Coil device for medical scanning system, medical scanning system and imaging method

Abstract

The present invention relates to a coil device for a medical scanning system, a medical scanning system and an imaging method. The coil device includes a body transmitting coil and an imaging adjustment module; the imaging adjustment module includes a driving part and a transmission part, and the driving part can drive the body transmitting coil to rotate relative to the main magnet through the transmission part to adjust the position of the imaging non-uniform area of ​​the scanned image. In the above coil device, the driving part of the imaging adjustment module can drive the body transmitting coil to rotate relative to the main magnet through the transmission part to adjust the position of the imaging non-uniform area of ​​the scanned image, so that the scanning image at the first imaging and the scanning image at the second imaging can be composited to obtain a more perfect image effect. The coil device has a simple structure and is easy to operate, and does not require the person being tested to make any body position changes during the rotation of the body transmitting coil and during the second imaging.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular to a coil device for a medical scanning system, a medical scanning system and an imaging method. Background Art

[0002] In the traditional magnetic resonance imaging (MRI) system, the body transmitting coil is installed in the main magnet as the RF front end of the MRI system, responsible for sending and receiving MRI signals. The body transmitting coil can generally be composed of metal rings at both ends, a certain number of metal legs in the middle, and a series of loading capacitors to form a birdcage-like structure. The birdcage-shaped body transmitting coil can generate a sufficiently uniform RF circular polarization field to stimulate nuclear resonance. Although the RF circular polarization field formed by the birdcage-shaped body transmitting coil is roughly uniform, the local position of the patient will still be poorly scanned during clinical imaging due to the unevenness of the local position. At present, the above-mentioned scanned images are usually processed by adjusting the parameters of the MRI system or increasing the contrast of the scanned image, but it still cannot effectively solve the problem of poor imaging effect of the scanned image. Summary of the invention

[0003] Based on this, it is necessary to provide a coil device, a medical scanning system and an imaging method for a medical scanning system, as the scanning image processing method adopted in the prior art still cannot effectively solve the technical problem of poor imaging effect of the scanning image.

[0004] A coil device for a medical scanning system, the coil device comprising a body transmission coil and an imaging adjustment module;

[0005] The imaging adjustment module includes a driving part and a transmission part. The driving part can drive the body transmitting coil to rotate relative to the main magnet through the transmission part to adjust the position of the imaging non-uniform area of ​​the scanned image.

[0006] In one embodiment, the driving part is a reciprocating linear motion mechanism, and the transmission part is a crank-connecting rod mechanism.

[0007] In one embodiment, the driving unit includes a motor and a driving wheel disposed on an output shaft of the motor;

[0008] The body transmitting coil is provided with rotating teeth, and the transmission part is meshed with the rotating teeth and the driving wheel.

[0009] In one embodiment, the transmission part includes a transmission belt, and the transmission belt is tensioned between the driving wheel and the rotating teeth.

[0010] In one embodiment, the transmission part further comprises a driving wheel and a driving wheel coaxially arranged on the driving wheel, and the driving wheel and / or the driving wheel are rotatably arranged on the main magnet;

[0011] The transmission belt is tensioned between the driving wheel and the active wheel, and the rotating teeth are meshed with the driving wheel.

[0012] In one of the embodiments, the coil device further comprises a linkage portion, wherein the linkage portion comprises at least three linkage wheels, and the linkage wheels are rotatably disposed on the end surface of the main magnet and mesh with the rotating teeth.

[0013] In one embodiment, the linkage portion further includes a linkage belt, and the linkage belt is tensioned between the linkage wheel and the driving wheel.

[0014] In one of the embodiments, the coil device further comprises a tensioning portion, wherein the tensioning portion comprises at least one tensioning wheel, wherein the tensioning wheel is disposed on an end surface of the main magnet and is used to press the linkage belt toward the body transmitting coil.

[0015] In one of the embodiments, the tensioning portion further comprises a mounting platform disposed on the end surface of the main magnet, and the tensioning wheel is mounted on the mounting platform via a wheel frame, wherein the wheel frame has a plurality of mounting positions distributed along the radial direction of the main magnet.

