Device, system and method for improving the accuracy of magnetic resonance examination of patients

By integrating technical means such as airbags and cameras on the head support of the magnetic resonance examination equipment, stable fixation and dynamic monitoring of the patient's head are solved, and the problem of unclear images caused by unstable head fixation in the prior art is solved, and the accuracy and efficiency of the inspection are improved.

CN110558987BActive Publication Date: 2025-05-09BEIJING CHAOYANG HOSPITAL CAPITAL MEDICAL UNIVERSITY
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Patent Information

Application Number
CN201910830516.1
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2019-09-04
Publication Date
2025-05-09
Estimated Expiration
2039-09-04

AI Technical Summary

Technical Problem

Existing magnetic resonance examination equipment has instability when fixing the patient's head, resulting in unclear or heavy images of the examination, affecting the quality of the examination, especially in critically ill patients or scientific research examinations.

Method used

By setting airbags, multiple cameras, identification devices, control devices and alarm devices on the head support, effective fixation and dynamic monitoring of the patient's head are achieved, ensuring the appropriateness and stability of the airbag inflation.

Benefits of technology

It improves the accuracy and efficiency of magnetic resonance examinations, reduces the labor intensity of doctors, promptly detects and corrects patients' tiny head movements, and significantly improves the success rate of examinations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present invention relates to the field of medical equipment, and specifically to a device, system and method for improving the accuracy of magnetic resonance examinations for patients. The present invention provides a device for improving the accuracy of magnetic resonance examinations for patients, including a head coil electrically connected to a magnetic resonance device through a wire, a plurality of coils arranged inside the head coil, the head coil being arranged on a base and provided with a sliding device for pulling out and pushing back to make a reciprocating motion between the head coil and the head support, the head coil being able to cover and open the patient's head on the head support, the head support being provided with a pad having a shape corresponding to the outer structure of a human head, the pad being provided with an airbag connected to the outside and providing compressed air. The present invention achieves the purpose of improving the accuracy of magnetic resonance examinations and improving the efficiency of magnetic resonance examinations of the head through the coordinated use of the airbag, the camera that can be raised and lowered, the identification device, the control device and the alarm device.
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Description

Technical Field

[0001] The present invention belongs to the technical field of medical equipment, and in particular relates to a device, a system and a method for improving the accuracy of magnetic resonance examination for patients. Background Art

[0002] In the prior art, such as Figure 1 The magnetic resonance examination device shown comprises a head coil (10) connected to an external magnetic resonance device via a wire (20), a plurality of coils being arranged inside the head coil (10), the head coil (10) being arranged on a base (30) and a sliding device for pulling out and pushing back and forth movement being arranged between the head coil (10) and the head support (40), the head coil (10) covering and opening the patient's head on the head support (40), and a protective pad (50) having a shape corresponding to the external structure of a human head being arranged on the head support (40). However, when performing an MRI examination on a patient, the head coil shell is pushed or pulled to expose and cover the head support (40), the patient's head is placed on the protective pad (50) on the head support (40), and then the head coil shell is pushed or pulled to cover the head support (40) and the patient's head. Since the size and structure of the head support (40) and the protective pad (50) are fixed, and the size and shape of the heads of different patients are different, the head support and the protective pad cannot effectively fix the patient's head. In addition, the MRI examination takes a long time and is noisy. When the patient's entire body enters the magnet, there will be a clear sense of spatial oppression, which can easily cause the patient to be nervous. When the patient's head is placed on the protective pad (50), the patient's head will often shake or sway consciously or unconsciously, which will cause the MRI examination image to be unclear or have double images, which often leads to unclear MRI examination images or inability to fully identify lesions, affecting the examination quality. In order to ensure clear MRI images, the current method is that the doctor who performs the MRI first uses sponges to plug the two sides of the patient's head tightly before the MRI examination, and tries to reduce the gap between the head support, the coil body and the patient's head, so as to temporarily fix the patient's head and effectively fix the patient's head. However, this fixation method, because the sponge is too soft, requires constant adjustment, which can easily cause dissatisfaction in patients, wastes time, and the fixation is unreliable, and often cannot effectively improve the quality of the examination. Especially when examining critically ill patients or conducting scientific research examinations that require high clarity of MRI images, the lack of effective head fixation will reduce the accuracy and success rate of MRI examinations, and also seriously affect the efficiency of MRI examinations. Summary of the invention

