阅读说明：本技术 用于医疗扫描系统的线圈装置、医疗扫描系统及成像方法 (Coil device for medical scanning system, medical scanning system and imaging method ) 是由 钟继凡 于 2021-10-20 设计创作，主要内容包括：本发明涉及一种用于医疗扫描系统的线圈装置、医疗扫描系统及成像方法。该线圈装置包括体发射线圈以及成像调节模块；成像调节模块包括驱动部与传动部,驱动部能够通过传动部驱动体发射线圈相对于主磁体转动,以调整扫描图像的成像非均匀区域的位置。上述线圈装置,成像调节模块的驱动部可通过传动部来驱动体发射线圈相对于主磁体转动以调整扫描图像的成像非均匀区域的位置,如此可以将首次成像时的扫描图像与再次成像时的扫描图像进行复合处理,从而得到更加完美的图像效果。该线圈装置的结构简单、易操作,且在体发射线圈转动的过程中及再次成像时均不需要被检测人员进行任何体位变动。(The invention relates to a coil device for a medical scanning system, the medical scanning system and an imaging method. The coil device comprises a body transmitting coil and an imaging adjusting module; the imaging adjusting module comprises a driving part and a transmission part, wherein the driving part can drive the body transmitting coil to rotate relative to the main magnet through the transmission part so as to adjust the position of the imaging non-uniform area of the scanned image. According to the coil device, the driving part of the imaging adjusting module can drive the body transmitting coil to rotate relative to the main magnet through the transmission part so as to adjust the position of the imaging non-uniform area of the scanned image, so that the scanned image during primary imaging and the scanned image during secondary imaging can be subjected to composite processing, and a more perfect image effect is obtained. The coil device is simple in structure and easy to operate, and does not need any posture change of a detected person in the rotating process of the body transmitting coil and the secondary imaging process.)

1. A coil arrangement for a medical scanning system, characterized in that the coil arrangement comprises a body transmit coil (20) and an imaging adjustment module (10);

the imaging adjustment module (10) comprises a driving part (100) and a transmission part (200), wherein the driving part (100) can drive the body emission coil (20) to rotate relative to the main magnet (30) through the transmission part (200) so as to adjust the position of the imaging non-uniform region of the scanning image.

2. The coil device according to claim 1, wherein the driving part (100) is a reciprocating linear motion mechanism and the transmission part (200) is a crank link mechanism.

3. The coil device according to claim 1, wherein the driving portion (100) includes a motor (110) and a driving wheel (120) provided 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).

4. A coil arrangement according to claim 3, characterized in that the transmission part (200) comprises a transmission belt (210), the transmission belt (210) being tensioned between the drive wheel (120) and the rotating teeth (20 a).

5. The coil device according to claim 4, wherein the transmission part (200) further comprises 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) being 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).

6. The coil device according to claim 5, characterized in that it further comprises a linkage (300), said linkage (300) comprising at least 3 linkage wheels (310), said linkage wheels (310) being rotatably arranged on the end face of the main magnet (30) and being engaged with the rotating teeth (20 a).

7. The coil device according to claim 6, characterized in that the linkage (300) further comprises a linkage belt (320), the linkage belt (320) being tensioned between the linkage wheel (310) and the driving wheel (230).

8. The coil device according to claim 7, characterized in that the coil device further comprises a tensioning portion (400), the tensioning portion (400) comprising at least one tensioning wheel (410), the tensioning wheel (410) being provided on an end face of the main magnet (30) and being configured to press the linkage belt (320) towards the body firing coil (20).

9. The coil arrangement according to claim 8, characterized in that the tensioning part (400) further comprises a mounting platform (30a) arranged on the end face of the main magnet (30), the tensioning wheel (410) being mounted on the mounting platform (30a) by a wheel carrier (420), wherein the wheel carrier (420) has a plurality of mounting locations distributed in a radial direction of the main magnet (30).

10. The coil device according to claim 9, wherein the wheel carrier (420) has a mounting bar hole (420a) extending along a radial direction of the main magnet (30), and the wheel carrier (420) is connected to the mounting platform (30a) through the mounting bar hole (420 a).

