Cardiac cine magnetic resonance imaging method, apparatus, system, device, and storage medium

Abstract

The application relates to the field of cine imaging, in particular to a cine imaging method, device, system, computer equipment and storage medium, the method comprising: generating corresponding K-space data based on magnetic resonance scanning data of a heart cine; wherein the number of phases contained in the center region data of the K-space data is less than a first preset number of lines; the number of phases contained in the peripheral region data of the K-space data is greater than or equal to the first preset number of lines; and a heart cine magnetic resonance image is generated by reconstruction based on the K-space data. The application reduces the number of phases contained in the center region data of the K-space data, thereby improving the time resolution of the K-space center region.

Description

Technical Field

[0001] This application relates to the field of cinema imaging, and in particular to a method, apparatus, system, computer equipment, and storage medium for cardiac cinema magnetic resonance imaging. Background Technology

[0002] Among numerous medical imaging techniques, magnetic resonance imaging (MRI) stands out for its high soft tissue contrast, multi-parameter capabilities, and lack of blind spots, demonstrating exceptionally broad application prospects in clinical disease screening and diagnosis. Cardiac cine magnetic resonance imaging (CCMRI), in addition to its advantages of no ionizing radiation, the ability to image in any orientation, and excellent soft tissue contrast, can also display the rhythmic contraction and relaxation of the heart in continuous frames. It is commonly used for clinical observation of the ventricular and myocardial structures and functional assessment. Cardiac cine MRI not only displays the morphology and function of the heart but also helps physicians make comprehensive judgments about a patient's myocardial activity, making it an important tool for the examination and evaluation of clinical cardiovascular diseases.

[0003] Current clinically used conventional cardiac cine imaging techniques primarily employ two-dimensional gradient echo (GRE) or balanced steady-state free precession (bSSFP) sequences. During the scan, electrocardiography (ECG) gating and repeated breath-holding by the patient are necessary to minimize the influence of cardiac contractions and respiratory movements. Cine imaging techniques are further categorized into prospective and retrospective cine imaging. Regardless of the approach, the number of K-space lines is identical for each cardiac cycle acquisition phase, thus failing to improve the temporal resolution of the central K-space region. Summary of the Invention

[0004] Therefore, it is necessary to provide a cardiac cine magnetic resonance imaging method, apparatus, system, computer equipment, and storage medium to address the aforementioned technical problems.

[0005] In a first aspect, embodiments of the present invention provide a cardiac cine magnetic resonance imaging method, the method comprising:

[0006] Based on the magnetic resonance imaging data of cardiac cinema, corresponding K-space data is generated; wherein, the number of lines of each phase contained in the central region of the K-space data is less than a first preset number of lines.

[0007] The number of lines in each phase contained in the peripheral region data of the K-space data is greater than or equal to the first preset number of lines;

[0008] Based on the K-space data, a cardiac cinematic magnetic resonance image is reconstructed.

[0009] In one embodiment, the central region data of the K-space data includes magnetic resonance imaging data acquired during at least one cardiac cycle.

[0010] In one embodiment, the number of phases contained in the central region data of the K-space data is determined based on the cardiac cycle corresponding to the central region data of the K-space data and the number of lines of each phase.

[0011] In one embodiment, reconstructing and generating cardiac cine magnetic resonance images based on the K-space data includes:

[0012] Interpolation processing of the K-space data;

[0013] Based on the interpolated K-space data, a cardiac cinema magnetic resonance image is reconstructed.

[0014] In one embodiment, reconstructing and generating cardiac cine magnetic resonance images based on the K-space data includes:

[0015] Interpolation processing is performed on the peripheral region data of the K-space data to obtain the same number of periods and phases as the central region of the K-space data;

[0016] The cardiac cine magnetic resonance image is reconstructed based on the central region data of the K-space data and the peripheral region data of the interpolated K-space data.

