Nuclear magnetic resonance coil, nuclear magnetic resonance module, nuclear magnetic resonance equipment and control method thereof

Abstract

The invention relates to the technical field of nuclear magnetic resonance, and discloses a nuclear magnetic resonance coil, a nuclear magnetic resonance module, nuclear magnetic resonance equipment and a control method thereof, the nuclear magnetic resonance coil comprises a plurality of conductor branches, a first conductor ring, a second conductor ring and a third conductor ring; the conductor branch comprises a first conductor rod, a second conductor rod, a third conductor rod and a line change-over switch. The first ends of the first conductor rod, the second conductor rod and the third conductor rod are connected with the line change-over switch. The nuclear magnetic resonance coil has a function of amplifying a magnetic resonance signal of a first nuclide and a function of generating a radio frequency field of a second type nuclide. The nuclear magnetic resonance coil not only has a function for various nuclides, but also reduces the number and complexity of mechanical components. The nuclear magnetic resonance coil can be switched among functions corresponding to different nuclides through the line change-over switch, mutual influence of forms of the nuclear magnetic resonance coils corresponding to the functions of the different nuclides is avoided, and the signal-to-noise ratio of nuclear resonance signals of each nuclide can be improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of nuclear magnetic resonance, for example, to a nuclear magnetic resonance coil, a nuclear magnetic resonance module, a nuclear magnetic resonance device and a control method thereof. Background Art

[0002] Magnetic resonance imaging (MRI) is a non-invasive medical imaging technology widely used in clinical diagnosis and scientific research. It uses strong magnetic fields, radio frequency pulses and gradient magnetic fields to excite the nuclei in the human body and receives the signals released by these nuclei to generate detailed anatomical images. Existing single-nucleus MRI systems mainly image hydrogen nuclei. With the increasing demand for research on different tissues and metabolic processes, multi-nucleus MRI systems have gradually become a research hotspot, especially tri-nucleus MRI systems, which can image three different nuclides simultaneously or separately, such as hydrogen nuclei, sodium nuclei and phosphorus nuclei.

[0003] The multi-nuclear MRI system not only expands the application range of MRI, but also improves the diagnostic accuracy under specific pathological conditions. In the related art, the multi-nuclear MRI system needs to be equipped with a dedicated nuclear excitation coil and nuclear resonance signal receiving coil for each nuclide. Configuring excitation coils and receiving coils for multiple nuclides will significantly increase the complexity of the system, and the coils of different nuclides will affect each other, resulting in a low signal-to-noise ratio for the nuclear resonance signal received for each nuclide.

[0004] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to ordinary technicians in the field. Summary of the invention

[0005] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical components or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0006] The disclosed embodiments provide a nuclear magnetic resonance coil, a nuclear magnetic resonance module, a nuclear magnetic resonance device and a control method thereof, which can avoid mutual influence of nuclear magnetic resonance coil forms corresponding to the functions of different nuclides, and help to improve the signal-to-noise ratio of the nuclear resonance signal of each nuclide.

[0007] According to a first aspect of the present disclosure, there is provided a nuclear magnetic resonance coil, comprising:

[0008] A plurality of conductor branches, the conductor branches include a first conductor rod, a second conductor rod, a third conductor rod and a line switch, and the first ends of the first conductor rod, the second conductor rod and the third conductor rod are all connected to the line switch;

[0009] A first conductor ring, wherein the second ends of the first conductor rods of the conductor branches are distributed around the first conductor ring and connected to the first conductor ring;

[0010] A second conductor ring, wherein the second ends of the second conductor rods of the conductor branches are distributed around the second conductor ring and connected to the second conductor ring;

[0011] A third conductor ring, wherein the second ends of the third conductor rods of the respective conductor branches are distributed around the third conductor ring and are connected to the third conductor ring;

[0012] The line switching switch is configured to: connect the first conductor rod and the second conductor rod in each conductor branch to convert the nuclear magnetic resonance coil into a magnetic resonance signal amplification coil for the first type of nuclear species; and / or connect the first conductor rod and the third conductor rod in each conductor branch to convert the nuclear magnetic resonance coil into a radio frequency field generating coil for the second type of nuclear species.

[0013] In some embodiments, the first conductor ring is provided with a plurality of first capacitors, each of which is distributed around the first conductor ring, and the second end of the first conductor rod of each conductor branch is connected to the first conductor ring and is located between two adjacent first capacitors;

[0014] The second conductor ring is provided with a plurality of first wave trap modules and second capacitors, each second capacitor is distributed around the second conductor ring, and the second end of the second conductor rod of each conductor branch is connected to the second conductor ring and is located between two adjacent second capacitors;

[0015] The third conductor ring is provided with a plurality of second wave trap modules and third capacitors, each third capacitor is distributed around the third conductor ring, and the second end of the third conductor rod of each conductor branch is connected to the third conductor ring and is located between two adjacent third capacitors.

[0016] In some embodiments, the second conductor bar is provided with a third notch module and a first transceiver conversion switch, and the third conductor bar is provided with a fourth notch module and a second transceiver conversion switch.

[0017] In some embodiments, the third conductor rod is provided with a frequency selection module.

[0018] In some embodiments, the first conductive ring, the second conductive ring and the third conductive ring are coaxially arranged, and in the axial direction, the first conductive ring is on one side of the plurality of conductor branches, and the second conductive ring and the third conductive ring are on the other side of the plurality of conductor branches.

[0019] In some embodiments, the diameters of the first conductive ring and the second conductive ring are the same, and the diameter of the third conductive ring is smaller than the diameter of the second conductive ring.

[0020] In some embodiments, the second conductive ring and the third conductive ring are coplanar.

[0021] According to a second aspect of the present disclosure, a nuclear magnetic resonance module is provided, comprising a surface receiving coil and the nuclear magnetic resonance coil provided by the second aspect of the present disclosure, wherein the surface receiving coil is arranged inside the nuclear magnetic resonance coil.

