CN113749639B - Coil device for medical scanning system, medical scanning system and imaging method - Google Patents
Coil device for medical scanning system, medical scanning system and imaging method Download PDFInfo
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Abstract
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 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
The present invention relates to the field of medical devices, and more particularly, to a coil apparatus for a medical scanning system, and an imaging method.
Background
In a conventional magnetic resonance system (MRI) setup, a body transmit coil is mounted within a main magnet as a radio frequency front end of the magnetic resonance system responsible for transmitting and receiving magnetic resonance signals. The body transmit coil may generally be configured in a birdcage-like fashion with a number of metallic rings at each end and a number of metallic legs in the middle and a series of loading capacitors. The birdcage-structured volume transmit coil is capable of generating 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 transmit coil is substantially uniform, the scan image of the local position of the patient is still poor due to the non-uniformity of the local position during clinical imaging. At present, the scanned image is processed by adjusting parameters of a magnetic resonance system or increasing contrast of the scanned image, but the problem of poor imaging effect of the scanned image still cannot be effectively solved.
Disclosure of Invention
Based on this, it is necessary to provide a coil device for a medical scanning system, a medical scanning system and an imaging method, which cannot effectively solve the technical problem that the imaging effect of a scanned image is poor, in the scanning image processing method adopted in the prior art.
A coil arrangement for a medical scanning system, the coil arrangement comprising a body transmit coil and an imaging adjustment 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 an imaging non-uniform area of a scanned 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 emitting coil is provided with rotating teeth, and the transmission part is meshed with the rotating teeth and the driving wheel.
In one embodiment, the drive section includes a drive belt that is tensioned between the drive 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 are/is 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 includes a linkage portion including at least 3 linkage wheels rotatably provided on an end surface of the main magnet and engaged with the rotating teeth.
In one embodiment, the linkage further comprises a linkage belt, which is tensioned between the linkage wheel and the drive wheel.
In one embodiment, the coil arrangement further comprises a tensioning part comprising at least one tensioning wheel arranged on an end face of the main magnet for pressing the linkage belt towards the body transmitting coil.
In one embodiment, the tensioning part further comprises a mounting platform arranged on the end face of the main magnet, and the tensioning wheel is mounted on the mounting platform through a wheel frame, wherein the wheel frame is provided with a plurality of mounting positions distributed along the radial direction of the main magnet.
In one embodiment, the wheel frame is provided with a mounting strip-shaped hole extending along the radial direction of the main magnet, and the wheel frame is connected with the mounting platform through the mounting strip-shaped hole.
In one embodiment, the number of the rotating teeth is 2, 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 face and the rear end face of the main magnet;
The number of the driving parts and the number of the transmission parts are 1, and the driving parts are used for driving 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 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, so that the scanning image during the first imaging and the scanning image during the second imaging can be subjected to compound processing, and a more perfect image effect is obtained. The coil device has a simple structure and is easy to operate, and any body position change of a person to be detected is not needed in the rotating process of the body transmitting coil and the re-imaging process.
A medical scanning system comprising a main magnet and a coil arrangement as claimed in any one of the preceding claims;
The main magnet surrounds a cavity, a body transmitting 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 transmitting coil.
In one embodiment, the medical scanning system further comprises a control module electrically connected to the drive portion 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 non-uniform area and the position of the imaging optimal area of the scanned image to the control module after the medical scanning system images for the first time;
the control module determines an angle by which the body transmitting coil rotates relative to the main magnet 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 in re-imaging coincides with the imaging optimal region of the scanning image in first imaging.
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 scanning image, so that the scanning image during the first imaging and the scanning image during the second imaging can be subjected to compound processing, and a more perfect image effect is obtained. The medical scanning system has a simple structure and is easy to operate, and any body position change of a detected person is not needed in the rotation process of the body transmitting coil and the re-imaging process.
An imaging method of a medical scanning system, the imaging method comprising:
first imaging, and then driving the body transmitting coil to rotate relative to the main magnet so as to adjust the position of an imaging non-uniform area of the scanned image;
Re-imaging, and then compositing the scanning image at the time of first imaging with the scanning image at the time of re-imaging.
In one embodiment, the imaging method further comprises, prior to rotating the body transmit coil relative to the main magnet:
after the first imaging, searching the position of an imaging non-uniform area and the position of an imaging optimal area of the scanned image;
And determining the rotation angle of the body transmitting coil relative to the main magnet 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 in re-imaging coincides with the imaging optimal region of the scanning image in first imaging.
According to the imaging method of the medical imaging system, the body transmitting coil can be driven to rotate relative to the main magnet after the first imaging so as to adjust the position of the imaging non-uniform region of the scanning image, so that the scanning image during the first imaging and the scanning image during the second imaging can be subjected to compound processing, and a more perfect image effect can be obtained. The imaging method of the medical scanning system is easy to operate, and no body position change is needed to be carried out by a detected person in the rotation process of the body transmitting coil and the re-imaging process.