[0017] In one embodiment, reconstructing and generating cardiac cine magnetic resonance images based on the K-space data includes:

[0018] Interpolation processing is performed on the central region data and the peripheral region data of the K-space data respectively to achieve the set number of phases;

[0019] The cardiac cine magnetic resonance image is reconstructed based on the central region data and the peripheral region data of the interpolated K-space data.

[0020] Secondly, embodiments of the present invention provide a cardiac cine magnetic resonance imaging device, the device comprising:

[0021] The acquisition module is used to generate corresponding K-space data based on the magnetic resonance imaging data of cardiac cine. The number of lines in each phase contained in the central region of the K-space data is less than a first preset number of lines, and the number of lines in each phase contained in the peripheral region of the K-space data is greater than or equal to the first preset number of lines.

[0022] An image reconstruction module is used to reconstruct and generate cardiac cinema magnetic resonance images based on the K-space data.

[0023] In one embodiment, the central region data of the K-space data includes magnetic resonance imaging data acquired during at least one cardiac cycle.

[0024] In one embodiment, the number of phases contained in the central region data of the K-space data is determined based on the cardiac cycle corresponding to the central region data of the K-space data and the number of lines of each phase.

[0025] In one embodiment, the image reconstruction module is specifically used for: interpolating the K-space data; and reconstructing a cardiac cinema magnetic resonance image based on the interpolated K-space data.

[0026] In one embodiment, the image reconstruction module includes:

[0027] The first interpolation processing module is used to perform interpolation processing on the peripheral region data of the K-space data to obtain the same number of periods and phases as the central region of the K-space data.

[0028] The first reconstruction module is used to reconstruct the cardiac cinema magnetic resonance image based on the central region data of the K-space data and the peripheral region data of the interpolated K-space data.

[0029] In one embodiment, the image reconstruction module includes:

[0030] The first interpolation processing module is used to perform interpolation processing on the central region data and the peripheral region data of the K-space data respectively, so as to achieve the set number of periods respectively;

[0031] The first reconstruction module is used to reconstruct the cardiac cine magnetic resonance image based on the central region data and the peripheral region data of the interpolated K-space data.

[0032] Thirdly, embodiments of the present invention provide a magnetic resonance imaging system, the system comprising a scanning device for scanning a part of a subject to be scanned to obtain magnetic resonance scanning data, and a cardiac cine magnetic resonance imaging apparatus as described in the second aspect.

[0033] Fourthly, embodiments of the present invention provide a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, it implements the steps of the method described in the first aspect.

[0034] Fifthly, embodiments of the present invention provide a computer-readable storage medium having a computer program stored thereon, wherein the processor executes the computer program to implement the steps described in the first aspect.

[0035] Compared to existing technologies, the aforementioned methods, apparatus, systems, computer equipment, and storage media generate corresponding K-space data based on cardiac cine magnetic resonance imaging (MRI) scan data. Specifically, the number of lines in each phase contained in the central region of the K-space data is less than a first preset number of lines; the number of lines in each phase contained in the peripheral region of the K-space data is greater than or equal to the first preset number of lines; and a cardiac cine MRI image is reconstructed based on the K-space data. This invention improves the temporal resolution of the central region of the K-space data by reducing the number of lines in each phase contained in the central region of the K-space data. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of a magnetic resonance imaging system in one embodiment;

[0037] Figure 2 This is a schematic flowchart of a cardiac cine magnetic resonance imaging method in one embodiment;

[0038] Figure 3 This is a flowchart illustrating an image reconstruction method in one embodiment;

[0039] Figure 4 This is a timing diagram of cardiac signal acquisition in an example embodiment;

[0040] Figure 5 This is a flowchart illustrating the image reconstruction method in another embodiment;

[0041] Figure 6 This is a timing diagram of cardiac signal acquisition in another example embodiment;

[0042] Figure 7 This is a schematic diagram of the cardiac cine magnetic resonance imaging device in one embodiment;

[0043] Figure 8 This is a schematic diagram of the structure of a computer device in one embodiment. Detailed Implementation

[0044] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely some examples or embodiments of the present invention. For those skilled in the art, the present invention can be applied to other similar scenarios based on these drawings without creative effort. Unless obvious from the context or otherwise specified, the same reference numerals in the drawings represent the same structures or operations.