11. The coil device according to claim 6, wherein the number of the rotating teeth (20a) is 2 and the rotating teeth (20a) are respectively provided on the front and rear ends of the body-emitting coil (20), the number of the interlocking parts (300) is 2 and the interlocking parts (300) are respectively provided on the front and rear end faces of the main magnet (30);

the number of the driving part (100) and the transmission part (200) is 1, and the driving part (100) is used for driving the rotating teeth (20a) at the front end or the rear end to rotate.

12. A medical scanning system, characterized in that it comprises a main magnet (30) and a coil arrangement according to any of claims 1-11;

the main magnet (30) surrounds to form a cavity, the body emission coil (20) of the coil device is positioned in the cavity, and the imaging adjusting module (10) of the coil device is connected with the main magnet (30) and the body emission coil (20).

13. The medical scanning system according to claim 12, further comprising a control module electrically connected to the drive (100) of the imaging adjustment module (10);

the control module is used for controlling the driving part (100) to drive the body emission coil (20) to rotate relative to the main magnet (30) after the medical scanning system is imaged for the first time.

14. The medical scanning system of claim 13, further comprising a detection module electrically connected to the control module, wherein the detection module is configured to search for and send to the control module a location of an imaging non-uniform region and a location of an imaging best region of the scanned image after a first imaging of the medical scanning system;

the control module determines the angle of rotation of the body transmitting coil (20) relative to the main magnet (30) based on the position of the imaging non-uniform region and the position of the imaging optimal region of the scanning image, so that the imaging non-uniform region of the scanning image when imaging again coincides with the imaging optimal region of the scanning image when imaging for the first time.

15. An imaging method of a medical scanning system as claimed in any one of claims 12 to 14, wherein the imaging method comprises:

first imaging, then driving the body transmit coil (20) to rotate relative to the main magnet (30) to adjust the position of the imaging non-uniform region of the scanned image;

and imaging again, and then compounding the scanning image during the first imaging with the scanning image during the second imaging.

16. The imaging method according to claim 15, characterized in that, before the rotating of the band body emission coil (20) with respect to the main magnet (30), it further comprises:

after the first imaging, searching the position of the imaging non-uniform area and the position of the imaging optimal area of the scanning image;

based on the position of the imaging non-uniform region of the scan image and the position of the imaging optimal region, the angle of rotation of the body transmitting coil (20) relative to the main magnet (30) is determined so that the imaging non-uniform region of the scan image at the time of re-imaging coincides with the imaging optimal region of the scan image at the time of first imaging.

Technical Field

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

Background

In a conventional magnetic resonance system (MRI) setup, a body transmit coil is mounted within the main magnet as the radio frequency front end of the magnetic resonance system, responsible for transmitting and receiving magnetic resonance signals. The body transmit coil may generally be formed of two end metal rings and a certain number of middle metal legs and a series of loading capacitors to form a birdcage-like structure. The birdcage-shaped structure of the body transmitting coil can generate a sufficiently uniform radio frequency circularly polarized field to excite nuclear resonance. Although the radio frequency circularly polarized field formed by the birdcage-shaped body transmitting coil is approximately uniform, the scanned image of the local position of the patient is poor due to the nonuniformity of the local position in the clinical imaging. At present, the parameters of the magnetic resonance system are usually adjusted or the contrast of the scanned image is increased to process the scanned image, but the problem of poor imaging effect of the scanned image still cannot be effectively solved.

Disclosure of Invention

Therefore, it is necessary to provide a coil device for a medical scanning system, a medical scanning system and an imaging method, aiming at the technical problem that the scanned image processing method adopted in the prior art still cannot effectively solve the problem of poor imaging effect of the scanned image.

A coil apparatus for a medical scanning system, the coil apparatus comprising a body transmit coil and an imaging adjustment module;

the imaging adjusting module comprises 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 so as to adjust the position of the imaging non-uniform region of the scanning image.

In one embodiment, the driving part is a reciprocating linear motion mechanism, and the transmission part is a crank-link mechanism.

In one embodiment, the driving part comprises a motor and a driving wheel arranged on an output shaft of the motor;

the body emission coil is provided with rotating teeth, and the transmission part is meshed with the rotating teeth and the driving wheel.

In one embodiment, the transmission portion includes a transmission belt tensioned between the driving wheel and the rotating teeth.

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 is/are rotatably arranged on the main magnet;

the transmission belt is tensioned between the driving wheel and the driving wheel, and the rotating teeth are meshed with the driving wheel.