[0016] In one embodiment, the wheel frame has a mounting strip hole extending radially along the main magnet, and the wheel frame is connected to the mounting platform through the mounting strip hole.

[0017] In one embodiment, the number of the rotating teeth is 2 and the rotating teeth are respectively arranged on the front and rear ends of the body transmitting coil, the number of the linkage parts is 2 and the linkage parts are respectively arranged on the front and rear end surfaces of the main magnet;

[0018] The number of the driving part and the number of the transmission part are both one, and the driving part is used to drive the rotating teeth at the front end or the rear end to rotate.

[0019] In the coil device for medical scanning system, the driving part of the imaging adjustment module can drive the body transmitting coil to rotate relative to the main magnet through the transmission part to adjust the position of the imaging non-uniform area of ​​the scanned image, so that the scanning image at the time of the first imaging and the scanning image at the time of the second imaging can be composited to obtain a more perfect image effect. The coil device has a simple structure and is easy to operate, and the person being tested does not need to change his body position during the rotation of the body transmitting coil and during the second imaging.

[0020] A medical scanning system, comprising a main magnet and any one of the coil devices described above;

[0021] The main magnet surrounds to form a cavity, the body transmitting coil of the coil device is located in the cavity, and the imaging adjustment module of the coil device is connected to the main magnet and the body transmitting coil.

[0022] In one embodiment, the medical scanning system further comprises a control module electrically connected to the driving part of the imaging adjustment module (10);

[0023] The control module is used to control the driving unit to drive the body transmitting coil to rotate relative to the main magnet after the medical scanning system has performed an initial imaging operation.

[0024] In one of the embodiments, the medical scanning system further comprises a detection module electrically connected to the control module, the detection module being used to find and send to the control module the position of the imaging non-uniform area and the position of the imaging optimal area of ​​the scanned image after the medical scanning system has first imaged;

[0025] The control module determines the rotation angle of the body transmit coil relative to the main magnet based on the position of the imaging non-uniform area and the position of the imaging optimal area of ​​the scanning image, so that the imaging non-uniform area of ​​the scanning image during re-imaging coincides with the imaging optimal area of ​​the scanning image during first imaging.

[0026] In the above-mentioned medical scanning system, the driving part of the imaging adjustment module can drive the body transmitting coil to rotate relative to the main magnet through the transmission part to adjust the position of the imaging non-uniform area of ​​the scanned image, so that the scanning image at the time of the first imaging and the scanning image at the time of the second imaging can be composited to obtain a more perfect image effect. The medical scanning system has a simple structure and is easy to operate, and the person being tested does not need to make any body position changes during the rotation of the body transmitting coil and during the second imaging.

[0027] An imaging method of a medical scanning system, the imaging method comprising:

[0028] After the first imaging, the driver transmits the coil to rotate relative to the main magnet to adjust the position of the imaging non-uniform area of ​​the scanned image;

[0029] Imaging is performed again, and then the scanned image during the first imaging is combined with the scanned image during the second imaging.

[0030] In one embodiment, before the driving transmitting coil rotates relative to the main magnet, the imaging method further includes:

[0031] After the first imaging, finding the position of the imaging non-uniform area and the position of the imaging best area of ​​the scanned image;

[0032] Based on the position of the imaging non-uniform area and the position of the imaging optimal area of ​​the scanning image, the angle of rotation of the body transmission coil relative to the main magnet is determined so that the imaging non-uniform area of ​​the scanning image during re-imaging coincides with the imaging optimal area of ​​the scanning image during first imaging.