[0045] As indicated in this invention and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" do not specifically refer to the singular and may also include the plural. Generally speaking, the terms "comprising" and "including" only indicate the inclusion of explicitly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements.

[0046] While this invention makes various references to certain modules in systems according to embodiments of the invention, any number of different modules can be used and run on computing devices and / or processors. Modules are merely illustrative, and different aspects of the system and method may use different modules.

[0047] It should be understood that when a unit or module is described as "connected" or "coupled" to other units, modules, or blocks, it may refer to a direct connection or coupling, or communication with other units, modules, or blocks, or the presence of intermediate units, modules, or blocks, unless the context explicitly indicates otherwise. The term "and / or" as used herein may include any and all combinations of one or more of the related listed items.

[0048] like Figure 1 As shown, the magnetic resonance imaging system may include a scanning device 110, a cardiac cine magnetic resonance imaging device 120, a storage device 140, and a display device 150. The devices in the magnetic resonance imaging system can be interconnected or communicate with each other via a network 130.

[0049] The scanning device 110 can scan an object. The object can be a physical object, a human body, an organ, tissue, etc. The scanning device can be a medical imaging device. In one embodiment, the scanning device 110 can be a magnetic resonance imaging (MRI) scanner. In another embodiment, the scanning device 110 can also be a multimodal scanning device that includes magnetic resonance imaging modalities, such as an MR-Linac scanner, a PET-MRI scanner, etc. The scanning device 110 can generate magnetic resonance scan data corresponding to the object after scanning. Further, the scanning device 110 can send the acquired magnetic resonance scan data via network 130 to a cardiac cine magnetic resonance imaging device 120, a storage device 140, or a display device 150.

[0050] The cardiac cine magnetic resonance imaging (MRI) apparatus 120 can process magnetic resonance scan data. The MRI scan data can be obtained through scanning by the scanning device 110 or from the storage device 140. In one embodiment, the MRI scan data can be two-dimensional or three-dimensional image data representing anatomical and / or functional information of the scanned object. The processing can include reconstructing the MRI scan data to generate an image. The reconstruction method can include interpolation reconstruction. The cardiac cine MRI apparatus 120 can send the interpolated reconstructed image to the storage device 140 for storage.

[0051] Network 130 can be any connection method that connects two or more devices. For example, network 130 can be a wired network or a wireless network. In one embodiment, network 130 can be a single network or a combination of multiple networks. For example, network 130 may include one or more of the following: local area network (LAN), wide area network (WAN), public network, private network, wireless LAN, virtual network, public telephone network, etc. The modules in the magnetic resonance imaging system can interact with each other by connecting to network 130.

[0052] Storage device 140 can store data and / or information. For example, storage device 140 can store magnetic resonance scan data generated by scanning device 110, images reconstructed by cardiac cine magnetic resonance imaging device 120, and user input or instructions received by display device 150. In one embodiment, storage device 140 can be local storage, external storage, cloud storage, etc.

[0053] Display device 150 can be used to display images. Display device 150 may include a display screen, touch screen, etc. In one embodiment, display device 150 may include an interactive interface that can receive input from a user or doctor. In one embodiment, display device 150 may include an input device such as a touchpad, touch screen, mouse, keyboard, microphone, etc. Display device 150 can send user input to cardiac cine magnetic resonance imaging device 120 for processing or to storage device 140 for storage.

[0054] Figure 2 This is a flowchart of a cardiac cine magnetic resonance imaging method according to an embodiment of the present invention. In one embodiment, the process can be implemented using a cardiac cine magnetic resonance imaging device 120. In one embodiment, such as Figure 2 As shown, a cardiac cine magnetic resonance imaging method is proposed, including the following steps:

[0055] S201: Generate corresponding K-space data based on cardiac cine magnetic resonance scan data.