[0022] According to a third aspect of the present disclosure, a nuclear magnetic resonance device is provided, comprising a control module, a magnet, a gradient coil, a body coil, and the nuclear magnetic resonance module provided by the second aspect of the present disclosure;

[0023] The nuclear magnetic resonance module is arranged inside the body coil, and the gradient coil, the body coil and the nuclear magnetic resonance module are all connected to the control module.

[0024] According to a fourth aspect of the present disclosure, a method for controlling a nuclear magnetic resonance device is provided, comprising:

[0025] The control module controls the general coil to generate a radio frequency field of the first type of nuclide, controls the circuit switching switch to connect the first conductor rod and the second conductor rod in each conductor branch of the nuclear magnetic resonance coil to form a magnetic resonance signal amplifying coil for the first type of nuclide, and uses the magnetic resonance signal amplifying coil to amplify the magnetic resonance signal of the first type of nuclide;

[0026] and / or, controlling the circuit switching switch to connect the first conductor rod and the third conductor rod of each conductor branch of the nuclear magnetic resonance coil to form a radio frequency field generating coil for the second type of nuclide, using the radio frequency field generating coil to generate a radio frequency field of the second type of nuclide, and using the surface receiving coil to receive the magnetic resonance signal of the second type of nuclide;

[0027] And / or, the control circuit switching switch connects the first conductor rod and the third conductor rod of each conductor branch of the nuclear magnetic resonance coil to form a radio frequency field generating coil for the second type of nuclide, and the radio frequency field generating coil is used to generate the radio frequency field of the second type of nuclide; the transmit-receive conversion switch of the third conductor rod is set to high resistance failure, so that the nuclear magnetic resonance coil forms a signal receiving coil, and the signal receiving coil is used to receive the magnetic resonance signal of the second type of nuclide.

[0028] The nuclear magnetic resonance coil, nuclear magnetic resonance module, nuclear magnetic resonance equipment and control method thereof provided by the embodiments of the present disclosure can achieve the following technical effects: the nuclear magnetic resonance coil integrates multiple coils that originally need to be configured independently into a compact structure, and the connection method between the conductor branches can be dynamically adjusted through the line switching switch, so that the nuclear magnetic resonance coil has the function of amplifying the magnetic resonance signal of the first nuclide and generating the radio frequency field of the second type of nuclide. The nuclear magnetic resonance coil not only has functions for multiple nuclides, but also reduces the number and complexity of mechanical components. The nuclear magnetic resonance coil is switched between the functions corresponding to different nuclides through the line switching switch, which avoids the mutual influence of the nuclear magnetic resonance coil forms corresponding to the functions of different nuclides, and helps to improve the signal-to-noise ratio of the nuclear resonance signal of each nuclide.

[0029] The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] One or more embodiments are exemplarily described by corresponding drawings, which do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements, and the drawings do not constitute a scale limitation, and wherein:

[0031] Figure 1 is a schematic structural diagram of a nuclear magnetic resonance coil provided by an embodiment of the present disclosure;

[0032] Figure 2 is a schematic structural diagram of a conductor branch provided by an embodiment of the present disclosure;

[0033] Figure 3 is a structural schematic diagram of a first conductor circle provided by an embodiment of the present disclosure;

[0034] Figure 4 is a structural schematic diagram of a second conductor circle provided by an embodiment of the present disclosure;

[0035] Figure 5 is a structural schematic diagram of a third conductor circle provided by an embodiment of the present disclosure;

[0036] Figure 6 is a schematic structural diagram of another conductor branch provided by an embodiment of the present disclosure;

[0037] Figure 7 is a schematic structural diagram of a nuclear magnetic resonance module provided by an embodiment of the present disclosure;

[0038] Figure 8 is a structural schematic diagram of a surface receiving coil provided by an embodiment of the present disclosure;

[0039] Fig. 9is a structural schematic diagram of a nuclear magnetic resonance device provided by an embodiment of the present disclosure;

[0040] Fig.10 is a schematic diagram of a method for controlling a nuclear magnetic resonance device provided by an embodiment of the present disclosure;

[0041] Fig.11 is a schematic diagram of another method for controlling a nuclear magnetic resonance device provided by an embodiment of the present disclosure;

[0042] Fig.12 It is a schematic diagram of a scanning controller provided in an embodiment of the present disclosure.

[0043] Description of Figure Numbers:

[0044] 100 MRI coils;

[0045] 1 conductor branch;

[0046] 11 a first conductor rod, 111 a first end of the first conductor rod, 112 a second end of the first conductor rod;

[0047] 12 a second conductor rod, 121 a first end of the second conductor rod, 122 a second end of the second conductor rod, 123 a third trap module, 124 a first transceiver conversion switch;

[0048] 13 a third conductor rod, 131 a first end of the third conductor rod, 132 a second end of the third conductor rod, 133 a fourth trap module, 134 a second transceiver conversion switch, 135 a frequency selection module;

[0049] 14-line switch;

[0050] 2 first conductor loop, 21 first capacitor, 22 first contact point;

[0051] 3 second conductor ring, 31 first trap module, 32 second capacitor, 33 second contact point;

[0052] 4 a third conductor ring, 41 a second trap module, 42 a third capacitor, 43 a third contact point;

[0053] 200 surface receiving coil, 201 annular coil, 202 fifth trap module;

[0054] 300 NMR modules;

[0055] 400 control module, 401 computer system, 402 scanning controller, 403 data processor;

[0056] 500 magnets, 600 gradient coils, 700 body coils. DETAILED DESCRIPTION

[0057] In order to be able to understand the features and technical contents of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0058] The terms "first", "second", etc. in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchanged where appropriate, so that the embodiments of the embodiments of the present disclosure described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions.

