Magnetic resonance physical simulation system and method for teaching

Abstract

The invention provides a magnetic resonance physical simulation system and method for teaching, and relates to the technical field of simulation, and the system comprises a magnetic resonance signal collection module which simulates magnetic resonance images collected by different sequences in real time; the magnetic resonance physical module is used for analyzing the influence of different sequences on magnetic resonance signals and displaying the change process of magnetic resonance images in real time; and the K space module is used for adjusting a plurality of parameters and real-timely changing the magnetic resonance image and the K space data of the magnetic resonance image. According to the method provided by the invention, the process simulation demonstration of how to form the magnetic resonance image by the magnetic resonance signal is realized by exploring the basic theory teaching of magnetic resonance imaging, the simulation result is visually output in real time by converting the acquired magnetic resonance signal into the curve, and meanwhile, the practical operation opportunity of a user is enhanced.

Description

Technical Field

[0001] The invention belongs to the field of simulation technology, and in particular relates to a magnetic resonance physics simulation system and method for teaching. Background Art

[0002] As one of the most complex medical imaging technologies, magnetic resonance imaging plays an important role in clinical diagnosis and treatment. Due to the complex structure of magnetic resonance imaging equipment, involving many disciplines, the key knowledge points are wide and relatively abstract, and users do not have enough knowledge in the corresponding fields, and cannot deeply understand the essence of relevant knowledge; and because the equipment is huge and expensive, it is difficult for most school teaching laboratories to be equipped with magnetic resonance imaging equipment. In the context of educational informatization, virtual simulation experiments have been widely used in teaching activities in various disciplines. Virtual simulation experiments rely on information technologies such as the Internet, multimedia, and human-computer interaction, and combine teaching content to build a simulated virtual experimental environment and experimental objects, which can enable users to carry out learning activities that are difficult to achieve in actual teaching links in an open, autonomous, and interactive environment. Therefore, the development of a virtual simulation system for magnetic resonance imaging will help users learn and virtually operate the principles of magnetic resonance imaging systems anytime and anywhere, and strengthen users' in-depth understanding of the principles and technical connotations of magnetic resonance imaging; at the same time, it can overcome the limitations of medical magnetic resonance imaging systems that are expensive, inaccessible, and indisassembled, while also avoiding the dangers of field operations and making up for the lack of practical teaching time.

[0003] In the prior art, the patent with publication number CN117576973A discloses a virtual simulation teaching system for the structure of a magnetic resonance device. Through virtual simulation technology, the three-dimensional model of the structure of the magnetic resonance device can be reconstructed and dynamic interaction can be achieved. However, it can only simulate the hardware structure of the magnetic resonance system and cannot simulate magnetic resonance imaging. In addition, the paper "Xue Feng, Pan Guihong, Zeng Renhua, et al. Research and Application of Virtual Simulation Software for Magnetic Resonance Equipment [J]. Electronic Components and Information Technology, 2023, 7(09): 30-34." also introduces principle demonstration, data acquisition, virtual imaging and other technologies into experimental teaching according to the needs of magnetic resonance practical teaching. However, the collected magnetic resonance images are not clear enough and the principle demonstration is not intuitive enough, which is not conducive to user learning.

[0004] In summary, magnetic resonance imaging is widely used in the medical and industrial fields, but magnetic resonance physics has the characteristics of complicated and profound theoretical knowledge and multidisciplinary cross-integration, which has always been the focus and difficulty of learning. With the huge demand for medical resources brought about by the localization of medical equipment and the aging of the population, my country is in urgent need of a large number of local imaging professionals, but there are many difficulties in learning magnetic resonance, such as the high price of magnetic resonance, slow imaging speed, limited practical operation opportunities for users, low learning efficiency and dangerous field operations. In order to solve the above problems, the present invention discloses a magnetic resonance teaching simulation system with rich parameter adjustment, which can quickly and visually output simulation results and can be learned anytime and anywhere. Summary of the invention