[0033] The imaging method of the medical imaging system can drive the body transmitting coil to rotate relative to the main magnet after the first imaging to adjust the position of the imaging non-uniform area of ​​the scanned image, so that the scanned image at the first imaging and the scanned image at the second imaging can be composited to obtain a more perfect image effect. The imaging method of the medical scanning system is easy to operate, and the person being tested does not need to change his or her body position during the rotation of the body transmitting coil and during the second imaging. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of a medical scanning system provided by an embodiment of the present invention;

[0035] Figure 2 A schematic diagram of the structure of an imaging adjustment module provided in another embodiment of the present invention;

[0036] Figure 3 A schematic diagram of a radio frequency circular polarization field of a body transmitting coil provided in one embodiment of the present invention;

[0037] Figure 4 A schematic diagram of the image compounding principle of a medical imaging system provided by an embodiment of the present invention;

[0038] Figure 5 A side view of a medical scanning system provided by an embodiment of the present invention;

[0039] Figure 6 A schematic diagram of the structure of a body transmitting coil provided in one embodiment of the present invention;

[0040] Figure 7 A schematic structural diagram of a tensioning portion provided in one embodiment of the present invention.

[0041] The reference numerals in the accompanying drawings are described as follows:

[0042] 10. Imaging adjustment module; 100. Driving unit; 110. Motor; 120. Driving wheel; 200. Transmission unit; 210. Transmission belt; 220. Driving wheel; 230. Driving wheel; 240. First transmission rod; 250. Second transmission rod; 300. Linkage unit; 310. Linkage wheel; 320. Linkage belt; 400. Tensioning unit; 410. Tensioning wheel; 420. Wheel frame; 420a. Mounting strip hole; 510. First rotating shaft; 520. Second rotating shaft; 600. Support unit; 20. Transmitting coil; 20a. Rotating teeth; 30. Main magnet; 30a. Mounting platform. DETAILED DESCRIPTION

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0045] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0048] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0049] like Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a coil device for a medical scanning system, which includes a body transmitting coil 20 and an imaging adjustment module 10; the imaging adjustment module 10 includes a driving unit 100 and a transmission unit 200, and the driving unit 100 can drive the body transmitting coil 20 to rotate relative to the main magnet 30 through the transmission unit 200 to adjust the position of the imaging non-uniform area of ​​the scanned image.

[0050] As an example, Figure 1 and Figure 2 As shown, the medical scanning system further includes a main magnet 30, which is surrounded by a cavity, and the body transmitting coil 20 is located in the cavity. It can be understood that in order to realize that the body transmitting coil 20 can rotate relative to the main magnet 30, the body transmitting coil 20 is not fixed to the main magnet 30, which is different from the installation method of the body transmitting coil 20 in the prior art.

[0051] The medical scanning system in this article includes but is not limited to a magnetic resonance system. The structure and working principle of the medical scanning system are described below using a magnetic resonance system as an example.

[0052] Among them Figure 3 As shown, the RF circular polarization field excited by the body transmitting coil 20 generally includes a uniform RF circular polarization field region and a non-uniform RF circular polarization field region, wherein the region corresponding to the uniform RF circular polarization field region in the scanning image of the magnetic resonance system is called an imaging uniform region, and the region corresponding to the non-uniform RF circular polarization field region is called an imaging non-uniform region, and the image effect of the imaging uniform region is greater than the image effect of the imaging non-uniform region.

[0053] In the coil device for medical scanning system as described above, the body transmitting coil 20 does not rotate relative to the main magnet 30 during the first imaging. At this time, the imaging non-uniform area of ​​the scanned image is Figure 4 The non-circular area circled by the dotted line in the upper left figure; after the first imaging, the driving unit 100 of the imaging adjustment module 10 drives the body transmitting coil 20 to rotate relative to the main magnet 30 through the transmission unit 200; then, imaging is performed again, and the imaging non-uniform area of ​​the scanned image is adjusted to Figure 4 The non-circular area circled by the dotted line in the upper middle right picture; then the scanned image at the first imaging and the scanned image at the second imaging are composited, which can be specifically, the imaging uniform area at the second imaging covers the imaging non-uniform area at the first imaging, and the imaging uniform area at the first imaging covers the imaging non-uniform area at the second imaging, so that a more perfect image effect can be obtained.

[0054] It can be seen that in the coil device for a medical scanning system provided by the present application, the driving unit 100 of the imaging adjustment module 10 can drive the body transmitting coil 20 to rotate relative to the main magnet 30 through the transmission unit 200 to adjust the position of the imaging non-uniform area of ​​the scanned image, so that the scanning image at the time of the first imaging and the scanning image at the time of the second imaging can be composited to obtain a more perfect image effect. The coil device has a simple structure and is easy to operate, and the person being tested does not need to make any body position changes during the rotation of the body transmitting coil 20 and during the second imaging.