[0056] In this context, the number of lines in each phase contained in the central region of the K-space data is less than a first preset number of lines. The number of lines in each phase contained in the outer region of the K-space data is greater than or equal to the first preset number of lines.

[0057] In magnetic resonance imaging (MRI), the data is recorded using data lines. The number of lines in each phase refers to the number of data lines contained in that phase. Each data line has a timestamp, which indicates the time when the data was acquired on that line. During MRI, the acquired MRI scan data needs to be mapped to K-space to generate corresponding K-space data; that is, the original acquired time-domain data is mapped to the frequency domain.

[0058] S202: Based on the K-space data, reconstruct and generate a cardiac cinema magnetic resonance image.

[0059] In related technologies, the number of lines in each phase of K-space data is the same, thus making it impossible to improve the temporal resolution of the central region of K-space. In this embodiment, the number of lines in each phase of the central region of K-space data is less than a first preset number of lines, which can be understood as the number of lines in each phase during normal scanning. Based on this, by reducing the number of lines in each phase of the central region data, the temporal resolution of the central region of K-space is improved.

[0060] In this embodiment, the number of lines in each phase contained in the outer region data of the K-space data is greater than or equal to the first preset number of lines. By increasing the number of lines in each phase contained in the outer region data of the K-space data, more detailed information is obtained.

[0061] By reducing the number of lines for each phase contained in the central region of the K-space data, even if the number of lines for each phase contained in the outer region of the K-space data is appropriately increased, the acquisition time of the lines can still be guaranteed to be within the set time range.

[0062] It should be noted that this cardiac cine MRI method is applicable to both retrospective and prospective cardiac cine MRI. For both retrospective and prospective cardiac cine MRI, the number of phases corresponding to each cardiac cycle is the same.

[0063] The cardiac cycle refers to the process that the cardiovascular system undergoes from the start of one heartbeat to the start of the next. The changes in intraventricular pressure, ventricular volume, blood flow, and valvular activity during each phase of the cardiac cycle, centered on the ventricular contraction and relaxation, can be divided into eight phases: isovolumetric contraction, rapid ejection, slow ejection, prediastole, isovolumetric relaxation, rapid filling, slow filling, and atrial contraction.

[0064] Heartbeat signals can be obtained through electrocardiogram (ECG) monitoring equipment. The waveform of the heartbeat signal is periodic, with the highest peak in the waveform being the R wave. The waveform between two adjacent R waves corresponds to one cardiac cycle.

[0065] After obtaining the duration of each cardiac cycle through the heartbeat signal, the magnetic resonance imaging (MRI) scan data of abnormal cardiac cycles, such as those with arrhythmia, can be removed based on a specified range of normal cardiac cycle durations. For example, cardiac cycles with durations shorter than the minimum value of the normal cardiac cycle duration range, or cardiac cycles with durations longer than the maximum value of the normal cardiac cycle duration range.

[0066] In this embodiment, the central region data of the K-space data includes magnetic resonance scan data acquired during at least one cardiac cycle.

[0067] The number of phases contained in the central region of the K-space data is determined based on the cardiac cycle and the number of lines of each phase corresponding to the central region of the K-space data.

[0068] In one embodiment, the step of reconstructing and generating a cardiac cinema magnetic resonance image based on the K-space data includes: interpolating the K-space data; and reconstructing and generating a cardiac cinema magnetic resonance image based on the interpolated K-space data.

[0069] In one specific embodiment, such as Figure 3 As shown, for retrospective cardiac cine magnetic resonance imaging, the process of reconstructing and generating cardiac cine magnetic resonance images based on the K-space data includes:

[0070] S301: Interpolate the data in the outer region of the K-space data to obtain the same number of periods and phases as the central region of the K-space data;

[0071] S302: Based on the central region data of the K-space data and the peripheral region data of the interpolated K-space data, the cardiac cinema magnetic resonance image is reconstructed.