[0059] Unless otherwise stated, the term "plurality" means two or more.

[0060] In the embodiment of the present disclosure, the character " / " indicates that the preceding and following objects are in an "or" relationship. For example, A / B indicates: A or B.

[0061] The term "and / or" is a description of the association relationship between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or, A and B.

[0062] The term "correspondence" may refer to an association relationship or a binding relationship. The correspondence between A and B means that there is an association relationship or a binding relationship between A and B.

[0063] The present disclosure provides a nuclear magnetic resonance coil 100, such as Figure 1 As shown, the nuclear magnetic resonance coil 100 includes a conductor branch 1, a first conductor ring 2, a second conductor ring 3 and a third conductor ring 4. There are multiple conductor branches 1, and the specific number of the conductor branches 1 can be determined according to actual design requirements. For example, the nuclear magnetic resonance coil 100 includes 8 conductor branches 1.

[0064] like Figure 2As shown, the conductor branch 1 includes a first conductor rod 11, a second conductor rod 12, a third conductor rod 13 and a line switch 14. The first end 111 of the first conductor rod 11, the first end 121 of the second conductor rod 12 and the first end 131 of the third conductor rod 13 are all connected to the line switch 14, thereby forming an approximately Y-shaped structure. The second end 112 of the first conductor rod 11 of each conductor branch 1 is distributed along the first conductor ring 2 and connected to the first conductor ring 2. The second end 122 of the second conductor rod 12 of each conductor branch 1 is distributed along the second conductor ring 3 and connected to the second conductor ring 3. The second end 132 of the third conductor rod 13 of each conductor branch 1 is distributed along the third conductor ring 4 and connected to the third conductor ring 4.

[0065] The line switch 14 can change the connection relationship between the first conductor rod 11, the second conductor rod 12 and the third conductor rod 13. Specifically, the line switch 14 can dynamically adjust the connection mode inside the conductor branch 1. The line switch 14 can switch between the following two states:

[0066] State 1: connecting the first conductor rod 11 and the second conductor rod 12, while disconnecting the third conductor rod 13;

[0067] State 2: the first conductor rod 11 and the third conductor rod 13 are connected, and the connection with the second conductor rod 12 is disconnected.

[0068] In this way, the line switch 14 allows the circuit path between the conductor bars in the conductor branch 1 to be flexibly changed to adapt to different operating requirements.

[0069] In some embodiments, based on the state switching function of the line switching switch 14, it can be configured as follows: the first conductor rod 11 and the second conductor rod 12 in each conductor branch 1 are connected, and the nuclear magnetic resonance coil 100 is converted into a magnetic resonance signal amplification coil for the first type of nuclide. Specifically, after the first conductor rod 11 and the second conductor rod 12 in the conductor branch 1 are connected through the line switching switch 14, the first conductor rod 11, the line switching switch 14 and the second conductor rod 12 of each conductor branch 1, and the first conductor ring 2 and the second conductor ring 3 form a complete accommodating cavity. At this time, the structural form of the nuclear magnetic resonance coil 100 is a magnetic resonance signal amplification coil that can amplify the magnetic resonance signal of the first type of nuclide.

[0070] In some embodiments, based on the state switching function of the circuit switching switch 14, the circuit switching switch 14 can be configured to: connect the first conductor rod 11 and the third conductor rod 13 in each conductor branch 1, and convert the nuclear magnetic resonance coil 100 into a radio frequency field generating coil for the second type of nuclide. Specifically, after the first conductor rod 11 and the third conductor rod 13 in the conductor branch 1 are connected through the circuit switching switch 14, the first conductor rod 11, the circuit switching switch 14 and the third conductor rod 13 of each conductor branch 1, as well as the first conductor ring 2 and the second conductor ring 3, form a complete accommodating cavity. At this time, the structural form of the nuclear magnetic resonance coil 100 is a radio frequency field generating coil that can generate a radio frequency field of the second type of nuclide.

[0071] In the embodiment of the present disclosure, the first type of nuclides may be hydrogen nuclides. The second type of nuclides are nuclides other than hydrogen nuclides. The number of types of the second type of nuclides may be determined according to actual design requirements. For example, there are two types of the second type of nuclides, namely sodium nuclides and phosphorus nuclides.

[0072] The nuclear magnetic resonance coil 100 provided in the embodiment of the present disclosure integrates multiple coils that originally need to be configured independently into a compact structure. The connection mode between the conductor branches 1 can be dynamically adjusted through the line switching switch 14, so that the nuclear magnetic resonance coil 100 has the function of amplifying the magnetic resonance signal of the first nuclide and the function of generating the radio frequency field of the second type of nuclide. The nuclear magnetic resonance coil 100 not only has functions for multiple nuclides, but also reduces the number and complexity of mechanical components compared with the four-end ring birdcage or double-layer birdcage structure. The nuclear magnetic resonance coil 100 is switched between the functions corresponding to different nuclides through the line switching switch 14, avoiding the mutual influence of the nuclear magnetic resonance coil 100 forms corresponding to the functions of different nuclides, which helps to improve the signal-to-noise ratio of the nuclear resonance signal of each nuclide.

[0073] In some embodiments, the first conductor ring 2 is provided with a plurality of first capacitors 21, each of which is distributed around the first conductor ring 2. The second end 112 of the first conductor rod 11 of each conductor branch 1 is connected to the first conductor ring 2 and is located between two adjacent first capacitors 21.

[0074] In the embodiment of the present disclosure, the number of the first capacitors 21 is equal to the number of the conductor branches 1. Figure 3 As shown, a first contact point 22 is provided between any two adjacent first capacitors 21 in the first conductor loop 2. Each first contact point 22 is used to connect the second end 112 of the first conductor rod 11 of a conductor branch 1.