In one embodiment, the coil device further comprises a linkage portion, and the linkage portion comprises at least 3 linkage wheels, and the linkage wheels are rotatably arranged on the end face of the main magnet and are meshed with the rotating teeth.

In one embodiment, the linkage portion further comprises a linkage belt, and the linkage belt is tensioned between the linkage wheel and the driving wheel.

In one embodiment, the coil device further comprises a tensioning portion including at least one tensioning wheel disposed on an end face of the main magnet and configured to press the interlocking belt toward the body-emission coil.

In one embodiment, the tensioning portion further includes a mounting platform disposed on the end face of the main magnet, and the tensioning wheel is mounted on the mounting platform by a wheel carrier, wherein the wheel carrier has a plurality of mounting locations distributed in a radial direction of the main magnet.

In one embodiment, the wheel carrier is provided with a mounting strip-shaped hole extending along the radial direction of the main magnet, and the wheel carrier is connected with the mounting platform through the mounting strip-shaped hole.

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

the number of the driving part and the number of the transmission part are all 1, and the driving part is used for driving the rotating teeth at the front end or the rear end to rotate.

According to the coil device for the medical scanning system, the driving part of the imaging adjusting module can drive the body emitting coil to rotate relative to the main magnet through the transmission part so as to adjust the position of the imaging non-uniform region of the scanned image, so that the scanned image during primary imaging and the scanned image during secondary imaging can be subjected to composite processing, and a more perfect image effect is obtained. The coil device is simple in structure and easy to operate, and does not need any posture change of a detected person in the rotating process of the body transmitting coil and the secondary imaging process.

A medical scanning system comprising a main magnet and a coil arrangement of any of the above;

the main magnet surrounds to form a cavity, a body emission coil of the coil device is positioned in the cavity, and an imaging adjusting module of the coil device is connected with the main magnet and the body emission coil.

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

the control module is used for controlling the driving part to drive the body transmitting coil to rotate relative to the main magnet after the medical scanning system images for the first time.

In one embodiment, the medical scanning system further comprises a detection module electrically connected with the control module, wherein the detection module is used for searching and sending the position of the imaging nonuniform area and the position of the imaging optimal area of the scanned image to the control module after the medical scanning system is imaged for the first time;

the control module determines the rotation angle of the body emission coil relative to the main magnet based on the position of the imaging nonuniform region and the position of the imaging optimal region of the scanning image, so that the imaging nonuniform region of the scanning image when imaging again is coincident with the imaging optimal region of the scanning image when imaging for the first time.

According to the medical scanning system, the driving part of the imaging adjusting module can drive the body transmitting coil to rotate relative to the main magnet through the transmission part so as to adjust the position of the imaging non-uniform region of the scanned image, so that the scanned image during primary imaging and the scanned image during secondary imaging can be subjected to composite processing, and a more perfect image effect can be obtained. The medical scanning system is simple in structure and easy to operate, and does not need any posture change of a detected person in the rotating process of the body transmitting coil and the secondary imaging process.

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

firstly imaging, then driving a body emission coil to rotate relative to a main magnet so as to adjust the position of an imaging non-uniform area of a scanned image;

and imaging again, and then compounding the scanning image during the first imaging with the scanning image during the second imaging.

In one embodiment, before the rotating of the driver transmitting coil relative to the main magnet, the imaging method further comprises:

after the first imaging, searching the position of the imaging non-uniform area and the position of the imaging optimal area of the scanning image;

and determining the angle of the body transmitting coil which rotates relative to the main magnet based on the position of the imaging nonuniform region and the position of the imaging optimal region of the scanning image, so that the imaging nonuniform region of the scanning image when in imaging again is coincident with the imaging optimal region of the scanning image when in imaging for the first time.

According to the imaging method of the medical imaging system, the drive body transmitting coil can rotate relative to the main magnet after the first imaging so as to adjust the position of the imaging non-uniform area of the scanned image, so that the scanned image during the first imaging and the scanned image during the second imaging can be subjected to composite processing, and a more perfect image effect can be obtained. The imaging method of the medical scanning system is easy to operate, and the detected person does not need to carry out any posture change in the rotating process of the body transmitting coil and the imaging process again.