[0055] Regarding how the driving unit 100 drives the body transmitting coil 20 to rotate through the transmission unit 200, the embodiment of the present invention provides two methods:

[0056] The first method is as follows: Figure 2 As shown, the driving part 100 is a reciprocating linear motion mechanism, and the transmission part 200 is a crank connecting rod mechanism. When the driving part 100 is performing reciprocating linear motion, the transmission part 200 converts the linear motion transmitted by the driving part 100 into rotational motion, thereby driving the body transmitting coil 20 to rotate.

[0057] Optionally, the number of the driving unit 100 and the transmission unit 200 can be two, one driving unit 100 drives the front end of the body transmitting coil 20 to rotate through the corresponding transmission unit 200, and one driving unit 100 drives the rear end of the body transmitting coil 20 to rotate through the corresponding transmission unit 200. In this way, it can be ensured that the driving unit 100 can effectively drive the body transmitting coil 20 to rotate.

[0058] Optionally, the driving unit 100 may be a hydraulic cylinder; Figure 2 As shown, the transmission part 200 includes a first transmission rod 240 and a second transmission rod 250. The first end of the first transmission rod 240 is hinged to the piston rod of the hydraulic cylinder, and the second end of the first transmission rod 240 is hinged to the first end of the second transmission rod 250. The second transmission rod 250 can rotate around its second end and the second end of the second transmission rod 250 is fixedly connected to the body transmitting coil 20. The first end and the second end of the first transmission rod 240 are relatively distributed, and the first end and the second end of the second transmission rod 250 are relatively distributed. It should be noted that Figure 2 The double arrow in denoted represents the reciprocating linear motion direction of the driving unit 100 .

[0059] When the hydraulic cylinder pushes its piston rod to make reciprocating linear motion, the first transmission rod 240 rotates around the connection with the piston rod, thereby driving the second transmission rod 250 to rotate around its second end, and the body transmitting coil 20 also rotates under the drive of the second transmission rod 250. The end surface of the main magnet 30 may be provided with a support portion 600 (see Figure 2 ), the support part 600 has a support hole; a rotating shaft is arranged on the second end of the second transmission rod 250, the first end of the rotating shaft is rotatably arranged in the support hole, and the second end of the rotating shaft is connected to the center of the body transmitting coil 20, wherein the first end and the second end of the rotating shaft are relatively distributed. The support part 600 can ensure that the second transmission rod 250 rotates smoothly.

[0060] The second method is as follows: Figure 1 and Figure 5 As shown, the driving unit 100 includes a motor 110 and a driving wheel 120 disposed on the output shaft of the motor 110; the body transmitting coil 20 is provided with rotating teeth 20a, and the transmission unit 200 meshes with the rotating teeth 20a and the driving wheel 120. The rotation of the body transmitting coil 20 is achieved by tooth matching, and the tooth matching method has the characteristic of small operating space, which can make the internal structure of the magnetic resonance system more compact.

[0061] Optionally, the motor 110 may be installed on the end surface of the main magnet 30 , or on a scanning cylinder of the magnetic resonance system, or on the ground.

[0062] Optionally, the driving wheel 120 may be mounted on the output shaft of the motor 110 by welding, interference fit, or the like.

[0063] Optionally, the rotating teeth 20a can be directly formed on the curved surface of the body transmitting coil 20, or connected to the body transmitting coil 20 by welding or other methods.

[0064] Further, in some embodiments of the present invention, Figure 1 and Figure 5 As shown, the transmission part 200 includes a transmission belt 210, and the transmission belt 210 is stretched between the driving wheel 120 and the rotating teeth 20a. It should be noted that the transmission belt 210 is provided with teeth that match the driving wheel 120 and the rotating teeth 20a. When the motor 110 is started, the transmission belt 210 moves around the driving wheel 120 under the drive of the driving wheel 120 on the output shaft of the motor 110, thereby driving the rotating teeth 20a to rotate, so that the body transmitting coil 20 also rotates. Compared with other transmission structures (such as transmission gears), the transmission belt 210 has the characteristics of small size and light weight.