[0075] In some embodiments, the second conductor ring 3 is provided with a plurality of first wave trap modules 31 and second capacitors 32, and each second capacitor 32 is distributed around the second conductor ring 3. The second end 122 of the second conductor rod 12 of each conductor branch 1 is connected to the second conductor ring 3 and is located between two adjacent second capacitors 32.

[0076] In the embodiment of the present disclosure, the number of the first wave trap modules 31 can be determined according to actual design requirements. For example, the second conductor ring 3 can be provided with two first wave trap modules 31. Each first wave trap module 31 is provided between different second capacitors 32. The number of the second capacitors 32 is equal to the number of the conductor branches 1. Figure 4 As shown, a second contact point 33 is provided in the portion between any two adjacent second capacitors 32 in the second conductor circle. Each second contact point 33 is used to connect the second end 122 of the second conductor rod 12 of a conductor branch 1.

[0077] In some embodiments, the third conductor ring 4 is provided with a plurality of second wave trap modules 41 and third capacitors 42, and each third capacitor 42 is distributed around the third conductor ring 4. The second end 132 of the third conductor rod 13 of each conductor branch 1 is connected to the third conductor ring 4 and is located between two adjacent third capacitors 42.

[0078] In the embodiment of the present disclosure, the number of the second wave trap modules 41 can be determined according to actual design requirements. For example, the third conductor ring 4 can be provided with two second wave trap modules 41. Each second wave trap module 41 is provided between different third capacitors 42. The number of the third capacitors 42 is equal to the number of the conductor branches 1. Figure 5 As shown, a third contact point 43 is provided in the portion between any two adjacent third capacitors 42 in the third conductor loop 4. Each third contact point 43 is used to connect the second end 132 of the third conductor rod 13 of a conductor branch 1.

[0079] In some embodiments, reference Figure 6 As shown, the second conductor rod 12 is provided with a third trap module 123 and a first transceiver conversion switch 124, and the first transceiver conversion switch 124 can be switched between the two states of high resistance and high resistance failure. When the line switching switch 14 connects the first conductor rod 11 and the second conductor rod 12 in each conductor branch 1, and converts the nuclear magnetic resonance coil 100 into a magnetic resonance signal amplifying coil for the first type of nuclide, when high resistance is formed at the first transceiver conversion switch 124, the magnetic resonance signal amplifying coil is detuned; when the high resistance at the first transceiver conversion switch 124 fails, the magnetic resonance signal amplifying coil is tuned, and at this time, the magnetic resonance signal amplifying coil can amplify the magnetic resonance signal of the first type of nuclide.

[0080] In some embodiments, reference Figure 6 As shown, the third conductor rod 13 is provided with a fourth trap module 133 and a second transceiver conversion switch 134. The second transceiver conversion switch 134 can be switched between the two states of high resistance and high resistance failure. When the line switching switch 14 connects the first conductor rod 11 and the third conductor rod 13 in each conductor branch 1, and converts the nuclear magnetic resonance coil 100 into a radio frequency field generating coil for the second type of nuclide, when high resistance is formed at the second transceiver conversion switch 134, the radio frequency field generating coil is detuned; when the second transceiver conversion switch 134 fails to have high resistance, the radio frequency field generating coil can generate a radio frequency field of the second type of nuclide.

[0081] In some embodiments, reference Figure 6 As shown, the third conductor rod 13 is provided with a frequency selection module 135. As mentioned above, there are multiple types of the second type of nuclides. In the case where there are multiple types of the second type of nuclides, the type of the radio frequency field generated by the radio frequency field generating coil can be set by the frequency selection module 135 of the third conductor rod 13. For example, there are two types of the second type of nuclides, namely sodium nuclei and phosphorus nuclei. Here, the radio frequency field generating coil can be set to generate a sodium nucleus radio frequency field or a phosphorus nucleus radio frequency field through the frequency selection module 135.

[0082] In some embodiments, the first conductive ring 2 , the second conductive ring 3 and the third conductive ring 4 are coaxially arranged. In the axial direction, the first conductive ring 2 is on one side of the plurality of conductor branches 1 , and the second conductive ring 3 and the third conductive ring 4 are on the other side of the plurality of conductor branches 1 .

[0083] In some embodiments, the diameters of the first conductive ring 2 and the second conductive ring 3 are the same, and the diameter of the third conductive ring 4 is smaller than the diameter of the second conductive ring 3 .

[0084] In some embodiments, the second conductive ring 3 and the third conductive ring 4 are coplanar.

[0085] The present disclosure provides a nuclear magnetic resonance module 300, combined with Figure 7 As shown, the NMR module 300 includes a surface receiving coil 200 and the NMR coil 100 provided in the above embodiment. The surface receiving coil 200 is arranged inside the NMR coil 100. The surface receiving coil 200 can receive the magnetic resonance signal of the second type of nuclide. Figure 8 As shown, the surface receiving coil 200 includes a plurality of annular coils 201 and a plurality of fifth wave trap modules 202 , and each annular coil 201 is provided with at least one fifth wave trap module 202 .

[0086] When the line switching switch 14 connects the first conductor rod 11 and the second conductor rod 12 in each conductor branch 1, and converts the nuclear magnetic resonance coil 100 into a magnetic resonance signal amplifying coil for the first type of nuclide, when a high resistance is formed at the first transceiver conversion switch 124, the magnetic resonance signal amplifying coil is detuned; when the high resistance at the first transceiver conversion switch 124 fails, the magnetic resonance signal amplifying coil is tuned, and the magnetic resonance signal amplifying coil can amplify the magnetic resonance signal of the first type of nuclide. The fifth notch module 202 can detune the surface receiving coil 200, and the second notch module 41 can detune the third conductor ring 4.