Drawings

Fig. 1 is a schematic structural diagram of a medical scanning system according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of an imaging adjustment module according to another embodiment of the present invention;

FIG. 3 is a schematic diagram of a radio frequency circularly polarized field of a body transmit coil according to one embodiment of the present invention;

FIG. 4 is a schematic diagram illustrating image compounding principles of a medical imaging system according to an embodiment of the present invention;

FIG. 5 is a side view of a medical scanning system provided in accordance with an embodiment of the present invention;

FIG. 6 is a schematic diagram of a body transmit coil according to an embodiment of the present invention;

fig. 7 is a schematic structural diagram of a tensioning portion according to an embodiment of the present invention.

Wherein the reference numerals in the drawings are as follows:

10. an imaging adjustment module; 100. a drive section; 110. a motor; 120. a drive wheel; 200. a transmission section; 210. a drive belt; 220. a driving wheel; 230. driving the wheel; 240. a first drive lever; 250. a second transmission rod; 300. a linkage section; 310. a linkage wheel; 320. a linkage belt; 400. a tension section; 410. a tension wheel; 420. a wheel carrier; 420a, mounting a bar-shaped hole; 510. a first rotating shaft; 520. a second rotating shaft; 600. a support portion; 20. a transmitting coil; 20a, rotating teeth; 30. a main magnet; 30a, a mounting platform.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

As shown in fig. 1 and 2, an embodiment of the present invention provides a coil device of 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 part 100 and a transmission part 200, and the driving part 100 can drive the body transmitting coil 20 to rotate relative to the main magnet 30 through the transmission part 200 to adjust the position of the imaging non-uniform region of the scanned image.

As an example, as shown in fig. 1 and 2, the medical scanning system further includes a main magnet 30, the main magnet 30 circumferentially forming a bore in which the body transmit coil 20 is located. It will be appreciated that to enable the body transmit coil 20 to be rotated relative to the main magnet 30, the body transmit coil 20 is not fixed to the main magnet 30, unlike the prior art mounting of the body transmit coil 20.

Medical scanning systems herein include, but are not limited to, magnetic resonance systems. The structure and operation of the medical scanning system will be described below with reference to the magnetic resonance system as an example.

As shown in fig. 3, the rf circularly polarized field excited by the body transmitting coil 20 generally includes a uniform rf circularly polarized field region and a non-uniform rf circularly polarized field region, wherein a region corresponding to the uniform rf circularly polarized field region in the scanned image of the magnetic resonance system is referred to as an imaged uniform region, a region corresponding to the non-uniform rf circularly polarized field region is referred to as an imaged non-uniform region, and an image effect of the imaged uniform region is greater than an image effect of the imaged non-uniform region.

In the coil device for medical scanning system as described above, the body transmitting coil 20 is not rotated relative to the main magnet 30 at the time of first imaging, and the non-uniform imaging region of the scanned image is a non-circular region enclosed by the dotted line in the upper left image of fig. 4; after the first imaging, the driving part 100 of the imaging adjustment module 10 drives the body transmitting coil 20 to rotate relative to the main magnet 30 through the transmission part 200; then, imaging is carried out again, and the imaging non-uniform area of the scanning image is adjusted to the non-circular area encircled by the dotted line of the upper right graph in the graph 4; and then, carrying out composite processing on the scanned image during primary imaging and the scanned image during secondary imaging, specifically, covering the imaging non-uniform area during primary imaging on the imaging uniform area during secondary imaging and covering the imaging non-uniform area during secondary imaging on the imaging uniform area during primary imaging, so that a more perfect image effect can be obtained.

As can be seen, in the coil device for a medical scanning system provided in the present application, the driving part 100 of the imaging adjustment module 10 can drive the body emitting coil 20 to rotate relative to the main magnet 30 through the transmission part 200 to adjust the position of the imaging non-uniform region of the scanned image, so that the scanned image during the first imaging and the scanned image during the second imaging can be processed in a composite manner, thereby obtaining a more perfect image effect. The coil device has simple structure and easy operation, and does not need any posture change of the detected person in the rotating process of the body transmitting coil 20 and the imaging process again.

With respect to how the driving part 100 drives the body emission coil 20 to rotate through the transmission part 200, the embodiment of the present invention provides two ways:

in the mode (1), as shown in fig. 2, the driving unit 100 is a reciprocating linear motion mechanism, and the transmission unit 200 is a crank mechanism. In the process of the reciprocating linear motion of the driving part 100, the transmission part 200 converts the linear motion transmitted by the driving part 100 into a rotational motion, so as to drive the body transmitting coil 20 to rotate.