Drawings
FIG. 1 is a schematic 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 RF circularly polarized field of a body transmitting coil according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating an image composition principle of a medical imaging system according to an embodiment of the present invention;
FIG. 5 is a side view of a medical scanning system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a body transmitting 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. 100, a driving part, 110, a motor, 120, a driving wheel, 200, a transmission part, 210, a driving belt, 220, a driving wheel, 230, a driving wheel, 240, a first driving rod, 250, a second driving rod, 300, a linkage part, 310, a linkage wheel, 320, a linkage belt, 400, a tensioning part, 410, a tensioning wheel, 420, a wheel frame, 420a, a mounting strip hole, 510, a first rotating shaft, 520, a second rotating shaft, 600, a supporting part, 20, a transmitting coil, 20a, rotating teeth, 30, a main magnet, 30a and a mounting platform.
Detailed Description
In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed, mechanically connected, electrically connected, directly connected, indirectly connected through an intervening medium, or in communication between two elements or in an interaction relationship between two elements, unless otherwise explicitly specified. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
It will be understood that when an element is referred to as being "fixed" 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 are used herein for illustrative purposes only and are not meant to be the only 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 emitting coil 20 and an imaging adjustment module 10, wherein the imaging adjustment module 10 includes a driving portion 100 and a transmission portion 200, and the driving portion 100 can drive the body emitting coil 20 to rotate relative to the main magnet 30 through the transmission portion 200 so as to adjust the position of an imaging non-uniform region of a 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 being formed with a bore around it, and the body transmit coil 20 being located in the bore. It will be appreciated that in order to enable the body transmit coil 20 to rotate relative to the main magnet 30, the body transmit coil 20 is not fixed to the main magnet 30, unlike the prior art 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 using a magnetic resonance system as an example.
Wherein the rf circularly polarized field excited by the body transmit coil 20 generally comprises a uniform rf circularly polarized field region and a non-uniform rf circularly polarized field region, wherein the region corresponding to the uniform rf circularly polarized field region in the scan image of the magnetic resonance system is referred to as an imaging uniform region, the region corresponding to the non-uniform rf circularly polarized field region is referred to as an imaging non-uniform region, and the imaging effect of the imaging uniform region is greater than the imaging effect of the imaging non-uniform region.
In the coil device for a medical scanning system as described above, the body transmitting coil 20 does not rotate relative to the main magnet 30 during the first imaging, and the imaging non-uniform area of the scanned image is a non-circular area surrounded by the dotted line of the upper left image in 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 driving part 200, and then the imaging non-uniform area of the scanned image is adjusted to a non-circular area surrounded by the dotted line of the upper right image in fig. 4, and then the scanned image during the first imaging and the scanned image during the second imaging are subjected to a composite processing, that is, the imaging non-uniform area during the second imaging is covered by the imaging non-uniform area during the first imaging and the imaging non-uniform area during the second imaging is covered by the imaging non-uniform area during the first imaging, so that a more perfect image effect can be obtained.
Therefore, in the coil device for a medical scanning system provided by the application, the driving part 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 part 200 to adjust the position of the imaging non-uniform region of the scanned image, so that the scanned image in the first imaging and the scanned image in the second imaging can be composited, and a more perfect image effect can be obtained. The coil device has a simple structure and is easy to operate, and no posture change is required to be carried out by a detected person in the rotating process of the body transmitting coil 20 and the re-imaging process.
Regarding how the driving part 100 drives the body transmitting coil 20 to rotate through the transmission part 200, the embodiment of the present invention gives two ways:
In the (1) th aspect, as shown in fig. 2, the driving unit 100 is a reciprocating linear motion mechanism, and the transmission unit 200 is a crank link mechanism. In the process of reciprocating the driving part 100, the transmission part 200 converts the linear motion transmitted by the driving part 100 into the rotary motion, so that the body transmitting coil 20 can be driven to rotate.
Alternatively, the number of driving parts 100 and driving parts 200 may be 2, wherein one driving part 100 drives the front end of the body emitting coil 20 to rotate through the corresponding driving part 200, and one driving part 100 drives the rear end of the body emitting coil 20 to rotate through the corresponding driving part 200. In this way, it is ensured that the driving section 100 can effectively drive the body transmitting coil 20 to rotate.