[0065] Furthermore, in some embodiments of the present invention, Figure 1 and Figure 5 As shown, the transmission part 200 also includes a driving wheel 220 and a driving wheel 230 coaxially arranged on the driving wheel 220. The driving wheel 220 and / or the driving wheel 230 are rotatably arranged on the main magnet 30; the transmission belt 210 is stretched between the driving wheel 120 and the driving wheel 220, and the rotating teeth 20a are meshed with the driving wheel 230. The arrangement of the driving wheel 220 and the driving wheel 230 can increase the transmission efficiency. When the motor 110 is started, the transmission belt 210 moves around the driving wheel 120 and the driving wheel 220 under the drive of the driving wheel 120 on the output shaft of the motor 110, thereby driving the driving wheel 220 to rotate, and the driving wheel 220 drives the driving wheel 230 to rotate together, and the driving wheel 230 also drives the rotating teeth 20a to rotate, so that the body transmitting coil 20 also rotates.

[0066] Optionally, the driving wheel 230 is disposed on the driving wheel 220 by welding, integral molding, etc., and the driving wheel 220 and the driving wheel 230 can be installed on the end surface of the main magnet 30 through the first rotating shaft 510 .

[0067] Regarding the positional relationship between the driving wheel 220 and the driving wheel 230, the driving wheel 220 can be set between the end surface of the main magnet 30 and the driving wheel 230. In this case, the diameter of the driving wheel 230 can be less than, equal to or greater than the diameter of the driving wheel 220; or, the driving wheel 230 can be set between the end surface of the main magnet 30 and the driving wheel 220. In this case, the diameter of the driving wheel 230 needs to be smaller than the diameter of the driving wheel 220.

[0068] Under the premise that the transmission part 200 further includes a driving wheel 230, in some embodiments of the present invention, Figure 1 and Figure 5 As shown, the coil device further includes a linkage part 300, and the linkage part 300 includes at least three linkage wheels 310. The linkage wheels 310 are rotatably arranged on the end surface of the main magnet 30 and mesh with the rotating teeth 20a. In the process of the rotating teeth 20a driving the body transmitting coil 20 to rotate, the linkage wheels 310 also rotate with the rotating teeth 20a due to meshing with the rotating teeth 20a, and can support the body transmitting coil 20 without affecting the rotation of the rotating teeth 20a.

[0069] The number of the linkage wheels 310 may be 3, 4, 5 or more, and the embodiment of the present invention does not impose any specific restrictions, as long as the body transmitting coil 20 can be firmly supported in the cavity of the main magnet 30. In addition, the arrangement positions of the linkage wheels 310 may be evenly distributed along the circumference of the rotating teeth 20a together with the driving wheels 230, and the embodiment of the present invention does not impose any specific restrictions, as long as the body transmitting coil 20 can be firmly supported in the cavity of the main magnet 30.

[0070] Optionally, the linkage wheel 310 is rotatably disposed on the end surface of the main magnet 30 via a second rotating shaft 520 .

[0071] Specifically in some embodiments of the present invention, Figure 6 As shown, the number of rotating teeth 20a is 2 and the rotating teeth 20a are respectively arranged on the front and rear ends of the body transmitting coil 20, the number of linkage parts 300 is 2 and the linkage parts 300 are respectively arranged on the front and rear end surfaces of the main magnet 30; the number of driving parts 100 and transmission parts 200 are both 1, and the driving part 100 is used to drive the rotating teeth 20a at the front or rear end to rotate. In this way, the body transmitting coil 20 can be ensured to rotate smoothly, the structure of the imaging adjustment module 10 can be simplified, and the energy-saving effect can also be achieved.

