] This application mainly includes the following aspects:

[0006] In a first aspect, an embodiment of the present application provides a method for detecting a fault position of a magnetic resonance device, the method comprising: sending a start signal to the magnetic resonance device to control the start of the magnetic resonance device, wherein a plurality of detachable detection coils are arranged on the magnetic resonance device; determining, by a data acquisition device, a response time of each detachable detection coil receiving the fault signal; and determining the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device.

[0007] In a possible implementation, each detachable detection coil is respectively connected to an interface of a data acquisition device via a data line, wherein the data acquisition device determines the response time of each detachable detection coil to receive a fault signal in the following manner: for each detachable detection coil, obtaining the reception time of the detachable detection coil to the fault signal; for each detachable detection coil, calculating the difference between the reception time of the detachable detection coil and a preset start time, and determining the difference as the response time of the detachable detection coil to receive the fault signal, wherein the preset start time corresponding to each detachable detection coil is the same.

[0008] In a possible embodiment, the arrangement positions of the multiple detachable detection coils on the magnetic resonance device include at least one of the following items: located on the covering shell of the accommodating cavity of the magnetic resonance device, located on the main magnet shell of the magnetic resonance device, and / or each detachable detection coil is made of non-magnetic metal material.

[0009] In a possible implementation, the step of determining the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device includes: for each detachable detection coil, determining the calculated distance between the arrangement position of the detachable detection coil on the magnetic resonance device and the generation position of the fault signal according to the response time of the detachable detection coil receiving the fault signal; and determining the fault position of the magnetic resonance device according to the arrangement position on the magnetic resonance device corresponding to the calculated distance and the arrangement position of the detachable detection coil.

[0010] In a possible implementation, the calculated distance between each detachable detection coil and its arrangement position on the magnetic resonance device and the location where the fault signal is generated is determined in the following manner: a response time column matrix is ​​determined, wherein each element in the response time column matrix represents the response time of a corresponding detachable detection coil receiving the fault signal; a calculated distance matrix is ​​determined based on the response time column matrix and the speed of light, wherein each element in the calculated distance matrix represents the calculated distance between the arrangement position of a corresponding detachable detection coil on the magnetic resonance device and the location where the fault signal is generated; wherein the fault location of the magnetic resonance device is determined in the following manner: an arrangement position matrix is ​​determined, wherein each matrix row in the arrangement position matrix represents the arrangement position of a corresponding detachable detection coil; and the fault location is determined based on the calculated distance matrix and the arrangement position matrix.

[0011] In a possible implementation, the fault position of the magnetic resonance device is determined by the following formula:

[0012]

[0013] Where D represents the fault location, D = (x, y, z), where x represents the horizontal coordinate of the fault location, y represents the vertical coordinate of the fault location, and z represents the vertical coordinate of the fault location. T =(x,y,z) T , represents the transposition of the fault location,

[0014] W represents the layout position matrix, Among them, W i =(x i ,y i ,z i ), W i represents the arrangement position of the i-th detachable detection coil on the magnetic resonance device, x i represents the horizontal coordinate of the i-th detachable detection coil on the magnetic resonance device, y i represents the ordinate of the i-th detachable detection coil on the magnetic resonance device, z i represents the vertical coordinate of the i-th detachable detection coil on the magnetic resonance device, 3≤i≤n, n is a positive integer, and represents the total number of detachable detection coils arranged on the magnetic resonance device, represents the transposition of the arrangement position of the i-th detachable detection coil on the magnetic resonance device, c represents the speed of light, t=(t 1 ,t i ,…,t n ) T , t represents the response time column matrix, where t i It represents the response time of the i-th detachable detection coil receiving the fault signal.

[0015] In a second aspect, an embodiment of the present application further provides a fault position detection device for a magnetic resonance device, the fault position detection device comprising: a starting module, which sends a starting signal to the magnetic resonance device to control the start-up of the magnetic resonance device, and a plurality of detachable detection coils are arranged on the magnetic resonance device; an acquisition module, which determines the response time of each detachable detection coil receiving the fault signal through a data acquisition device; and a determination module, which determines the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device.