Alternatively, the number of the driving parts 100 and the transmission parts 200 may be 2, wherein one driving part 100 drives the front end of the body emission coil 20 to rotate through the corresponding transmission part 200, and one driving part 100 drives the rear end of the body emission coil 20 to rotate through the corresponding transmission part 200. In this manner, the drive section 100 can be assured of efficiently driving the rotation of the body discharge coil 20.

Alternatively, the driving part 100 may be a hydraulic cylinder; as shown in fig. 2, the transmission part 200 includes a first transmission rod 240 and a second transmission rod 250, a first end of the first transmission rod 240 is hinged to a piston rod of the hydraulic cylinder, a second end of the first transmission rod 240 is hinged to a first end of the second transmission rod 250, the second transmission rod 250 can rotate around a second end of the second transmission rod 250, and the second end of the second transmission rod 250 is fixedly connected to the body emission coil 20, wherein the first end and the second end of the first transmission rod 240 are distributed oppositely, and the first end and the second end of the second transmission rod 250 are distributed oppositely. Note that, the double-headed arrow in fig. 2 represents the direction of the reciprocating linear motion of the driving portion 100.

In the process that the hydraulic cylinder pushes the piston rod of the hydraulic cylinder to perform reciprocating linear motion, the first transmission rod 240 rotates around the joint with the piston rod, so as to drive the second transmission rod 250 to rotate around the second end of the hydraulic cylinder, and the body emission coil 20 also rotates under the driving of the second transmission rod 250. Wherein, a supporting part 600 (see fig. 2) can be disposed on the end surface of the main magnet 30, and the supporting part 600 has a supporting hole thereon; the second driving rod 250 has a rotating shaft at a second end, a first end of the rotating shaft is rotatably disposed in the supporting hole, and a 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 disposed opposite to each other. And a support part 600 for ensuring smooth rotation of the second driving lever 250.

As shown in fig. 1 and 5, the driving unit 100 includes a motor 110 and a driving wheel 120 provided on an output shaft of the motor 110; the body-emitting coil 20 is provided with a rotating tooth 20a, and the transmission unit 200 is engaged with the rotating tooth 20a and the driving wheel 120. The rotation of the body transmitting coil 20 is realized by a tooth matching mode, and the tooth matching mode has the characteristic of small operation space, so that the internal structure of the magnetic resonance system is more compact.

Alternatively, the motor 110 may be mounted on the end face of the main magnet 30, or on the scan cylinder of the magnetic resonance system, or again on the ground.

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

Alternatively, the rotating teeth 20a may be directly formed on the curved surface of the body-radiating coil 20, or may be connected to the body-radiating coil 20 by welding or the like.

Further, in some embodiments of the present invention, as shown in fig. 1 and 5, the transmission portion 200 includes a transmission belt 210, and the transmission belt 210 is tensioned between the driving wheel 120 and the rotating teeth 20 a. It should be noted that the transmission belt 210 is provided with teeth that are engaged with the driving wheel 120 and the rotating teeth 20 a. When the motor 110 is started, the driving belt 210 is driven by the driving wheel 120 on the output shaft of the motor 110 to move around the driving wheel 120, so as to drive the rotating teeth 20a to rotate, and the body transmitting coil 20 is rotated therewith. The transmission belt 210 has a small volume and a light weight compared to other transmission structures (e.g., transmission gears).

Further, in some embodiments of the present invention, as shown in fig. 1 and 5, the transmission portion 200 further includes a driving wheel 220 and a driving wheel 230 coaxially disposed on the driving wheel 220, the driving wheel 220 and/or the driving wheel 230 being rotatably disposed 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 engaged 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 is driven by the driving wheel 120 on the output shaft of the motor 110 to move around the driving wheel 120 and the driving wheel 220, so as to drive the driving wheel 220 to rotate, the driving wheel 220 drives the driving wheel 230 to rotate together, the driving wheel 230 also drives the rotating teeth 20a to rotate, and the body emission coil 20 also rotates.

Alternatively, 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 mounted on the end surface of the main magnet 30 through the first rotating shaft 510.