[0072] Further, in some embodiments of the present invention, Figure 1 and Figure 5 As shown, the linkage part 300 also includes a linkage belt 320, and the linkage belt 320 is stretched between the linkage wheel 310 and the driving wheel 230. It should be noted that the linkage belt 320 is provided with teeth that match the linkage wheel 310 and the driving wheel 230. During the rotation of the driving wheel 230, the linkage belt 320 moves around the driving wheel 230 and the linkage wheel 310 under the drive of the driving wheel 230, thereby driving the linkage wheel 310 to rotate, so that the linkage wheel 310 also applies a rotational force to the rotating tooth 20a together with the driving wheel 230, so that the body transmitting coil 20 rotates more smoothly.

[0073] Furthermore, in some embodiments of the present invention, Figure 1 and Figure 5 As shown, the coil device further includes a tensioning part 400, and the tensioning part 400 includes at least one tensioning wheel 410, which is arranged on the end surface of the main magnet 30 and is used to press the linkage belt 320 toward the body transmitting coil 20. The tensioning wheel 410 can keep a certain tension of the linkage belt 320 by pressing the linkage belt 320, so that the linkage belt 320 can better drive the linkage wheel 310 to rotate under the drive of the driving wheel 230.

[0074] The number of the tensioning wheels 410 can be 1, 2, 3 or more, and the embodiment of the present invention does not impose any specific restrictions, as long as the linkage belt 320 can be effectively tensioned. The location of the tensioning wheel 410 can be close to the driving wheel 230 or close to the linkage wheel 310, and the embodiment of the present invention does not impose any specific restrictions, as long as the linkage belt 320 can be effectively tensioned.

[0075] Optionally, the tension wheel 410 can rotate, which can reduce the rolling friction between the tension wheel 410 and the linkage belt 320 and increase the service life of the tension wheel 410 and the linkage belt 320.

[0076] Alternatively, if Figure 1 and Figure 5 As shown, the tensioning part 400 also includes a mounting platform 30a arranged on the end surface of the main magnet 30, and the tensioning wheel 410 is mounted on the mounting platform 30a through the wheel frame 420, wherein the wheel frame 420 has a plurality of mounting positions distributed along the radial direction of the main magnet 30. The tensioning wheel 410 can select the corresponding mounting position on the wheel frame 420 according to the tension of the linkage belt 320 to realize the assembly of the wheel frame 420 and the mounting platform 30a. For example, if the tension of the linkage belt 320 is too large, the mounting position close to the rotating tooth 20a can be selected to realize the assembly of the wheel frame 420 and the mounting platform 30a. For another example, if the tension of the linkage belt 320 is too small, the mounting position far away from the rotating tooth 20a can be selected to realize the assembly of the wheel frame 420 and the mounting platform 30a.

[0077] Specifically, Figure 7 As shown, the wheel frame 420 has a mounting bar hole 420a extending in the radial direction of the main magnet 30, and the wheel frame 420 is connected to the mounting platform 30a through the mounting bar hole 420a. It can be understood that the mounting bar hole 420a has a plurality of continuous mounting positions, so that the tensioning wheel 410 can adjust the tension of the linkage belt 320 more reasonably.

[0078] like Figure 1As shown, another embodiment of the present invention provides a medical scanning system, which includes a main magnet 30 and any of the coil devices described above; the main magnet 30 surrounds to form a cavity, the body transmitting coil 20 of the coil device is located in the cavity, and the imaging adjustment module 10 of the coil device is connected to the main magnet 30 and the body transmitting coil 20.

[0079] In the above-mentioned medical scanning system, the driving unit 100 of the imaging adjustment module 10 can drive the body transmitting coil 20 to rotate relative to the main magnet 30 through the transmission unit 200 to adjust the position of the imaging non-uniform area of ​​the scanned image, so that the scanning image at the time of the first imaging and the scanning image at the time of the second imaging can be composited to obtain a more perfect image effect. The medical scanning system has a simple structure and is easy to operate, and the person being tested does not need to change his body position during the rotation of the body transmitting coil 20 and during the second imaging.

[0080] In some embodiments of the present invention, the medical scanning system further comprises a control module electrically connected to the driving unit 100 of the imaging adjustment module 10; the control module is used to control the driving unit 100 to drive the body transmitting coil 20 to rotate relative to the main magnet 30 after the medical scanning system performs imaging for the first time. The control module can improve the automation degree of the medical scanning system for image processing. The control module can be a DDC (Direct Digital Control) controller.