[0016] In a possible implementation, the determination module is further used to: determine the calculated distance between each detachable detection coil and the fault location based on the response time of each detachable detection coil receiving the fault signal; determine the fault location of the magnetic resonance device based on the calculated distance between each detachable detection coil and the fault location and the arrangement position of each detachable detection coil on the magnetic resonance device.

[0017] In a third aspect, an embodiment of the present application further provides an electronic device, comprising: a processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and the machine-readable instructions are executed by the processor to execute the steps of the fault position detection method of the magnetic resonance device in the above-mentioned first aspect or any possible implementation manner of the first aspect.

[0018] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of detecting the fault position of the magnetic resonance device in the above-mentioned first aspect or any possible implementation of the first aspect are performed.

[0019] The embodiment of the present application provides a method, device and electronic device for detecting the fault position of a magnetic resonance device. The method for detecting the fault position includes: sending a start signal to the magnetic resonance device to control the start of the magnetic resonance device, and multiple detachable detection coils are arranged on the magnetic resonance device; determining the response time of each detachable detection coil receiving the fault signal through a data acquisition device; determining the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device. The fault position of the magnetic resonance device is obtained by the detachable detection coil, and the fault position of the magnetic resonance device can be detected in a targeted manner, which reduces time consumption and ensures the fault detection rate.

[0020] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 A schematic diagram of the installation position of a detachable coil provided in an embodiment of the present application is shown;

[0023] Figure 2 A flow chart showing the steps of a method for detecting a fault position of a magnetic resonance device provided by an embodiment of the present application;

[0024] Figure 3 A schematic diagram of a detachable detection coil provided in an embodiment of the present application is shown;

[0025] Figure 4 A schematic structural diagram of a fault position detection device for a magnetic resonance device provided in an embodiment of the present application is shown;

[0026] Figure 5 A schematic structural diagram of an electronic device provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of explanation and description and are not used to limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn in real proportion. The flowchart used in this application shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can be implemented out of sequence, and the steps without logical context can be reversed in order or implemented simultaneously. In addition, those skilled in the art, under the guidance of the content of the present application, can add one or more other operations to the flowchart, or remove one or more operations from the flowchart.

[0028] In addition, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application claimed for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work belong to the scope of protection of the present application.

[0029] In the prior art, when abnormalities are found in the images of MRI equipment, the manufacturer's engineers usually deal with such problems by removing the MRI housing and measuring the standing wave ratio, checking the wiring, cleaning the magnet cavity, etc. However, this method is time-consuming and non-targeted, and cannot ensure the fault detection rate.

[0030] Based on this, the embodiments of the present application provide a method, device and electronic device for detecting the fault position of a magnetic resonance device, which determines the fault position of the magnetic resonance device through a detachable detection coil, so that the user can perform targeted maintenance on the magnetic resonance device, thereby reducing time consumption and ensuring the fault detection rate, as follows:

[0031] See also Figure 1 , Figure 1 FIG. 1 shows a schematic diagram of the installation position of a detachable coil provided in an embodiment of the present application. Figure 1As shown, the magnetic resonance device mainly includes a main magnet 1, a gradient coil 2 and a radio frequency coil 3, wherein the radio frequency coil 3 is placed in the gradient coil 2, and the gradient coil 2 is placed in the cavity formed by the main magnet. The entire magnetic resonance device is a closed cavity after the outer shell is installed. The magnetic resonance device is placed in a shielded room 6, and the shielded room 6 is a closed room. When the magnetic resonance device is performing scanning, the host 4 sends a control command through the spectrometer 5, and the signal generated by the magnetic resonance device is processed by the spectrometer 5 and then transmitted back to the host 4 to form an image.

[0032] In a specific embodiment of the present application, when individual components in the magnetic resonance device are damaged, have poor contact, or the device is used for a long time, causing ferromagnetic materials (such as coins, nails, etc.) to be sucked into the cavity between the gradient coil 2 and the radio frequency coil 3, or between the gradient coil 2 and the main magnet 1, etc., instantaneous discharge or potential difference will occur, causing the magnetic resonance device to spark (such as accompanied by electric sparks) during the scanning process. In this case, the image quality will be affected. Generally, when an abnormality is found in the scanning image of the magnetic resonance device, the fault position detection method of the present application can be used to quickly lock the fault position.