[0087] When the line switching switch 14 connects the first conductor rod 11 and the third conductor rod 13 in each conductor branch 1, and converts the nuclear magnetic resonance coil 100 into a radio frequency field generating coil for the second type of nuclide, when a high resistance is formed at the second transceiver conversion switch 134, the radio frequency field generating coil is detuned; when the high resistance of the second transceiver conversion switch 134 fails, the radio frequency field generating coil can generate a radio frequency field of the second type of nuclide. The fifth notch module 202 can detune the surface receiving coil 200, and the first notch module 31 can detune the second conductor ring 3.

[0088] In the embodiment of the present disclosure, the surface receiving coil 200 also includes a switch and a frequency selection module 135. The high resistance failure at the switch of the surface receiving coil 200 can tune the surface receiving coil 200, and the tuned surface receiving coil 200 can receive the magnetic resonance signal of the second type of nuclide. As mentioned above, there are multiple types of the second type of nuclide. In the case where there are multiple types of the second type of nuclide, the type of nuclear resonance signal that the surface receiving coil 200 can be set through the frequency selection module 135 of the surface receiving coil 200. For example, there are two types of the second type of nuclide, namely sodium nuclear resonance signal and phosphorus nuclear resonance signal. Here, the surface receiving coil 200 can be set to receive sodium nuclear resonance signal or phosphorus nuclear resonance signal through the frequency selection module 135.

[0089] The nuclear magnetic resonance module 300 provided in the embodiment of the present disclosure configures a surface receiving coil 200 for the nuclear magnetic resonance coil 100. The surface receiving coil 200 can receive nuclear resonance signals of different second-type nuclides, which helps to reduce the number of coils used to receive nuclear resonance signals and simplifies the structure of the overall system.

[0090] The present disclosure provides a nuclear magnetic resonance device, combined with Fig. 9As shown, the nuclear magnetic resonance device includes a control module 400, a magnet 500, a gradient coil 600, a body coil 700, and the nuclear magnetic resonance module 300 provided in the above embodiment. The gradient coil 600 is arranged inside the magnet 500, the body coil 700 is arranged inside the gradient coil 600, the nuclear magnetic resonance module 300 is arranged inside the body coil 700, the gradient coil 600, the body coil 700 and the nuclear magnetic resonance module 300 are all connected to the control module 400, and the body coil 700 is provided with a switch.

[0091] In the disclosed embodiment, the magnet 500 is used to generate a strong and uniform static magnetic field, which causes the hydrogen nuclei in the human body to align in a specific direction. The gradient coil 600 is responsible for applying linear magnetic field gradients that vary with time. These gradients are used to encode spatial information so that specific anatomical structure images can be reconstructed after Fourier transformation. The body coil 700 refers to an MRI (Magnetic Resonance Imaging) coil designed for imaging a large area of ​​the human body or the entire body, and is used to provide a uniform radio frequency field.

[0092] In the disclosed embodiment, the control module 400 may include a computer system 401, a scan controller 402 and a data processor 403, and the scan controller 402 and the data processor 403 are both connected to the computer system 401. The body coil 700, the NMR coil 100 and the surface receiving coil 200 in the NMR module 300 are all connected to the scan controller 402 via cables, and the NMR coil 100 and the surface receiving coil 200 in the NMR module 300 are connected to the data processor 403 via cables.

[0093] In the disclosed embodiment, the third conductor loop 4 in the nuclear magnetic resonance coil 100 is equipped with a third capacitor 42, and part of the third capacitor 42 can be connected to the scanning controller 402 via a coaxial cable for tuning and matching the radio frequency signal.

[0094] In the disclosed embodiment, the second conductor ring 3 is equipped with a first notch module 31, the third conductor ring 4 is equipped with a second notch module 41, the second conductor rod 12 is provided with a third notch module 123 and a first transceiver conversion switch 124, and the third conductor rod 13 is provided with a fourth notch module 133, a second transceiver conversion switch 134 and a frequency selection module 135. These notch modules, transceiver conversion switches and frequency selection modules 135 are connected to the scanning controller 402 through control cables to ensure that they can be precisely controlled as needed to meet different requirements.

[0095] In the embodiment of the present disclosure, the body coil 700 is provided with a switch, and the switch of the body coil 700 is connected to the scanning controller 402 via a control cable.

[0096] In the disclosed embodiment, the nuclear magnetic resonance device further includes a local coil (not shown in the figure), which can receive the magnetic resonance signal of the first type of nuclide. The local coil is connected to the control module 400, and specifically, the local coil is connected to the scanning controller 402 and the data processor 403 in the control module 400.

[0097] In combination with the nuclear magnetic resonance device provided in the embodiment of the present disclosure, the embodiment of the present disclosure provides a method for controlling the nuclear magnetic resonance device. The execution subject of the method is the control module 400 in the nuclear magnetic resonance device, such as Fig.10 As shown, the nuclear magnetic resonance device control method includes:

[0098] S101, the control module 400 controls the body coil 700 to generate a radio frequency field of a first type of nuclear species, and controls the line switching switch 14 to connect the first conductor rod 11 and the second conductor rod 12 in each conductor branch 1 of the nuclear magnetic resonance coil 100 to form a magnetic resonance signal amplifying coil for the first type of nuclear species.

[0099] In the embodiment of the present disclosure, the first type of nuclide may be a hydrogen nucleus.

[0100] In S101 , the switch of the body coil 700 is in a high impedance failure state, and the first transceiver switch 124 , the second transceiver switch 134 , the switch of the surface receiving coil 200 , the second notch module 41 , the fourth notch module 133 and the fifth notch module 202 are all in a high impedance state.

[0101] In the disclosed embodiment, the scanning controller 402 turns on the switch of the body coil 700 so that the body coil 700 generates a radio frequency field of the first type of nuclide, and the first type of nuclide in the human body is excited to a high energy state. The control module 400 controls the line switching switch 14 to connect the first conductor rod 11 and the second conductor rod 12 in each conductor branch 1 of the nuclear magnetic resonance coil 100 to form a magnetic resonance signal amplifying coil for the first type of nuclide, and a high impedance is formed at the first transceiver conversion switch 124, and the magnetic resonance signal amplifying coil is detuned. The fifth notch module 202 can detune the surface receiving coil 200, and the second notch module 41 can detune the third conductor ring 4.