[0081] Furthermore, in some embodiments of the present invention, the medical scanning system further includes a detection module electrically connected to the control module, the detection module is used to find and send the position of the imaging non-uniform area and the position of the imaging best area of ​​the scanned image to the control module after the first imaging of the medical scanning system; the control module determines the rotation angle of the body transmitting coil 20 relative to the main magnet 30 based on the position of the imaging non-uniform area and the position of the imaging best area of ​​the scanned image, so that the imaging non-uniform area of ​​the scanned image at the time of re-imaging coincides with the imaging best area of ​​the scanned image at the time of first imaging. In this way, when the scanned image at the time of first imaging and the scanned image at the time of re-imaging are compositely processed, the imaging uniform area at the time of re-imaging can cover the imaging non-uniform area at the time of first imaging, and the imaging uniform area at the time of first imaging can cover the imaging non-uniform area at the time of re-imaging, so that a more perfect image effect can be obtained. It should be noted that the imaging best uniform area of ​​the scanned image can be understood as the area with the highest signal-to-noise ratio.

[0082] Another embodiment of the present invention provides an imaging method of the medical scanning system described above, the imaging method comprising:

[0083] Step S100, first imaging, after which the driver transmitting coil 20 rotates relative to the main magnet 30 to adjust the position of the imaging non-uniform area of ​​the scanned image;

[0084] Step S200 , imaging again, and then combining the scanned image at the time of the first imaging with the scanned image at the time of the second imaging.

[0085] The imaging method of the medical scanning system provided in the present application can drive the body transmitting coil 20 to rotate relative to the main magnet 30 after the first imaging to adjust the position of the imaging non-uniform area of ​​the scanned image, so that the scanning image at the first imaging and the scanning image at the second imaging can be composited to obtain a more perfect image effect. The imaging method of the medical scanning system is easy to operate, and the person being tested does not need to change his body position during the rotation of the body transmitting coil 20 and during the second imaging.

[0086] When the driving body transmitting coil 20 rotates relative to the main magnet 30, the imaging method further includes:

[0087] Step S300, after the first imaging, finding the position of the imaging non-uniform area and the position of the imaging best area of ​​the scanned image;

[0088] Step S400: Based on the position of the imaging non-uniform area and the position of the imaging optimal area of ​​the scanned image, determine the rotation angle of the body transmitting coil 20 relative to the main magnet 30, so that the imaging non-uniform area of ​​the scanned image during the second imaging coincides with the imaging optimal area of ​​the scanned image during the first imaging.

[0089] In this way, when the scanned image at the first imaging and the scanned image at the second imaging are composited, the uniform imaging area at the second imaging can cover the non-uniform imaging area at the first imaging, and the uniform imaging area at the first imaging can cover the non-uniform imaging area at the second imaging, so that a more perfect image effect can be obtained.

[0090] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described 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.

[0091] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A coil device for a medical scanning system, characterized in that: The coil device comprises a body transmitting coil (20) and an imaging adjustment module (10); The imaging adjustment module (10) comprises a driving unit (100) and a transmission unit (200), wherein the driving unit (100) can drive the body transmitting coil (20) to rotate relative to the main magnet (30) through the transmission unit (200) to adjust the position of the imaging non-uniform area of ​​the scanned image; The driving unit (100) comprises a motor (110) and a driving wheel (120) arranged on an output shaft of the motor (110); The body transmitting coil (20) is provided with rotating teeth (20a), and the transmission part (200) is meshed with the rotating teeth (20a) and the driving wheel (120); The coil device further comprises a linkage part (300), wherein the linkage part (300) comprises at least three linkage wheels (310), wherein the linkage wheels (310) are rotatably arranged on the end surface of the main magnet (30) and mesh with the rotating teeth (20a); The linkage part (300) further comprises a linkage belt (320), wherein the linkage belt (320) is tensioned between the linkage wheel (310) and the driving wheel (230) of the transmission part (200).