[0033] See also Figure 2 , Figure 2 A flowchart showing the steps of a method for detecting a fault position of a magnetic resonance device provided by an embodiment of the present application is shown in FIG. Figure 2 As shown, the fault location detection method is applied to the host 4, and the fault location detection method includes:

[0034] S100: Send a start signal to the magnetic resonance device to control the start of the magnetic resonance device.

[0035] Specifically, a plurality of detachable detection coils are arranged on the magnetic resonance device. Preferably, when the user observes that the magnetic resonance device fails through the scanning image of the magnetic resonance device, the detachable detection coils can be installed on the magnetic resonance device to obtain the fault location. Figure 3 , shows a schematic diagram of a detachable detection coil provided in an embodiment of the present application, such as Figure 3 As shown, the detachable detection coil 7 consists of a coil part 71 and a lead wire part 72, wherein the coil part 71 is a circular copper ring, and each detachable detection coil 7 is made of a non-magnetic metal material. One end of the lead wire part 72 of the detachable detection coil 7 is connected to the coil part 71, and the other end of the lead wire part 72 is connected to one end of the data line. The detachable detection coil 7 can receive a fault signal sent by the position.

[0036] In a preferred embodiment, the arrangement positions of the plurality of detachable detection coils on the magnetic resonance device include at least one of the following items: located on the cover shell of the accommodating cavity of the magnetic resonance device, located on the main magnet shell of the magnetic resonance device, located on the cover shell of the accommodating cavity of the magnetic resonance device, that is, on the cover shell of the radio frequency coil 3, such as Figure 1 As shown, this is an arrangement of multiple detachable detection coils 7. The size and receiving efficiency of each detachable detection coil 7 are kept consistent as much as possible, and the size of the detachable detection coil 7 is generally not too large. The number of detachable detection coils 7 is greater than 3. Specifically, the number, size and shape of the detachable detection coils 7 can be selected according to actual conditions. The present application does not impose specific restrictions on the shape of the detachable detection coil 7.

[0037] return Figure 2 , S200, determining the response time of each detachable detection coil receiving the fault signal through the data acquisition device.

[0038] Specifically, each detachable detection coil is connected to the interface of the data acquisition device through a data line, that is, the detachable detection coil can transmit the received signal to the data acquisition device through the data line. The type of the data acquisition device can be an onboard acquisition card, a plug-and-play acquisition card, etc. The detachable detection coil is connected to the SMB interface or other interface on the data acquisition device through the data line. The sampling rate of the data acquisition device needs to reach 1GS / S. The number of detachable detection coils is usually limited by the number of interfaces of the data acquisition device, such as Figure 1 As shown, the data acquisition device 8 can be installed on the host.

[0039] In a preferred embodiment, the data acquisition device determines the response time of each detachable detection coil receiving the fault signal by:

[0040] For each detachable detection coil, the reception time of the detachable detection coil to the fault signal is obtained, and for each detachable detection coil, the difference between the reception time of the detachable detection coil and the preset start time is calculated, and the difference is determined as the response time of the detachable detection coil to receive the fault signal.

[0041] In a specific embodiment, when the magnetic resonance device is started, a fault signal will be generated at the fault position of the magnetic resonance device. The generated fault signal will propagate to each detachable detection coil arranged on the magnetic resonance device at a speed close to the speed of light. After each detachable detection coil receives the fault signal, it will send the fault signal to the data acquisition device through the data line. The data acquisition device will immediately obtain the reception time of each detachable detection coil receiving the fault signal. Each interface of the data acquisition device has a preset start time, and the preset start time corresponding to each interface is the same, that is, the preset start time corresponding to each detachable detection coil is the same. For each detachable detection coil, the difference between the reception time of the detachable detection coil and the preset start time is the response time of the detachable detection coil receiving the fault signal.

[0042] return Figure 2 S300: Determine the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device.

[0043] In a preferred embodiment, the step of determining the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device comprises:

[0044] For each detachable detection coil, a calculated distance between a placement position of the detachable detection coil on the magnetic resonance device and a generation position of the fault signal is determined according to a response time of the detachable detection coil receiving the fault signal.