[0003] In order to solve the above technical problems, the present invention provides a device, system and method for improving the accuracy of magnetic resonance examination of patients. By using the airbag, multiple cameras, identification device, control device and alarm device in coordination with each other, the purpose of improving the accuracy of magnetic resonance examination is achieved, and the efficiency of magnetic resonance examination is also improved.

[0004] To achieve the above-mentioned purpose of the invention, the present invention provides a device for improving the accuracy of magnetic resonance examination for patients, including a head coil electrically connected to the magnetic resonance device through wires, a coil formed by winding a plurality of wires is arranged inside the head coil, the head coil is arranged on a base and a sliding device for pulling out and pushing back to make a reciprocating motion is provided between the head coil and the head support, the head coil can cover and open the patient's head on the head support, the head support is provided with a pad with a shape corresponding to the outer structure of the human head, and the pad is provided with an air bag connected to the outside and providing compressed air.

[0005] A preferred technical solution, the airbag includes a back brain airbag support and side airbags with separate closed structures and independent air supply, a connector is provided between the back brain airbag support and the side airbags, the back brain airbag support is arranged at the bottom center of the cushion, the side airbags are arranged on both sides of the cushion, the back brain airbag support and the side airbags are operated by external control devices and air supply and deflation devices respectively.

[0006] A preferred technical solution is that the side airbags are provided with horizontal and vertical ribs that are cross-arranged in a transverse and vertical direction, a head clamping device is provided at the intersection of the horizontal and vertical ribs, a head positioning device is provided at the middle of the airbags separated by the horizontal and vertical ribs, and an elliptical concave is provided on the back of the head airbag support, and a plurality of head lifting devices are provided on the concave.

[0007] According to a preferred technical solution, the head clamping device and the head lifting device have the same shape and both include an upper gasket and a lower gasket respectively fixed to the bottom and the top of the airbag, the inner guide column on the upper gasket is inserted into the guide column sleeve of the lower gasket, and a spring in a clamped state is provided on the outside of the guide column sleeve.

[0008] According to a preferred technical solution, a protrusion is provided on the outer side of the upper gasket, and the protrusion is provided with a platform.

[0009] In a preferred technical solution, the head coil comprises a coil housing of an external frame structure and a coil arranged inside the coil housing;

[0010] The coil housing is provided with camera devices on two sides located at the position of the patient's nose tip, and the camera device includes a first camera arranged in the guide rail groove, and a pulley is provided at the top of the guide rail groove, and one end of the pulley is provided with a rope fixedly connected to the first camera housing, and the other end of the rope passes through the through hole and is connected to the control device;

[0011] The top of the head coil housing is provided with a flange corresponding to the shape of the patient's nose bridge, and a second camera is provided inside the flange;

[0012] A positioning identification structure is provided on the patient's head for use with a first camera and a second camera. The positioning identification structure includes a column that can be set at the center of the forehead, the tip of the nose and the mandible and is respectively adhered by adhesive sheets. A spherical body is provided on the top of each of the columns. A fixing frame is provided on the outer side of the adhesive sheet. An adhesive layer is provided on the bottom surface of the fixing frame for bonding and fixing to the patient's forehead, the tip of the nose and the mandible.

[0013] A preferred technical solution, the system includes a CPU processor electrically connected to the magnetic resonance device, the CPU processor transmits data with the calculation deviation threshold module, the image analysis and processing module, the first camera, and the second camera; the CPU processor is also connected to the alarm module, the control module, and the airbag inflation and deflation module.