Alternatively, the driving part 100 may be a hydraulic cylinder, as shown in fig. 2, the driving part 200 includes a first driving rod 240 and a second driving rod 250, a first end of the first driving rod 240 is hinged to a piston rod of the hydraulic cylinder, a second end of the first driving rod 240 is hinged to a first end of the second driving rod 250, the second driving rod 250 can rotate around its second end as a center, and the second end of the second driving rod 250 is fixedly connected to the body transmitting coil 20, wherein the first end and the second end of the first driving rod 240 are relatively distributed, and the first end and the second end of the second driving rod 250 are relatively distributed. The double 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 body to do reciprocating rectilinear motion, the first transmission rod 240 rotates by taking the joint of the first transmission rod and the piston rod as the center, so that the second transmission rod 250 is driven to rotate by taking the second end of the body as the center, and the body transmitting coil 20 is driven to rotate by the second transmission rod 250. The main magnet 30 may have a support portion 600 (see fig. 2) on an end surface thereof, the support portion 600 having a support hole, and the second transmission rod 250 may have a rotation shaft on a second end thereof, a first end of the rotation shaft being rotatably disposed in the support hole, a second end of the rotation shaft being connected to a center of the body transmitting coil 20, wherein the first and second ends of the rotation shaft are relatively distributed. The support part 600 can ensure smooth rotation of the second transmission lever 250.
In the (2) mode, 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 transmitting 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 a magnetic resonance system, or on the ground.
Alternatively, the drive wheel 120 may be mounted to the output shaft of the motor 110 by welding, interference fit, or the like.
Alternatively, the rotating teeth 20a may be formed directly on the curved surface of the body transmitting coil 20, or may be connected to the body transmitting 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. The driving belt 210 is provided with teeth that cooperate 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 emitting coil 20 rotates along with the rotating teeth. The drive belt 210 has a small size and a light weight compared to other drive structures (e.g., drive gears).
Still further, in some embodiments of the present invention, as shown in fig. 1 and 5, the transmission part 200 further includes a driving wheel 220 and a driving wheel 230 coaxially disposed on the driving wheel 220, wherein the driving wheel 220 and/or the driving wheel 230 are rotatably disposed on the main magnet 30, and 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 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 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, and the driving wheel 230 drives the rotating teeth 20a to rotate, so that the body transmitting coil 20 also rotates.
Alternatively, the driving wheel 230 is disposed on the driving wheel 220 by welding, integrally forming, etc., and the driving wheel 220 and the driving wheel 230 may be mounted on the end surface of the main magnet 30 through the first rotating shaft 510.
Regarding the positional relationship between the capstan 220, the capstan 230 may be disposed between the end face of the main magnet 30 and the capstan 230, in which case the diameter of the capstan 230 may be smaller, equal to, or larger than the diameter of the capstan 220, or the capstan 230 may be disposed between the end face of the main magnet 30 and the capstan 220, in which case the diameter of the capstan 230 needs to be smaller than the diameter of the capstan 220.
In some embodiments of the present invention, if the transmission part 200 further includes the driving wheel 230, 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 an end surface of the main magnet 30 and engaged with the rotating teeth 20 a. In the process of driving the body transmitting coil 20 to rotate by the rotating teeth 20a, the linkage wheel 310 is meshed with the rotating teeth 20a to rotate, so that the body transmitting coil 20 can be supported on the premise of not influencing the rotation of the rotating teeth 20 a.
Regarding the number of the linkage wheels 310, 3,4,5 or more may be provided, and embodiments of the present invention are not particularly limited as long as the body transmitting coil 20 can be firmly supported in the bore of the main magnet 30. In addition, regarding the arrangement position of the coupling wheel 310, it may 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.
Alternatively, the coupling wheel 310 is rotatably provided on the end surface of the main magnet 30 by the 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, the rotating teeth 20a are respectively disposed on the front and rear ends of the body transmitting coil 20, the number of the linkage parts 300 is 2, the linkage parts 300 are respectively disposed on the front and rear end surfaces of the main magnet 30, the number of the driving parts 100 and the transmission parts 200 is 1, and the driving parts 100 are used for driving the rotating teeth 20a of the front or rear end to rotate. Thus, not only can the stable rotation of the body transmitting coil 20 be ensured, but also the structure of the imaging adjusting module 10 can be simplified, and the energy-saving effect is achieved.
Further, in some embodiments of the present invention, as shown in fig. 1 and 5, the linkage part 300 further includes a linkage belt 320, and the linkage belt 320 is tensioned between the linkage wheel 310 and the driving wheel 230. The interlocking belt 320 is provided with teeth that cooperate with the interlocking wheel 310 and the driving wheel 230. In the process of driving the wheel 230 to rotate, 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, and the linkage wheel 310 also applies a rotating force to the rotating teeth 20a along with the driving wheel 230, so that 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 apparatus further includes a tensioning part 400, the tensioning part 400 including at least one tensioning wheel 410, the tensioning wheel 410 being disposed on an end surface of the main magnet 30 and for pressing the link belt 320 toward the body transmitting coil 20. The tensioning wheel 410 can keep the linkage belt 320 at a certain tensioning degree by pressing the linkage belt 320, so that the linkage belt 320 is driven by the driving wheel 230 to better drive the linkage wheel 310 to rotate.