[0045] Specifically, the calculated distance between the arrangement position of each detachable detection coil on the magnetic resonance device and the generation position of the fault signal is determined in the following manner:

[0046] Determine a response time column matrix, wherein each element in the response time column matrix represents the response time of a corresponding detachable detection coil receiving a fault signal; determine a calculation distance matrix based on the response time column matrix and the speed of light, wherein each element in the calculation distance matrix represents the calculated distance between the arrangement position of a corresponding detachable detection coil on the magnetic resonance device and the generation position of the fault signal.

[0047] Specifically, for each detachable detection coil, the product of the speed of light and the response time corresponding to the detachable detection coil for receiving the fault signal is determined as the calculated distance between the arrangement position of the detachable detection coil on the magnetic resonance device and the generation position of the fault signal.

[0048] For each detachable detection coil, the fault position of the magnetic resonance device is determined according to the calculated distance and the arrangement position corresponding to the detachable detection coil.

[0049] In a specific embodiment, the fault location of the magnetic resonance device is determined by:

[0050] A placement position matrix is ​​determined, wherein each matrix row in the placement position matrix represents a placement position of a corresponding detachable detection coil.

[0051] Specifically, a reference point can be set in advance. The reference point can be the center point of the magnet cavity of the magnetic resonance device, or it can be set according to the user's own habits. There is no specific restriction on the setting of the reference point. After setting the reference point, the layout position of each detachable detection coil relative to the reference point can be measured and obtained. The layout position of each detachable detection coil relative to the reference point can be represented by the horizontal coordinate, vertical coordinate and vertical coordinate of the detachable detection coil relative to the reference point.

[0052] The fault location is determined based on the calculated distance matrix and the layout position matrix.

[0053] In a specific embodiment, the fault location of the magnetic resonance device is determined by the following formula:

[0054]

[0055] Where D represents the fault location, D = (x, y, z), where x represents the horizontal coordinate of the fault location, y represents the vertical coordinate of the fault location, and z represents the vertical coordinate of the fault location. T =(x,y,z) T , represents the transposition of the fault location,

[0056] W represents the layout position matrix, Among them, W i =(x i ,y i ,z i ), W i represents the layout position of the i-th detachable detection coil on the magnetic resonance device, x i represents the horizontal coordinate of the i-th detachable detection coil on the magnetic resonance device, y i represents the ordinate of the i-th detachable detection coil on the magnetic resonance device, z i represents the vertical coordinate of the i-th detachable detection coil on the magnetic resonance device, 3≤i≤n, n is a positive integer, and represents the total number of detachable detection coils arranged on the magnetic resonance device, represents the transposition of the arrangement position of the i-th detachable detection coil on the magnetic resonance device, c represents the speed of light, t=(t 1 ,t i ,…,t n ) T, t represents the response time column matrix, where t i It represents the response time of the i-th detachable detection coil receiving the fault signal.

[0057] In another specific embodiment, the fault position of the magnetic resonance device may also be determined by the following formula:

[0058] DD T -2WD T +diag(WW T )=c 2 t 2

[0059] In this formula, D represents the fault location, D = (x, y, z), x represents the horizontal coordinate of the fault location, y represents the vertical coordinate of the fault location, and z represents the vertical coordinate of the fault location. T =(x,y,z) T , represents the transposition of the fault location,

[0060] W represents the layout position matrix, Among them, W i =(x i ,y i ,z i ), W i represents the layout position of the i-th detachable detection coil on the magnetic resonance device, x i represents the horizontal coordinate of the i-th detachable detection coil on the magnetic resonance device, y i represents the ordinate of the i-th detachable detection coil on the magnetic resonance device, z i represents the vertical coordinate of the i-th detachable detection coil on the magnetic resonance device, 3≤i≤n, n is a positive integer, and represents the total number of detachable detection coils arranged on the magnetic resonance device, W T represents the transposed matrix of the arrangement position matrix W, diag(WW T ) means taking WW T The main diagonal elements of the product term, c represents the speed of light, t = (t 1 ,t i ,…,t n ) T , t represents the response time row matrix, where t i It represents the response time of the i-th detachable detection coil receiving the fault signal.