[0072] Since the number of phase lines contained in the central region of the K-space data is reduced, interpolation processing is required in the outer region of the K-space data during image reconstruction to increase the number of phases.

[0073] In one example embodiment, the timing sequence for acquiring cardiac signals is as follows: Figure 4 As shown in the figure, the central region data of the K-space data contains phases P1, P2, P3, ... PM-2, PM-1, PM. Fewer lines are acquired for each phase of the central region data, as shown by 2 lines in the figure, to improve the temporal resolution. More lines are acquired in the outer region of the K-space data, as shown by 3 lines in the figure. Finally, a cardiac cine MRI image with the same number of phases as the central region data of the K-space data is reconstructed through interpolation.

[0074] In another embodiment, for prospective cardiac magnetic resonance cine imaging, such as Figure 5 As shown, the process of reconstructing and generating cardiac cinema magnetic resonance images based on the K-space data includes:

[0075] S501: Interpolate the central region data and the peripheral region data of the K-space data respectively to achieve the set number of phases;

[0076] S502: Based on the central region data and the peripheral region data of the interpolated K-space data, the cardiac cinema magnetic resonance image is reconstructed.

[0077] For prospective cardiac magnetic resonance cine imaging, the number of phases contained in the central and peripheral regions of the K-space data is a predetermined number of phases. Therefore, it is necessary to perform interpolation processing on the central and peripheral regions of the K-space data to achieve the predetermined number of phases respectively.

[0078] In one example embodiment, the timing sequence for acquiring cardiac signals is as follows: Figure 6 As shown. The central region data of the K-space data includes phases P1, P2, ..., PM-2, PM-1, PM, and the peripheral region data of the K-space data includes phases P1, P2, ..., PK-1, PK. The central region data and the peripheral region data of the K-space data are interpolated to form N predetermined phases, and finally the cardiac cine magnetic resonance image is reconstructed.

[0079] It should be understood that although the steps in the flowchart above are shown sequentially as indicated by the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowchart above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps.

[0080] In one embodiment, such as Figure 7 As shown, the present invention provides a cardiac cine magnetic resonance imaging device, the device comprising:

[0081] The acquisition module 701 is used to generate corresponding K-space data based on the magnetic resonance imaging data of cardiac cine. The number of lines in each phase contained in the central region of the K-space data is less than a first preset number of lines. The number of lines in each phase contained in the peripheral region of the K-space data is greater than or equal to the first preset number of lines.

[0082] Image reconstruction module 702 is used to reconstruct and generate cardiac cinema magnetic resonance images based on the K-space data.

[0083] Based on the cardiac cine magnetic resonance imaging (MRI) data, corresponding K-space data is generated; based on the K-space data, a cardiac cine MRI image is reconstructed. The number of lines in each phase within the central region of the K-space data is less than a first preset number of lines, which can be understood as the number of lines in each phase during a normal scan. Therefore, by reducing the number of lines in each phase within the central region data, the temporal resolution of the central region of the K-space data is improved.

[0084] In one embodiment, the central region data of the K-space data includes magnetic resonance imaging data acquired during at least one cardiac cycle.

[0085] In one embodiment, the number of phases contained in the central region data of the K-space data is determined based on the cardiac cycle corresponding to the central region data of the K-space data and the number of lines of each phase.

[0086] In one embodiment, the image reconstruction module is specifically used for: interpolating the K-space data; and reconstructing a cardiac cinema magnetic resonance image based on the interpolated K-space data.

[0087] In one embodiment, the image reconstruction module includes:

[0088] The first interpolation processing module is used to perform interpolation processing on the peripheral region data of the K-space data to obtain the same number of periods and phases as the central region of the K-space data.