[0102] S102, the control module 400 amplifies the magnetic resonance signal of the first type of nuclide by using the magnetic resonance signal amplifying coil.

[0103] In S102, the line switching switch 14 connects the first conductor rod 11 and the second conductor rod 12 in each conductor branch 1 of the nuclear magnetic resonance coil 100, the first transceiver conversion switch 124 is in a high-impedance failure state, and the switch of the body coil 700, the second transceiver conversion switch 134, the switch of the surface receiving coil 200, the second trap module 41, the fourth trap module 133, and the fifth trap module 202 are all in a high-impedance state.

[0104] In the disclosed embodiment, the first type of nuclide in the human body falls to a low energy state, and emits a magnetic resonance signal of the first type of nuclide. The high resistance at the first transceiver conversion switch 124 fails, and the magnetic resonance signal amplification coil is tuned. At this time, the magnetic resonance signal amplification coil can amplify the magnetic resonance signal of the first type of nuclide. In this process, the fifth notch module 202 can detune the surface receiving coil 200, the second notch module 41 can detune the third conductor loop 4, and the scanning controller 402 turns off the switch of the body coil 700 to detune the body coil 700. The detuning of the third conductor loop 4 and the body coil 700 can prevent the two from affecting the magnetic resonance signal receiving process of the first type of nuclide, which helps to improve the signal-to-noise ratio of the magnetic resonance signal of the first type of nuclide.

[0105] S103, the control module 400 receives the magnetic resonance signal of the first type of nuclear species by using the local coil.

[0106] In S102, the line switching switch 14 connects the first conductor rod 11 and the second conductor rod 12 in each conductor branch 1 of the nuclear magnetic resonance coil 100, the first transceiver conversion switch 124 is in a high-impedance failure state, and the switch of the body coil 700, the second transceiver conversion switch 134, the switch of the surface receiving coil 200, the second trap module 41, the fourth trap module 133, and the fifth trap module 202 are all in a high-impedance state.

[0107] In the embodiment of the present disclosure, the magnetic resonance signal amplified by the magnetic resonance signal amplifying coil is spatially coupled and received by the local coil, and the local coil transmits the magnetic resonance signal to the data processor 403 .

[0108] In combination with the nuclear magnetic resonance device provided in the embodiment of the present disclosure, the embodiment of the present disclosure provides another nuclear magnetic resonance device control method, the execution subject of the method is the control module 400 in the nuclear magnetic resonance device, such as Fig.11 As shown, the nuclear magnetic resonance device control method includes:

[0109] S201 , the control module 400 controls the line switching switch 14 to connect the first conductor rod 11 and the third conductor rod 13 of each conductor branch 1 of the nuclear magnetic resonance coil 100 to form a radio frequency field generating coil for the second type of nuclide.

[0110] S202: The control module 400 generates a radio frequency field of a second type of nuclide using a radio frequency field generating coil.

[0111] In S202, the line switching switch 14 connects the first conductor rod 11 and the third conductor rod 13 of each conductor branch 1 of the nuclear magnetic resonance coil 100, the second transceiver conversion switch 134 is in a high-impedance failure state, and the switch of the body coil 700, the first transceiver conversion switch 124, the switch of the surface receiving coil 200, the first trap module 31 and the third trap module 123 are all in a high-impedance state.

[0112] In the embodiment of the present disclosure, the second type of nuclides is nuclides other than hydrogen nuclides. The number of types of the second type of nuclides can be determined according to actual design requirements. For example, there are two types of the second type of nuclides, namely sodium nuclei and phosphorus nuclei.

[0113] In the disclosed embodiment, the control module 400 connects the first conductor rod 11 and the third conductor rod 13 in each conductor branch 1 at the line switching switch 14, converts the nuclear magnetic resonance coil 100 into a radio frequency field generating coil for the second type of nuclide, the second transceiver conversion switch 134 fails in high impedance, the radio frequency field generating coil is tuned to generate a radio frequency field of the second type of nuclide, and the second type of nuclide in the human body is excited to a high energy state. The control module 400 turns off the switch of the body coil 700 to detune the body coil 700, the fifth notch module 202 can detune the surface receiving coil 200, and the first notch module 31 can detune the second conductor ring 3.

[0114] In the disclosed embodiment, the type of the radio frequency field generated by the radio frequency field generating coil can be set by the frequency selection module 135 of the third conductor rod 13. For example, there are two types of second-type nuclides, namely sodium nuclei and phosphorus nuclei. Here, the radio frequency field generating coil can be set to generate a sodium nucleus radio frequency field or a phosphorus nucleus radio frequency field by the frequency selection module 135.

[0115] After S202 , S203 or S204 may be executed.

[0116] S203, the control module 400 uses the surface receiving coil 200 to receive the magnetic resonance signal of the second type of nuclear species.

[0117] In S203, the line switching switch 14 connects the first conductor rod 11 and the third conductor rod 13 of each conductor branch 1 of the nuclear magnetic resonance coil 100, the switch of the surface receiving coil 200 is in a high-impedance failure state, and the switch of the body coil 700, the first transceiver conversion switch 124, the second transceiver conversion switch 134, the first trap module 31 and the third trap module 123 are all in a high-impedance state.