[0061] Through this formula, the fault location D = (x, y, z) can be obtained, such as Figure 1As shown, the detectable range of the present application includes the entire main magnet 1, the gradient coil 2, the radio frequency coil 3 and all locations in the shielding room 6 that are connected to the magnetic resonance equipment. According to the acquired fault location, the magnetic resonance equipment can be disassembled specifically and the fault location can be repaired.

[0062] Based on the same application concept, the embodiments of the present application also provide a fault position detection device for a magnetic resonance device corresponding to the fault position detection method for a magnetic resonance device provided in the above embodiments. Since the principle of solving the problem by the device in the embodiments of the present application is similar to the fault position detection method for a magnetic resonance device in the above embodiments of the present application, the implementation of the device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0063] See also Figure 4 , Figure 4 FIG. 4 shows a schematic diagram of a structure of a fault position detection device for a magnetic resonance device provided in an embodiment of the present application. Figure 4 As shown, the fault position detection device includes:

[0064] A start module 400 sends a start signal to a magnetic resonance device to control the start of the magnetic resonance device, where a plurality of detachable detection coils are arranged;

[0065] The acquisition module 410 determines the response time of each detachable detection coil receiving the fault signal through the data acquisition device;

[0066] The determination module 420 determines the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device.

[0067] Optionally, the determination module 420 is also used to: for each detachable detection coil, determine the calculated distance between the arrangement position of the detachable detection coil on the magnetic resonance device and the location where the fault signal is generated based on the response time of the detachable detection coil receiving the fault signal; for each detachable detection coil, determine the fault location of the magnetic resonance device based on the calculated distance and arrangement position corresponding to the detachable detection coil.

[0068] Optionally, each detachable detection coil is connected to an interface of a data acquisition device via a data line, wherein the data acquisition device determines the response time of each detachable detection coil to the fault signal in the following manner: for each detachable detection coil, obtaining the reception time of the detachable detection coil to the fault signal; for each detachable detection coil, calculating the difference between the reception time of the detachable detection coil and a preset start time, and determining the difference as the response time of the detachable detection coil to the fault signal, wherein the preset start time corresponding to each detachable detection coil is the same.

[0069] Optionally, the arrangement positions of the multiple detachable detection coils on the magnetic resonance device include at least one of the following items: located on the covering shell of the accommodating cavity of the magnetic resonance device, located on the main magnet shell of the magnetic resonance device, and / or each detachable detection coil is made of non-magnetic metal material.

[0070] Optionally, the determination module 420 is also used to: for each detachable detection coil, determine the calculated distance between the arrangement position of the detachable detection coil on the magnetic resonance device and the location where the fault signal is generated based on the response time of the detachable detection coil receiving the fault signal; for each detachable detection coil, determine the fault location of the magnetic resonance device based on the calculated distance and arrangement position corresponding to the detachable detection coil.

[0071] Optionally, the determination module 420 is also used to: determine a response time column matrix, each element in the response time column matrix represents the response time of a corresponding detachable detection coil receiving a fault signal; determine a calculated distance matrix based on the response time column matrix and the speed of light, each element in the calculated distance matrix represents the calculated distance between the layout position of a corresponding detachable detection coil on the magnetic resonance device and the generation position of the fault signal; determine a layout position matrix, each matrix row in the layout position matrix represents the layout position of a corresponding detachable detection coil; determine the fault position based on the calculated distance matrix and the layout position matrix.

[0072] Optionally, the determination module 420 is further configured to determine the fault position of the magnetic resonance device by using the following formula:

[0073]

[0074] Where D represents the fault location, D = (x, y, z), where x represents the horizontal coordinate of the fault location, y represents the vertical coordinate of the fault location, and z represents the vertical coordinate of the fault location. T =(x,y,z) T , represents the transposition of the fault location,

[0075] W represents the layout position matrix, Among them, W i =(x i ,y i ,z i ), W i represents the arrangement position of the i-th detachable detection coil on the magnetic resonance device, x i represents the horizontal coordinate of the i-th detachable detection coil on the magnetic resonance device, y i represents the ordinate of the i-th detachable detection coil on the magnetic resonance device, z irepresents the vertical coordinate of the i-th detachable detection coil on the magnetic resonance device, 3≤i≤n, n is a positive integer, and represents the total number of detachable detection coils arranged on the magnetic resonance device, represents the transposition of the arrangement position of the i-th detachable detection coil on the magnetic resonance device, c represents the speed of light, t=(t 1 ,t i ,…,t n ) T , t represents the response time column matrix, where t i It represents the response time of the i-th detachable detection coil receiving the fault signal.