With respect to the positional relationship between the capstan 220 and the entrainment roller 230, the capstan 220 may be disposed between the end surface of the main magnet 30 and the entrainment roller 230, in which case the diameter of the entrainment roller 230 may be smaller than, equal to, or larger than the diameter of the capstan 220; alternatively, the follower 230 may be disposed between the end surface of the main magnet 30 and the capstan 220, in which case the diameter of the follower 230 needs to be smaller than the diameter of the capstan 220.

In the case that the transmission part 200 further includes the driving wheel 230, in some embodiments of the present invention, as shown in fig. 1 and 5, the coil device further includes a linkage part 300, and the linkage part 300 includes at least 3 linkage wheels 310, and the linkage wheels 310 are rotatably disposed on the end surface of the main magnet 30 and engaged with the rotating teeth 20 a. In the process that the rotating teeth 20a drive the body transmitting coil 20 to rotate, the linkage wheel 310 also rotates along with the rotating teeth 20a due to the meshing with the rotating teeth 20a, and can support the body transmitting coil 20 on the premise of not influencing the rotation of the rotating teeth 20 a.

As to the number of the linkage wheels 310, 3, 4, 5 or more may be provided, and the embodiment of the present invention is not particularly limited as long as the body transmission coil 20 can be firmly supported in the bore of the main magnet 30. In addition, regarding the setting position of the linkage wheel 310, it can be uniformly distributed along the circumferential direction of the rotating teeth 20a together with the driving wheel 230, and the embodiment of the present invention is not particularly limited as long as the body transmitting coil 20 can be firmly supported in the bore of the main magnet 30.

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

Specifically, in some embodiments of the present invention, as shown in fig. 6, the number of the rotating teeth 20a is 2 and the rotating teeth 20a are respectively disposed on the front and rear ends of the body-emitting coil 20, the number of the linking portions 300 is 2 and the linking portions 300 are respectively disposed on the front and rear end surfaces of the main magnet 30; the number of the driving part 100 and the transmission part 200 is 1, and the driving part 100 is used for driving the front end or the rear end of the rotating tooth 20a to rotate. Thus, the stable rotation of the body transmitting coil 20 can be ensured, the structure of the imaging adjusting module 10 can be simplified, and the energy-saving effect is also achieved.

Further, in some embodiments of the present invention, as shown in fig. 1 and 5, the linkage portion 300 further includes a linkage belt 320, and the linkage belt 320 is tensioned between the linkage wheel 310 and the driving wheel 230. It should be noted that the linkage belt 320 is provided with teeth which are matched with the linkage wheel 310 and the driving wheel 230. In the process that the driving wheel 230 rotates, the linkage belt 320 moves around the driving wheel 230 and the linkage wheel 310 under the driving of the driving wheel 230, so as to drive the linkage wheel 310 to rotate, so that the linkage wheel 310 applies a rotational force to the rotating teeth 20a together with the driving wheel 230, and the body transmitting coil 20 rotates more stably.

Further, in some embodiments of the present invention, as shown in fig. 1 and 5, the coil device further includes a tension part 400, the tension part 400 including at least one tension roller 410, the tension roller 410 being disposed on an end surface of the main magnet 30 and serving to press the interlocking belt 320 toward the body-emission coil 20. The tension wheel 410 can keep the linkage belt 320 at a certain tension by pressing the linkage belt 320, so that the linkage belt 320 can better drive the linkage wheel 310 to rotate under the driving of the driving wheel 230.

The number of the tension pulleys 410 may be set to 1, 2, 3 or more, and the embodiment of the present invention is not particularly limited as long as the interlocking belt 320 can be effectively tensioned. The position of the tension wheel 410 may be distributed near the driving wheel 230 or near the linkage wheel 310, and the embodiment of the present invention is not particularly limited as long as the linkage belt 320 can be effectively tensioned.

Optionally, the tensioning wheel 410 can rotate, so that the rolling friction between the tensioning wheel 410 and the linkage belt 320 can be reduced, and the service life of the tensioning wheel 410 and the linkage belt 320 can be prolonged.