[0118] In the embodiment of the present disclosure, the second type of nuclide in the human body falls to a low energy state, and emits a magnetic resonance signal of the second type of nuclide. A high resistance is formed at the second transceiver conversion switch 134, and the RF field generating coil is detuned. The high resistance at the switch of the surface receiving coil 200 fails to tune the surface receiving coil 200, and the tuned surface receiving coil 200 receives the magnetic resonance signal of the second type of nuclide, and the surface receiving coil 200 transmits the magnetic resonance signal of the second type of nuclide to the data processor 403. In this process, the first notch module 31 can detune the second conductor loop 3, and the control module 400 turns off the switch of the body coil 700 to detune the body coil 700. The detuning of the second conductor loop 3 and the body coil 700 can prevent the two from affecting the receiving process of the magnetic resonance signal of the second type of nuclide, which helps to improve the signal-to-noise ratio of the magnetic resonance signal of the second type of nuclide.

[0119] In the embodiment of the present disclosure, the type of nuclear resonance signal that the surface receiving coil 200 can receive can be set by the frequency selection module 135 of the surface receiving coil 200. For example, there are two types of second-type nuclides, namely, sodium nuclear resonance signals and phosphorus nuclear resonance signals. Here, the surface receiving coil 200 can be set to receive sodium nuclear resonance signals or phosphorus nuclear resonance signals by the frequency selection module 135.

[0120] It can be understood that the type of radio frequency field generated by the radio frequency field generating coil matches the type of nuclear resonance signal that can be received by the surface receiving coil 200. For example, the radio frequency field generating coil is set to generate a sodium nuclear radio frequency field through the frequency selection module 135 of the radio frequency field generating coil. In this case, the surface receiving coil 200 can be set to receive a sodium nuclear resonance signal through the frequency selection module 135 of the surface receiving coil 200. The radio frequency field generating coil is set to generate a phosphorus nuclear radio frequency field through the frequency selection module 135 of the radio frequency field generating coil. In this case, the surface receiving coil 200 can be set to receive a phosphorus nuclear resonance signal through the frequency selection module 135 of the surface receiving coil 200.

[0121] S204, the control module 400 sets the transmit-receive conversion switch of the third conductor rod 13 to high impedance failure, so that the nuclear magnetic resonance coil 100 forms a signal receiving coil, and uses the signal receiving coil to receive the magnetic resonance signal of the second type of nuclide.

[0122] In the embodiment of the present disclosure, the transceiver conversion switch of the third conductor rod 13 is a second transceiver conversion switch 134. After S202, the second transceiver conversion switch 134 is set to high resistance, and the nuclear magnetic resonance coil 100 can be converted from a radio frequency field generating coil to a signal receiving coil. At this time, the nuclear magnetic resonance coil 100 is capable of receiving the magnetic resonance signal of the second type of nuclide, and can transmit the magnetic resonance signal of the second type of nuclide to the data processor 403.

[0123] Combination Fig.12As shown, the embodiment of the present disclosure provides a controller 402, and the controller 4020 includes a processor (processor) 4021 and a memory (memory) 4022. Optionally, the controller 4020 may also include a communication interface (Communication Interface) 4023 and a bus 4024. Among them, the processor 4021, the communication interface 4023, and the memory 4022 can communicate with each other through the bus 4024. The communication interface 4023 can be used for information transmission. The processor 4021 can call the logic instructions in the memory 4022 to execute the GPU resource scheduling method of the above embodiment.

[0124] In addition, the logic instructions in the memory 4022 described above can be implemented in the form of software functional units and can be stored in a computer-readable storage medium when sold or used as an independent product.

[0125] The memory 4022 is a computer-readable storage medium that can be used to store software programs and computer executable programs, such as program instructions / modules corresponding to the method in the embodiment of the present disclosure. The processor 4021 executes the function application and data processing by running the program instructions / modules stored in the memory 4022, that is, the GPU resource scheduling method in the above embodiment is implemented.

[0126] The memory 4022 may include a program storage area and a data storage area, wherein the program storage area may store an operating system and an application required for at least one function; the data storage area may store data created according to the use of the terminal device, etc. In addition, the memory 4022 may include a high-speed random access memory and may also include a non-volatile memory.

[0127] An embodiment of the present disclosure provides a computer-readable storage medium storing computer-executable instructions, wherein the computer-executable instructions are configured to execute the above-mentioned GPU resource scheduling method.

[0128] The technical solution of the embodiment of the present disclosure can be embodied in the form of a software product, which is stored in a storage medium and includes one or more instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method described in the embodiment of the present disclosure. The aforementioned storage medium may be a non-transient storage medium, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, and other media that can store program codes.

[0129] The above description and the accompanying drawings fully illustrate the embodiments of the present disclosure so that those skilled in the art can practice them. Other embodiments may include structural, logical, electrical, process and other changes. The embodiments represent only possible changes. Unless explicitly required, separate components and functions are optional, and the order of operation may vary. The parts and features of some embodiments may be included in or replace the parts and features of other embodiments. Moreover, the words used in this application are only used to describe the embodiments and are not used to limit the claims. As used in the description of the embodiments and the claims, unless the context clearly indicates, the singular forms of "a", "an" and "the" are intended to include plural forms as well. Similarly, the term "and / or" as used in this application refers to any and all possible combinations of listings containing one or more associated ones. In addition, when used in the present application, the term "comprise" and its variants "comprises" and / or comprising refer to the presence of stated features, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or groups thereof. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the presence of other identical elements in the process, method or device comprising the elements. In this article, each embodiment may focus on the differences from other embodiments, and the same and similar parts between the various embodiments may refer to each other. For the methods, products, etc. disclosed in the embodiments, if they correspond to the method part disclosed in the embodiments, then the relevant parts can refer to the description of the method part.

[0130] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software may depend on the specific application and design constraints of the technical solution. The technicians may use different methods for each specific application to implement the described functions, but such implementations should not be considered to exceed the scope of the embodiments of the present disclosure. The technicians may clearly understand that, for the convenience and simplicity of description, the specific working processes of the systems, devices and units described above may refer to the corresponding processes in the aforementioned method embodiments, and will not be repeated here.