[0005] The purpose of the present invention is to provide a magnetic resonance physics simulation system and method for teaching in view of the problems existing in the prior art. The simulation system can not only simulate the magnetic resonance scanning process, build a bridge between magnetic resonance physics, magnetic resonance spatial positioning, magnetic resonance imaging and magnetic resonance post-processing, but also allow the user to change parameters and output the simulation results in real time and visually.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0007] A magnetic resonance physics simulation system for teaching, characterized by comprising:

[0008] The magnetic resonance signal acquisition module acquires magnetic resonance signals in real time by setting different sequences;

[0009] Magnetic resonance physics module, which analyzes the impact of different sequences on magnetic resonance signal imaging and displays the changes of magnetic resonance images in real time;

[0010] K-space module, which displays the changes of magnetic resonance images and their K-space data in real time;

[0011] Furthermore, the magnetic resonance signal acquisition module includes a sequence display area, a first parameter adjustment area, a first data display area, and a first image display area:

[0012] The sequence display area is used to provide a variety of optional sequences, such as SE sequence and inversion recovery sequence;

[0013] The first parameter adjustment area adjusts various magnetic resonance imaging parameters based on the selected sequence;

[0014] A first data display area displays scanned magnetic resonance data based on the results of different parameter adjustments;

[0015] The first image display area is used to display multiple images simultaneously to facilitate comparison between images.

[0016] Further, the magnetic resonance physics module includes a curve display area, a second parameter adjustment area, a ROI display area, and a second image display area:

[0017] The curve display area converts the collected magnetic resonance signals into curves and displays the corresponding image effects in real time;

[0018] The second parameter adjustment area displays different images in real time by adjusting the echo time and repetition time value;

[0019] ROI display area, used to select an unlimited number of ROIs and display the relaxation curves in the curve display area accordingly;

[0020] The second image display area is used to simultaneously display a variety of different magnetic resonance images and corresponding magnetic resonance image changes.

[0021] Furthermore, the K-space module includes a third image display area, a histogram display area, a third parameter adjustment area, and a second data display area:

[0022] The third image display area is used to simultaneously display a variety of different images, such as original images and K-space images;

[0023] The histogram display area is used to display the changes of the histogram in real time when adjusting the image window width and window position, and to display the statistical data of the image pixels;

[0024] The third parameter adjustment area is used to adjust filtering, sampling window, partial Fourier and downsampling, and the corresponding image will change;

[0025] The second data display area is used to display the magnetic resonance image and its corresponding K-space data.

[0026] A magnetic resonance physics simulation method for teaching, characterized in that it comprises the following steps:

[0027] By setting different sequences and different parameters on the interface, click the "Start Acquisition" button to simulate magnetic resonance images in real time;

[0028] Select the sequence to be analyzed, enter the echo time and repetition time values ​​in the input box to adjust them, and display the changes of the magnetic resonance image in real time;

[0029] By adjusting the parameters such as filtering, sampling window, partial Fourier and downsampling, the changes of magnetic resonance images and their K-space data can be displayed in real time.

[0030] A computer device, characterized in that the computer device includes a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the magnetic resonance physics simulation method for teaching.

[0031] A computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the processor executes the magnetic resonance physics simulation method for teaching.

[0032] Compared with the prior art, the present invention has the following beneficial effects:

[0033] 1. The present invention proposes a magnetic resonance physics simulation system and method for teaching. By setting a magnetic resonance signal acquisition module and a magnetic resonance physics module, it shows that the present invention explores the basic theoretical teaching of magnetic resonance imaging, realizes the process simulation demonstration of how magnetic resonance signals form magnetic resonance images, and makes the learning process more intuitive.

[0034] 2. The present invention proposes a magnetic resonance physics simulation system and method for teaching. By setting a K-space module, the collected magnetic resonance signals are converted into curves, which is beneficial to the user's understanding of the magnetic resonance signals. In addition, by adjusting parameters, the simulation results can be output in real time and visually. At the same time, it also solves the problem that the magnetic resonance equipment is expensive and the trainees have no practical operation opportunities. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. 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 paying creative work.