[0076] Based on the same application concept, see Figure 5 As shown, it is a structural schematic diagram of an electronic device 500 provided in an embodiment of the present application, including: a processor 510, a memory 520 and a bus 530, the memory 520 stores machine-readable instructions executable by the processor 510, when the electronic device 500 is running, the processor 510 and the memory 520 communicate through the bus 530, and the machine-readable instructions are executed by the processor 510 when running to perform the steps of the fault position detection method of the magnetic resonance device as described in any of the above embodiments.

[0077] Based on the same application concept, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored. When the computer program is executed by a processor, the steps of the fault position detection method of the magnetic resonance device provided in the above embodiment are executed.

[0078] Specifically, the storage medium can be a general storage medium, such as a mobile disk, a hard disk, etc. When the computer program on the storage medium is executed, the above-mentioned fault position detection method of the magnetic resonance device can be executed.

[0079] Those skilled in the art can clearly understand that, for the convenience and simplicity of description, the specific working process of the system and device described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. In the several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some communication interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0080] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0081] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0082] If the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art or the part of the technical solution, can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0083] The above are only specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A method for detecting a fault position of a magnetic resonance device, It is characterized in that The fault location detection method comprises: Sending a start signal to the magnetic resonance device to control the start of the magnetic resonance device, wherein a plurality of detachable detection coils are arranged on the magnetic resonance device; Determine the response time of each detachable detection coil receiving the fault signal by means of a data acquisition device; Determining the fault position of the magnetic resonance device according to the response time of each detachable detection coil receiving the fault signal and the arrangement position of each detachable detection coil on the magnetic resonance device, comprising: For each detachable detection coil, determining a calculated distance between a placement position of the detachable detection coil on the magnetic resonance device and a generation position of the fault signal according to a response time of the detachable detection coil receiving the fault signal; For each detachable detection coil, determining a fault location of the magnetic resonance device according to a calculated distance and an arrangement position corresponding to the detachable detection coil; The calculated distance between the arrangement position of each detachable detection coil on the magnetic resonance device and the generation position of the fault signal is determined by: Determine a response time column matrix, each element in the response time column matrix represents the response time of a corresponding detachable detection coil receiving the fault signal; Determine a calculated distance matrix according to the response time column matrix and the speed of light, wherein each element in the calculated distance matrix represents a calculated distance between a corresponding arrangement position of a detachable detection coil on the magnetic resonance device and a generation position of the fault signal; Wherein, the fault location of the magnetic resonance device is determined by: Determine an arrangement position matrix, wherein each matrix row in the arrangement position matrix represents the arrangement position of a corresponding detachable detection coil; Determining a fault location according to the calculated distance matrix and the arrangement position matrix; The fault position of the magnetic resonance device is determined by the following formula: Where D represents the fault location, D = (x, y, z), where x represents the horizontal coordinate of the fault location, y represents the vertical coordinate of the fault location, and z represents the vertical coordinate of the fault location. T =(x,y,z) T , represents the transposition of the fault location, W represents the layout position matrix, Among them, W i =(x i ,y i ,z i ), W i represents the arrangement position of the i-th detachable detection coil on the magnetic resonance device, x i represents the horizontal coordinate of the i-th detachable detection coil on the magnetic resonance device, y i represents the ordinate of the i-th detachable detection coil on the magnetic resonance device, z i represents the vertical coordinate of the i-th detachable detection coil on the magnetic resonance device, 3≤i≤n, n is a positive integer, and represents the total number of detachable detection coils arranged on the magnetic resonance device, represents the transposition of the arrangement position of the i-th detachable detection coil on the magnetic resonance device, c represents the speed of light, t=(t 1 ,t i ,…,t n ) T , t represents the response time column matrix, where t i It represents the response time of the i-th detachable detection coil receiving the fault signal.