2. The coil device according to claim 1, characterized in that The transmission part (200) comprises a transmission belt (210), and the transmission belt (210) is tensioned between the driving wheel (120) and the rotating teeth (20a).

3. The coil device according to claim 2, characterized in that The transmission part (200) further comprises a driving wheel (220) and a driving wheel (230) coaxially arranged on the driving wheel (220), wherein the driving wheel (220) and / or the driving wheel (230) are rotatably arranged on the main magnet (30); The transmission belt (210) is tensioned between the driving wheel (120) and the driving wheel (220), and the rotating teeth (20a) are meshed with the driving wheel (230).

4. The coil device according to claim 1, characterized in that The coil device also includes a tensioning portion (400), wherein the tensioning portion (400) includes at least one tensioning wheel (410), wherein the tensioning wheel (410) is arranged on the end surface of the main magnet (30) and is used to press the linkage belt (320) toward the body transmitting coil (20).

5. The coil device according to claim 4, characterized in that The tensioning portion (400) further comprises a mounting platform (30a) arranged on the end surface of the main magnet (30), and the tensioning wheel (410) is mounted on the mounting platform (30a) via a wheel frame (420), wherein the wheel frame (420) has a plurality of mounting positions distributed along the radial direction of the main magnet (30).

6. The coil device according to claim 5, characterized in that The wheel frame (420) has a mounting strip hole (420a) extending in the radial direction of the main magnet (30), and the wheel frame (420) is connected to the mounting platform (30a) through the mounting strip hole (420a).

7. The coil device according to claim 1, characterized in that The number of the rotating teeth (20a) is two and the rotating teeth (20a) are respectively arranged on the front and rear ends of the body transmitting coil (20); the number of the linkage parts (300) is two and the linkage parts (300) are respectively arranged on the front and rear end surfaces of the main magnet (30); The number of the driving part (100) and the number of the transmission part (200) are both one, and the driving part (100) is used to drive the rotating teeth (20a) at the front end or the rear end to rotate.

8. A medical scanning system, characterized in that: The medical scanning system comprises a main magnet (30) and a coil device according to any one of claims 1 to 7; The main magnet (30) surrounds and forms a cavity, a body transmitting coil (20) of the coil device is located in the cavity, and an imaging adjustment module (10) of the coil device is connected to the main magnet (30) and the body transmitting coil (20).

9. The medical scanning system according to claim 8, characterized in that: The medical scanning system further comprises a control module electrically connected to the driving unit (100) of the imaging adjustment module (10); The control module is used to control the driving unit (100) to drive the body transmitting coil (20) to rotate relative to the main magnet (30) after the medical scanning system performs imaging for the first time.

10. The medical scanning system according to claim 9, characterized in that: The medical scanning system further comprises a detection module electrically connected to the control module, the detection module being used to find and send to the control module the position of the imaging non-uniform area and the position of the imaging optimal area of ​​the scanned image after the medical scanning system has first imaged; The control module determines the rotation angle of the body transmitting coil (20) relative to the main magnet (30) based on the position of the imaging non-uniform area and the position of the imaging optimal area of ​​the scanning image, so that the imaging non-uniform area of ​​the scanning image during re-imaging coincides with the imaging optimal area of ​​the scanning image during first imaging.

11. An imaging method of a medical scanning system according to any one of claims 8 to 10, characterized in that: The imaging method comprises: After the first imaging, the driving body transmitting coil (20) is rotated relative to the main magnet (30) to adjust the position of the imaging non-uniform area of ​​the scanning image; Imaging is performed again, and then the scanned image during the first imaging is combined with the scanned image during the second imaging.

12. The imaging method according to claim 11, characterized in that: Before the driving transmitting coil (20) rotates relative to the main magnet (30), the imaging method further comprises: After the first imaging, finding the position of the imaging non-uniform area and the position of the imaging best area of ​​the scanned image; Based on the position of the imaging non-uniform area and the position of the imaging optimal area of ​​the scanning image, the angle of rotation of the body transmitting coil (20) relative to the main magnet (30) is determined so that the imaging non-uniform area of ​​the scanning image during re-imaging coincides with the imaging optimal area of ​​the scanning image during first imaging.

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