[0131] In the embodiments disclosed herein, the disclosed methods and products (including but not limited to devices, equipment, etc.) can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units can be only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between each other shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms. The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to implement this embodiment. In addition, each functional unit in the embodiment of the present disclosure may be integrated in a processing unit, or each unit may exist physically alone, or two or more units may be integrated in one unit.

[0132] The flowchart and block diagram in the accompanying drawings show the possible architecture, function and operation of the system, method and computer program product according to the embodiment of the present disclosure. In this regard, each box in the flowchart or block diagram can represent a module, a program segment or a part of the code, and the module, the program segment or a part of the code contains one or more executable instructions for realizing the specified logical function. In some alternative implementations, the functions marked in the box can also occur in a different order from the order marked in the accompanying drawings. For example, two consecutive boxes can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. In the description corresponding to the flowchart and the block diagram in the accompanying drawings, the operations or steps corresponding to different boxes can also occur in a different order from the order disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps can actually be executed substantially in parallel, and they can sometimes be executed in the opposite order, which can depend on the functions involved. Each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, may be implemented by a dedicated hardware-based system that performs the specified functions or actions, or may be implemented by a combination of dedicated hardware and computer instructions.

Claims

1. A nuclear magnetic resonance coil, characterized in that: include: A plurality of conductor branches, the conductor branches include a first conductor rod, a second conductor rod, a third conductor rod and a line switch, and the first ends of the first conductor rod, the second conductor rod and the third conductor rod are all connected to the line switch; A first conductor ring, wherein the second ends of the first conductor rods of the conductor branches are distributed around the first conductor ring and connected to the first conductor ring; A second conductor ring, wherein the second ends of the second conductor rods of the conductor branches are distributed around the second conductor ring and connected to the second conductor ring; A third conductor ring, wherein the second ends of the third conductor rods of the respective conductor branches are distributed around the third conductor ring and are connected to the third conductor ring; The line switching switch is configured to: connect the first conductor rod and the second conductor rod in each conductor branch to convert the nuclear magnetic resonance coil into a magnetic resonance signal amplification coil for the first type of nuclear species; and / or connect the first conductor rod and the third conductor rod in each conductor branch to convert the nuclear magnetic resonance coil into a radio frequency field generating coil for the second type of nuclear species.

2. The nuclear magnetic resonance coil according to claim 1, characterized in that: The first conductor ring is provided with a plurality of first capacitors, each of which is distributed around the first conductor ring, and the second end of the first conductor rod of each conductor branch is connected to the first conductor ring and is located between two adjacent first capacitors; The second conductor ring is provided with a plurality of first wave trap modules and second capacitors, each second capacitor is distributed around the second conductor ring, and the second end of the second conductor rod of each conductor branch is connected to the second conductor ring and is located between two adjacent second capacitors; The third conductor ring is provided with a plurality of second wave trap modules and third capacitors, each third capacitor is distributed around the third conductor ring, and the second end of the third conductor rod of each conductor branch is connected to the third conductor ring and is located between two adjacent third capacitors.

3. The nuclear magnetic resonance coil according to claim 1, characterized in that: The second conductor rod is provided with a third trap module and a first transceiver conversion switch; The third conductor rod is provided with a fourth trap module and a second transceiver conversion switch.

4. The nuclear magnetic resonance coil according to claim 3, characterized in that: The third conductor rod is provided with a frequency selection module.

5. The nuclear magnetic resonance coil according to any one of claims 1 to 4, characterized in that: The first conductive ring, the second conductive ring and the third conductive ring are coaxially arranged. In the axial direction, the first conductive ring is on one side of the plurality of conductor branches, and the second conductive ring and the third conductive ring are on the other side of the plurality of conductor branches.

6. The nuclear magnetic resonance coil according to claim 5, characterized in that: The first conductive ring and the second conductive ring have the same diameter, and the third conductive ring has a smaller diameter than the second conductive ring.

7. The nuclear magnetic resonance coil according to claim 6, characterized in that: The second conductive ring and the third conductive ring are coplanar.

8. A nuclear magnetic resonance module, characterized in that: The invention comprises a surface receiving coil and a nuclear magnetic resonance coil as claimed in any one of claims 1 to 7, wherein the surface receiving coil is arranged inside the nuclear magnetic resonance coil.

9. A nuclear magnetic resonance device, characterized in that: The invention comprises a control module, a magnet, a gradient coil, a body coil, and a nuclear magnetic resonance module as claimed in claim 8; The nuclear magnetic resonance module is arranged inside the body coil, and the gradient coil, the body coil and the nuclear magnetic resonance module are all connected to the control module.

10. A method for controlling a nuclear magnetic resonance device, characterized in that: include: The control module controls the general coil to generate a radio frequency field of the first type of nuclide, controls the circuit switching switch to connect the first conductor rod and the second conductor rod in each conductor branch of the nuclear magnetic resonance coil to form a magnetic resonance signal amplifying coil for the first type of nuclide, and uses the magnetic resonance signal amplifying coil to amplify the magnetic resonance signal of the first type of nuclide; and / or, controlling the circuit switching switch to connect the first conductor rod and the third conductor rod of each conductor branch of the nuclear magnetic resonance coil to form a radio frequency field generating coil for the second type of nuclide, using the radio frequency field generating coil to generate a radio frequency field of the second type of nuclide, and using the surface receiving coil to receive the magnetic resonance signal of the second type of nuclide; And / or, the control circuit switching switch connects the first conductor rod and the third conductor rod of each conductor branch of the nuclear magnetic resonance coil to form a radio frequency field generating coil for the second type of nuclide, and the radio frequency field generating coil is used to generate the radio frequency field of the second type of nuclide; the transmit-receive conversion switch of the third conductor rod is set to high resistance failure, so that the nuclear magnetic resonance coil forms a signal receiving coil, and the signal receiving coil is used to receive the magnetic resonance signal of the second type of nuclide.

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