[0036] Figure 1 A module diagram of a magnetic resonance physics simulation system for teaching provided by an embodiment of the present invention;

[0037] Figure 2 A diagram of a magnetic resonance signal acquisition module of a magnetic resonance physics simulation system for teaching provided by an embodiment of the present invention;

[0038] Figure 3 A magnetic resonance physics module diagram of a magnetic resonance physics simulation system for teaching provided by an embodiment of the present invention;

[0039] Figure 4 A K-space module diagram of a magnetic resonance physics simulation system for teaching provided by an embodiment of the present invention;

[0040] Figure 5 This is an interface diagram of a magnetic resonance signal acquisition module of a magnetic resonance physics simulation system for teaching provided by an embodiment of the present invention;

[0041] Figure 6An interface diagram of a magnetic resonance physics module of a magnetic resonance physics simulation system for teaching provided by an embodiment of the present invention;

[0042] Figure 7 This is a diagram of the K-space module interface of a magnetic resonance physics simulation system for teaching provided by an embodiment of the present invention.

[0043] Among them, it should be noted that:

[0044] Figure 2 and Figure 5 Corresponding to the magnetic resonance signal acquisition module, the partitions of the module are described as: sequence display area, first parameter adjustment area, first data display area, first image display area;

[0045] Figure 3 and Figure 6 Corresponding to the magnetic resonance physics module, the partitions of this module are described as: curve display area, second parameter adjustment area, ROI display area, second image adjustment area;

[0046] Figure 4 and Figure 7 Corresponding to the K-space module, the partitions of this module are described as: a third image display area, a histogram display area, a third parameter adjustment area, and a second data display area. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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 are within the scope of protection of the present invention.

[0048] like Figure 1 As shown, the embodiment of the present invention provides a module structure of a magnetic resonance physics simulation system for teaching, including:

[0049] The magnetic resonance signal acquisition module simulates magnetic resonance images in real time by setting different sequences;

[0050] Magnetic resonance physics module, which analyzes the impact of different sequences on magnetic resonance signal imaging and displays the changes of magnetic resonance images in real time, making it convenient for users to compare and analyze;

[0051] K-space module, which displays the changes of magnetic resonance images and their K-space data in real time, helping users understand how K-space data affects the quality of the final image;

[0052] The embodiment of the present invention also provides a structure of a magnetic resonance signal acquisition module, such as Figure 2 , Figure 5 As shown, they are the structure diagram and interface diagram of the magnetic resonance signal acquisition module, including a sequence display area, a first parameter adjustment area, a first data display area and a first image display area. The sequence display area displays the sample image of the current sequence. There are a variety of sequences to choose from in the sequence display area, such as spin echo sequence and inversion recovery sequence, which can facilitate users to learn by comparing sequences; the first parameter adjustment area can adjust the parameters of magnetic resonance imaging, such as the spin echo sequence can adjust the values ​​of parameters such as echo time and repetition time, and the preferred adjustment range is 1~10000ms, such as the inversion recovery sequence can adjust the TI value, echo time value and repetition time value, and the preferred adjustment range is 1~10000ms; the first data display area is used to display the currently scanned data. Double-clicking the data display area will display the current data, and the displayed window depends on the currently activated window; the first image display area can simultaneously display 3 different magnetic resonance images for comparative learning of magnetic resonance images.

[0053] Specifically, the sequence required for scanning is selected and the magnetic resonance parameters are adjusted to perform a virtual magnetic resonance scan, and the scan data is displayed in real time in the data display area, from which a group of data is selected for display, and different parameters are adjusted to compare different magnetic resonance images, wherein the adjustment of image parameters includes image scaling, image magnification, window width and window position adjustment, image page turning, window selection, image copying and image window linkage.

[0054] The embodiment of the present invention also provides a structure of a magnetic resonance physics module, such as Figure 3 , Figure 6 As shown, they are the structure diagram and interface diagram of the magnetic resonance physics module, including the curve display area, the second parameter adjustment area, the ROI display area and the second image display area. The curve display area can form a curve of the magnetic resonance signal and display the magnetic resonance image effect in real time, which can more intuitively analyze the influence of sequence parameters on the magnetic resonance signal; the second parameter adjustment area can display different magnetic resonance images in real time by adjusting the echo time and repetition time values; the ROI display area supports an unlimited number of ROIs, and displays the relaxation curve in the curve display area accordingly, where the color of the ROI is automatically generated, and the color is consistent with the color of the curve; the image display area is used to display a variety of different magnetic resonance images in real time, as well as the corresponding magnetic resonance image changes.