2. The fault location detection method according to claim 1, It is characterized in that Each detachable detection coil is connected to the interface of the data acquisition device through a data line. The data acquisition device determines the response time of each detachable detection coil receiving the fault signal in the following manner: For each detachable detection coil, obtaining the time at which the detachable detection coil receives the fault signal; For each detachable detection coil, the difference between the receiving time of the detachable detection coil and the preset start time is calculated, and the difference is determined as the response time of the detachable detection coil receiving the fault signal, wherein the preset start time corresponding to each detachable detection coil is the same.

3. The fault location detection method according to claim 2, It is characterized in that The arrangement positions of the plurality of detachable detection coils on the magnetic resonance device include at least one of the following items: Located on the cover shell of the accommodating chamber of the magnetic resonance device, located on the main magnet shell of the magnetic resonance device, And / or, each detachable detection coil is made of a non-magnetic metal material.

4. A fault position detection device for a magnetic resonance device, It is characterized in that The fault position detection device comprises: A starting module, which sends a starting signal to the magnetic resonance device to control the starting of the magnetic resonance device, wherein a plurality of detachable detection coils are arranged on the magnetic resonance device; The acquisition module determines the response time of each detachable detection coil receiving the fault signal through the data acquisition device; A determination module, which determines a fault position of the magnetic resonance device according to a response time of each detachable detection coil receiving the fault signal and an arrangement position of each detachable detection coil on the magnetic resonance device; Wherein, the determining module is also used for: For each detachable detection coil, determining a calculated distance between a placement position of the detachable detection coil on the magnetic resonance device and a generation position of the fault signal according to a response time of the detachable detection coil receiving the fault signal; For each detachable detection coil, determining a fault location of the magnetic resonance device according to a calculated distance and an arrangement position corresponding to the detachable detection coil; The calculated distance between the arrangement position of each detachable detection coil on the magnetic resonance device and the generation position of the fault signal is determined by: Determine a response time column matrix, each element in the response time column matrix represents the response time of a corresponding detachable detection coil receiving the fault signal; Determine a calculated distance matrix according to the response time column matrix and the speed of light, wherein each element in the calculated distance matrix represents a calculated distance between a corresponding arrangement position of a detachable detection coil on the magnetic resonance device and a generation position of the fault signal; The fault location of the magnetic resonance system is determined by: Determine an arrangement position matrix, wherein each matrix row in the arrangement position matrix represents the arrangement position of a corresponding detachable detection coil; Determining a fault location according to the calculated distance matrix and the arrangement position matrix; The fault position of the magnetic resonance device is determined by the following formula: Where D represents the fault location, D = (x, y, z), where x represents the horizontal coordinate of the fault location, y represents the vertical coordinate of the fault location, and z represents the vertical coordinate of the fault location. T =(x,y,z) T , represents the transposition of the fault location, W represents the layout position matrix, Among them, W i =(x i ,y i ,z i ), W i represents the arrangement position of the i-th detachable detection coil on the magnetic resonance device, x i represents the horizontal coordinate of the i-th detachable detection coil on the magnetic resonance device, y i represents the ordinate of the i-th detachable detection coil on the magnetic resonance device, z i represents the vertical coordinate of the i-th detachable detection coil on the magnetic resonance device, 3≤i≤n, n is a positive integer, and represents the total number of detachable detection coils arranged on the magnetic resonance device, represents the transposition of the arrangement position of the i-th detachable detection coil on the magnetic resonance device, c represents the speed of light, t=(t 1 ,t i ,…,t n ) T , t represents the response time column matrix, where t i It represents the response time of the i-th detachable detection coil receiving the fault signal.

5. An electronic device, It is characterized in that include: A processor, a memory and a bus, wherein the memory stores machine-readable instructions executable by the processor, and when the electronic device is running, the processor and the memory communicate via the bus, and when the machine-readable instructions are run by the processor, the steps of the method for detecting the fault position of a magnetic resonance device as described in any one of claims 1 to 3 are executed.

6. A computer-readable storage medium, It is characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method for detecting a fault position of a magnetic resonance device according to any one of claims 1 to 3 are executed.

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