Optionally, as shown in fig. 1 and 5, the tensioning portion 400 further includes a mounting platform 30a disposed on the end surface of the main magnet 30, and the tensioning wheel 410 is mounted on the mounting platform 30a through 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. The tensioning wheel 410 can select a corresponding mounting position on the wheel frame 420 according to the tensioning degree of the linkage belt 320 to achieve the assembly of the wheel frame 420 and the mounting platform 30a, for example, if the tensioning degree of the linkage belt 320 is larger, a mounting position close to the rotating teeth 20a can be selected to achieve the assembly of the wheel frame 420 and the mounting platform 30a, and if the tensioning degree of the linkage belt 320 is smaller, a mounting position far from the rotating teeth 20a can be selected to achieve the assembly of the wheel frame 420 and the mounting platform 30 a.

Specifically, as shown in fig. 7, the wheel carrier 420 has a mounting bar hole 420a extending in a radial direction of the main magnet 30, and the wheel carrier 420 is connected to the mounting platform 30a through the mounting bar hole 420 a. It will be appreciated that there are multiple consecutive mounting locations on the mounting bar holes 420a so that the tensioner 410 adjusts the tension of the timing belt 320 more reasonably.

As shown in fig. 1, another embodiment of the present invention provides a medical scanning system comprising a main magnet 30 and a coil device according to any one of the above; the main magnet 30 surrounds a bore in which the body transmission coil 20 of the coil device is located, and the imaging adjustment module 10 of the coil device is connected to the main magnet 30 and the body transmission coil 20.

In the medical scanning system, the driving part 100 of the imaging adjustment module 10 can drive the body emitting coil 20 to rotate relative to the main magnet 30 through the transmission part 200 to adjust the position of the imaging non-uniform region of the scanned image, so that the scanned image during the first imaging and the scanned image during the second imaging can be subjected to composite processing, and a more perfect image effect can be obtained. The medical scanning system has simple structure and easy operation, and does not need any posture change of the detected person in the rotating process of the body transmitting coil 20 and the secondary imaging.

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

Further, in some embodiments of the present invention, the medical scanning system further includes a detection module electrically connected to the control module, wherein the detection module is configured to search and send the position of the imaging non-uniform region and the position of the imaging optimal region of the scanned image to the control module after the medical scanning system is first imaged; the control module determines the angle of rotation of the body transmitting coil 20 relative to the main magnet 30 based on the position of the imaging non-uniform region of the scan image and the position of the imaging optimal region, so that the imaging non-uniform region of the scan image at the time of re-imaging coincides with the imaging optimal region of the scan image at the time of first imaging. Therefore, when the scanned image during primary imaging and the scanned image during secondary imaging are subjected to composite processing, the imaging non-uniform area during primary imaging can be covered by the imaging uniform area during secondary imaging, and the imaging non-uniform area during secondary imaging can be covered by the imaging uniform area during primary imaging, so that a more perfect image effect can be obtained. It should be noted that the best homogeneous region imaged in the scanned image is understood as the region with the highest signal-to-noise ratio.

Another embodiment of the present invention provides an imaging method of the medical scanning system, which includes:

step S100, first imaging, and then rotating the driving body transmitting coil 20 relative to the main magnet 30 to adjust the position of the imaging non-uniform region of the scanned image;

and step S200, re-imaging, and then compounding the scanned image during the first imaging and the scanned image during the re-imaging.

According to the imaging method of the medical scanning system, the driving body transmitting coil 20 can rotate relative to the main magnet 30 after first imaging so as to adjust the position of the imaging non-uniform region of the scanned image, so that the scanned image during first imaging and the scanned image during second imaging can be subjected to composite processing, and a more perfect image effect can be obtained. The imaging method of the medical scanning system is easy to operate, and the detected person does not need to carry out any posture change in the rotating process of the body transmitting coil 20 and the imaging process again.

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

s300, after the first imaging, searching the position of the imaging non-uniform area and the position of the imaging optimal area of the scanning image;

step S400, determining the angle of rotation of the body emission coil 20 with respect to the main magnet 30 based on the position of the imaging non-uniform region of the scanned image and the position of the imaging optimal region, so that the imaging non-uniform region of the scanned image at the time of re-imaging coincides with the imaging optimal region of the scanned image at the time of first imaging.

Therefore, when the scanned image during primary imaging and the scanned image during secondary imaging are subjected to composite processing, the imaging non-uniform area during primary imaging can be covered by the imaging uniform area during secondary imaging, and the imaging non-uniform area during secondary imaging can be covered by the imaging uniform area during primary imaging, so that a more perfect image effect can be obtained.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.