[0055] Specifically, after opening the magnetic resonance physics module, the magnetic resonance signal data is automatically imported from the magnetic resonance signal acquisition module, and then several regions of interest (ROI areas) are selected to have a deeper understanding of the characteristics of the magnetic resonance signal. By adjusting the echo time and repetition time values, the relaxation curve corresponding to the ROI is displayed in real time in the second parameter display area, and the corresponding magnetic resonance image is displayed in real time in the second image display area.

[0056] Specifically, the magnetic resonance physics module can display the relaxation curve and the corresponding image changes in real time, form a curve based on the theoretical formula behind magnetic resonance, and display the image effect in real time. It can more intuitively analyze the relationship between magnetic resonance signals and magnetic resonance images, and enable users to deeply learn the theoretical knowledge of magnetic resonance physics.

[0057] The embodiment of the present invention also provides a structure of a K-space module, such as Figure 4 , Figure 7 As shown in the figure, they are the structure diagram and interface diagram of the K-space module, including the third image display area, the histogram display area, the third parameter adjustment area and the second data display area. The third image display area can display a variety of different images at the same time, such as the original image and the K-space image; when the image window width and window position are adjusted in the histogram display area, the histogram changes in real time and displays the statistical data of the image pixels; the third parameter adjustment area can adjust the parameters such as smoothing, sampling window, partial Fourier and undersampling, and the corresponding image will change; among them, the filtering parameters include mean filtering of rectangular window and Gaussian window, the filtering window size is 1~11 pixels, the sampling window includes rectangular window, circular window and rectangular inversion, etc., there are 4 modes of circular inversion, the window size is 0%~100%, the partial Fourier includes 3 modes of upper, lower and bilateral, the size is 0%~100%, the undersampling includes 3 modes of zero padding, compression and filling, and the undersampling ratio is 0%~100%; the second data display area is used to display the magnetic resonance image and its corresponding K-space data.

[0058] Specifically, the parameter adjustment in the third parameter adjustment area includes: preprocessing the image through the filtering parameters, sampling window, partial Fourier, and downsampling in the parameter bar, selecting appropriate parameters to make the image clearer and more delicate, reduce noise interference, and improve the contrast and resolution of the image; it can better present the details of the tissue structure and help accurate diagnosis; it can also make the image more stable and reduce the occurrence of artifacts.

[0059] Specifically, after opening the K-space module, data will be automatically imported from the magnetic resonance signal acquisition module. After selecting a set of data, the third image display area will display the magnetic resonance image and the corresponding K-space data. After adjusting the window width and position of the image, the image histogram will display the changes in real time. After adjusting the parameters in the third parameter adjustment area, the magnetic resonance image and K-space will display the changes in real time.

[0060] The embodiment of the present invention also provides a magnetic resonance physics simulation method for teaching, and the principle steps are as follows: the user selects the original magnetic resonance imaging data stored locally or in the cloud through the system interface, clicks the "Import" button, the system will parse the data and display basic information, selects different sequences according to the learning purpose and sets parameters, and clicks the "Start Acquisition" button. The system displays the acquired magnetic resonance signal waveform in real time; then the influence of the sequence characteristics on the imaging effect is checked from the selected sequence, and the new echo time and repetition time values ​​are input through the input box. The system will update the display in real time and reflect the image changes after the parameter adjustment, and the user can observe the influence of different parameters on the signal; then the acquired The magnetic resonance signal data is stored in the K space, and the system will automatically process and display the basic structure of the K space. The user adjusts the sampling parameters of the K space and displays it in real time in the histogram display area. At the same time, the data display area provides real-time numerical feedback, showing the current K space sampling status and signal strength. Finally, the user selects the adjusted magnetic resonance image from the processed images and clicks the "3D Reconstruction" button. The system will generate the corresponding 3D magnetic resonance image based on the selected image. The user selects the "Multi-plane Reconstruction" function, and the system will automatically generate magnetic resonance images of different sections. The physical simulation magnetic resonance images of each section can be saved through the "Output" button to facilitate subsequent user learning.