[0089] The first reconstruction module is used to reconstruct the cardiac cinema magnetic resonance image based on the central region data of the K-space data and the peripheral region data of the interpolated K-space data.

[0090] In one embodiment, the image reconstruction module includes:

[0091] The first interpolation processing module is used to perform interpolation processing on the central region data and the peripheral region data of the K-space data respectively, so as to achieve the set number of periods respectively;

[0092] The first reconstruction module is used to reconstruct the cardiac cine magnetic resonance image based on the central region data and the peripheral region data of the interpolated K-space data.

[0093] Specific limitations regarding the cardiac cine magnetic resonance imaging (MRI) device can be found in the limitations of the cine imaging method described above, and will not be repeated here. Each module in the aforementioned device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in hardware or independently of the processor in a computer device, or stored in software in the memory of a computer device, so that the processor can call and execute the operations corresponding to each module.

[0094] In one embodiment, a computer device is provided, which may be a server, and its internal structure diagram may be as follows: Figure 8 As shown. The computer device includes a processor, memory, and a network interface connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system, computer programs, and a database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database stores motion detection data. The network interface communicates with external terminals via a network connection. When the computer program is executed by the processor, it implements the steps in any of the above-described embodiments of the movie imaging method.

[0095] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0096] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the steps in any of the above-described embodiments of the movie imaging method.

[0097] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, or optical storage, etc. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc.

[0098] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0099] The above embodiments merely illustrate several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A cardiac cine magnetic resonance imaging method, characterized in that, The method includes: Based on the magnetic resonance imaging data of cardiac cinema, corresponding K-space data is generated; wherein, the number of lines of each phase contained in the central region of the K-space data is less than a first preset number of lines. The number of lines in each phase contained in the peripheral region data of the K-space data is greater than or equal to the first preset number of lines; Based on the K-space data, a cardiac cinematic magnetic resonance image is reconstructed.

2. The method according to claim 1, characterized in that, The central region data of the K-space data includes magnetic resonance imaging data acquired during at least one cardiac cycle.

3. The method according to claim 2, characterized in that, The number of phases contained in the central region of the K-space data is determined based on the cardiac cycle and the number of lines of each phase corresponding to the central region of the K-space data.

4. The method according to claim 1, characterized in that, The process of reconstructing and generating cardiac cine magnetic resonance images based on the K-space data includes: Interpolation processing of the K-space data; Based on the interpolated K-space data, a cardiac cinema magnetic resonance image is reconstructed.

5. The method according to claim 1, characterized in that, The process of reconstructing and generating cardiac cine magnetic resonance images based on the K-space data includes: Interpolation processing is performed on the peripheral region data of the K-space data to obtain the same number of periods and phases as the central region of the K-space data; The cardiac cine magnetic resonance image is reconstructed based on the central region data of the K-space data and the peripheral region data of the interpolated K-space data.

6. The method according to claim 1, characterized in that, The process of reconstructing and generating cardiac cine magnetic resonance images based on the K-space data includes: Interpolation processing is performed on the central region data and the peripheral region data of the K-space data respectively to achieve the set number of phases; The cardiac cine magnetic resonance image is reconstructed based on the central region data and the peripheral region data of the interpolated K-space data.

7. A cardiac cine magnetic resonance imaging device, characterized in that, The device includes: The acquisition module is used to generate corresponding K-space data based on the magnetic resonance imaging data of cardiac cine. The number of lines in each phase contained in the central region of the K-space data is less than a first preset number of lines, and the number of lines in each phase contained in the peripheral region of the K-space data is greater than or equal to the first preset number of lines. An image reconstruction module is used to reconstruct and generate cardiac cinema magnetic resonance images based on the K-space data.

8. A magnetic resonance imaging system, characterized in that, The system includes a scanning device for scanning the part of the object to be scanned to obtain magnetic resonance scanning data, and a cardiac cine magnetic resonance imaging apparatus as described in claim 7.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.

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