Regarding the number of the tension pulleys 410, 1,2, 3 or more may be provided, and the embodiment of the present invention is not particularly limited as long as the linked belt 320 can be effectively tensioned. Regarding the installation position of the tensioning wheel 410, it 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 rolling friction between the tensioning wheel 410 and the linkage belt 320 can be reduced, and the service lives of the tensioning wheel 410 and the linkage belt 320 can be prolonged.
Alternatively, as shown in fig. 1 and 5, the tensioning part 400 further includes a mounting platform 30a provided on an 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 in a radial direction of the main magnet 30. The tensioning wheel 410 can select a corresponding installation position on the wheel frame 420 according to the tensioning degree of the linkage belt 320 to realize the assembly of the wheel frame 420 and the installation platform 30a, for example, if the tensioning degree of the linkage belt 320 is larger, the installation position close to the rotating gear 20a can be selected to realize the assembly of the wheel frame 420 and the installation platform 30a, for example, if the tensioning degree of the linkage belt 320 is smaller, the installation position far away from the rotating gear 20a can be selected to realize the assembly of the wheel frame 420 and the installation platform 30 a.
Specifically, as shown in fig. 7, the wheel frame 420 has a mounting bar hole 420a extending in a radial direction of the main magnet 30 thereon, and the wheel frame 420 is connected to the mounting platform 30a through the mounting bar hole 420 a. It will be appreciated that the mounting bar 420a has a plurality of consecutive mounting locations thereon, so that the tensioning wheel 410 adjusts the tension of the linkage belt 320 more reasonably.
As shown in fig. 1, another embodiment of the present invention provides a medical scanning system including a main magnet 30 and the coil apparatus according to any one of the above, wherein the main magnet 30 surrounds a cavity, a body transmitting coil 20 of the coil apparatus is disposed in the cavity, and an imaging adjustment module 10 of the coil apparatus is connected to the main magnet 30 and the body transmitting coil 20.
In the above medical scanning system, the driving part 100 of the imaging adjustment module 10 may 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 in the first imaging and the scanned image in the second imaging may be composited, thereby obtaining a more perfect image effect. The medical scanning system has a simple structure and is easy to operate, and no posture change is required to be carried out by a detected person in the rotating process of the body transmitting coil 20 and the re-imaging process.
In some embodiments of the present invention, the medical scanning system further comprises a control module electrically connected to the driving part 100 of the imaging adjustment module 10, the control module being configured to control 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 first imaged. The control module can improve the degree of automation of the medical scanning system to 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 comprises a detection module electrically connected to the control module, the detection module is configured to find 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 first imaging of the medical scanning system, and 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 region and the position of the imaging optimal region of the scanned image, so that the imaging non-uniform region of the scanned image coincides with the imaging optimal region of the scanned image at the first imaging. Therefore, when the scanning image in the first imaging and the scanning image in the second imaging are subjected to composite processing, the imaging non-uniform area in the first imaging can be covered by the imaging uniform area in the second imaging and the imaging non-uniform area in the second imaging can be covered by the imaging uniform area in the first imaging, so that a more perfect image effect can be obtained. It should be noted that, the optimal uniform area of the scanned image can be understood as the area having the highest signal-to-noise ratio.
Another embodiment of the present invention provides an imaging method of the medical scanning system, including:
step S100, imaging for the first time, and then driving the body transmitting coil 20 to rotate relative to the main magnet 30 so as to adjust the position of an imaging non-uniform area of a scanned image;
Step 200, re-imaging, and then compositing the scanning image at the time of first imaging with the scanning image at the time of re-imaging.
According to the imaging method of the medical scanning system, the body transmitting coil 20 can be driven to rotate relative to the main magnet 30 after the first imaging to adjust the position of the imaging non-uniform region of the scanning image, so that the scanning image during the first imaging and the scanning image during the second imaging can be subjected to compound processing, and a more perfect image effect can be obtained. The imaging method of the medical scanning system is easy to operate, and no body position change is required to be carried out by a detected person in the rotating process of the body transmitting coil 20 and the re-imaging process.
In the case where the drive body transmit coil 20 rotates relative to the main magnet 30, the imaging method further includes:
Step S300, after the first imaging, searching the position of the imaging non-uniform area and the position of the imaging optimal area of the scanned image;
Step S400, determining the rotation angle of the body transmitting coil 20 relative 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 scanning image in the first imaging and the scanning image in the second imaging are subjected to composite processing, the imaging non-uniform area in the first imaging can be covered by the imaging uniform area in the second imaging and the imaging non-uniform area in the second imaging can be covered by the imaging uniform area in the first imaging, so that a more perfect image effect can be obtained.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.
Claims (12)
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