[0061] Based on the same inventive concept as the aforementioned embodiment, an embodiment of the present invention further provides a computer device, including a memory and a processor, wherein the memory is used to store computer-executable instructions, and the processor is used to execute computer-executable instructions to implement the magnetic resonance physics simulation method for teaching proposed in the aforementioned embodiment.

[0062] This embodiment also provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, it is used to implement a process simulation demonstration of how magnetic resonance physics forms a magnetic resonance image, and to establish a magnetic resonance physics simulation system for teaching. The storage medium can be any non-volatile storage device such as a hard disk, a solid-state hard disk, a flash drive, an optical disk, etc., for storing computer program codes and necessary data files, and the stored computer program includes: a magnetic resonance signal acquisition module, a magnetic resonance physics module, and a K-space module.

[0063] Finally, it should be pointed out that the above specific embodiments are only representative examples of the present invention. Obviously, the present invention is not limited to the above specific embodiments, and there are many variations. Any simple modification, equivalent changes and modifications made to the above specific embodiments based on the technical essence of the present invention should be considered to belong to the protection scope of the present invention.

Claims

1. A magnetic resonance physics simulation system for teaching, characterized in that: include: The magnetic resonance signal acquisition module simulates magnetic resonance images in real time by setting different sequences; Magnetic resonance physics module, which analyzes the impact of different parameters on magnetic resonance signal imaging and displays the changing process of magnetic resonance images in real time; K-space module displays the changes of magnetic resonance images and their K-space data in real time.

2. A magnetic resonance physics simulation system for teaching according to claim 1, characterized in that: The magnetic resonance signal acquisition module includes a sequence display area, a first parameter adjustment area, a first data display area, and a first image display area: Sequence display area, used to provide a variety of optional sequences, including SE sequence and inversion recovery sequence; The first parameter adjustment area adjusts various magnetic resonance imaging parameters based on the selected sequence; A first data display area displays scanned magnetic resonance data based on the results of different parameter adjustments; The first image display area is used to display multiple images simultaneously to facilitate comparison between images.

3. A magnetic resonance physics simulation system for teaching according to claim 1, characterized in that: The magnetic resonance physics module includes a curve display area, a second parameter adjustment area, a ROI display area, and a second image display area: The curve display area converts the collected magnetic resonance signals into curves and displays the corresponding image effects in real time; The second parameter adjustment area displays different images in real time by adjusting the echo time and repetition time value; ROI display area, used to select an unlimited number of ROIs and display the relaxation curves in the curve display area accordingly; The second image display area is used to simultaneously display a variety of different magnetic resonance images and corresponding magnetic resonance image changes.

4. A magnetic resonance physics simulation system for teaching according to claim 1, characterized in that: The K-space module includes a third image display area, a histogram display area, a third parameter adjustment area, and a second data display area: The third image display area is used to simultaneously display a variety of different images, such as original images and K-space images; The histogram display area is used to display the changes of the histogram in real time when adjusting the image window width and window position, and to display the statistical data of the image pixels; The third parameter adjustment area is used to adjust filtering, sampling window, partial Fourier and downsampling, and the corresponding image will change; The second data display area is used to display the magnetic resonance image and its corresponding K-space data.

5. A magnetic resonance physics simulation method for teaching, characterized in that: The following steps are involved: By setting different sequences and different parameters on the interface, click the "Start Acquisition" button to simulate magnetic resonance images in real time; Select the sequence to be analyzed, enter the echo time and repetition time values ​​in the input box to adjust them, and display the changes of the magnetic resonance image in real time; By adjusting the parameters such as filtering, sampling window, partial Fourier and downsampling, the changes of magnetic resonance images and their K-space data can be displayed in real time.

6. A computer device, characterized in that: The computer device includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the magnetic resonance physics simulation method for teaching as described in claim 6.

7. A computer-readable storage medium storing a computer program, wherein when the computer program is executed by a processor, the processor executes the magnetic resonance physics simulation method for teaching according to claim 6.

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