[0014] According to a preferred technical solution, a digital display screen module is provided between the CPU processor and the calculation deviation threshold module.

[0015] According to a preferred technical solution, a buzzer is provided on the alarm module.

[0016] As a preferred technical solution, the present invention also provides a method for using the system in the device for improving the accuracy of magnetic resonance examination of patients, and the method includes the steps of using the device and the system.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention has a simple structure and is easy to operate, thereby improving the convenience and efficiency of magnetic resonance examination.

[0019] 2. The present invention can effectively and timely control and adjust the air intake of the airbag, which can meet the needs of head fixation for various types of patients, ensure the accuracy of magnetic resonance imaging, and reduce the labor intensity of magnetic resonance doctors.

[0020] 3. The present invention can timely detect slight head movements of the patient, prompt the physician to interrupt the examination, further adjust the gas volume, strengthen fixation and educate the patient to cooperate, thereby improving the success rate of the examination. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural diagram of the head coil and the base in the prior art;

[0022] Figure 2 is a top view of the three-dimensional structure of the present invention;

[0023] Figure 3 It is a front view of the three-dimensional structure of the present invention;

[0024] Figure 4 It is a top view of the three-dimensional structure of the airbag and the protective pad in the present invention;

[0025] Figure 5 is a cross-sectional view of the head pressing device and the head lifting device in the present invention;

[0026] Figure 6 It is a cross-sectional structural diagram of the guide rail and the camera device in the present invention;

[0027] Figure 7 is a top view of the positioning identification structure of the present invention;

[0028] Figure 8 It is a front view of the positioning identification structure in the present invention;

[0029] Fig. 9 It is a flow chart of the module working structure of the system in the present invention.

[0030] Reference numerals

[0031] In the figure, 10 is a head coil, 11 is a head coil housing, 12 is a camera device, 121 is a first camera head, 122 is a guide rail groove, 123 is a wire rope, 124 is a through hole, 125 is a fixed pulley, 126 is a counterweight block, 13 is a flange, 14 is a second camera head, 15 is an inflatable tube bundle, 20 is a wire, 30 is a base, 40 is a head support, 50 is a protective pad, 60 is an air bag, 61 is a head clamping device, 611 is a spring, 612 is an upper gasket, 613 is a head clamping device, 614 is a head clamping device, 615 is a head clamping device, 616 is a head clamping device, 617 is a head clamping device, 618 is a head clamping device, 619 is a head clamping device, 620 is a head clamping device, 621 is a head clamping device, 622 is a head clamping device, 623 is a head clamping device, 624 is a head clamping device, 625 is a head clamping device, 626 is a head clamping device, 627 is a head clamping device, 628 is a head clamping device, 629 is a head clamping device, 630 is a head clamping device, 631 is a head clamping device, 632 is a head clamping device, 633 is a head clamping device, 634 is a head clamping device, 635 is a head clamping device, 636 is a head clamping device, 637 is a head clamping device, 638 is a head clamping device, 639 is a head clamping device, 640 is a head clamping device, 641 is a head clamping device, 642 is a head clamping device, —protrusion, 614—platform, 615—inner guide column, 616—guide column sleeve, 617—lower gasket; 62—longitudinal ribs, 63—transverse ribs, 64—head positioning device, 65—side airbags, 66—back of the head airbag support, 67—connecting body, 68—inner concave, 69—head lifting device, 610—neck airbag support; 70—positioning identification structure, 71—fixing frame, 72—adhesive sheet, 73—positioning groove, 74—sphere, 75—column, 76—adhesive layer. DETAILED DESCRIPTION

[0032] The specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] Example

[0034] like Figure 1-3As shown, the present invention provides a device for improving the accuracy of magnetic resonance examination of patients, including a head coil 10 electrically connected to the magnetic resonance equipment through a wire 20, an external head coil shell 11 is made of hard plastic, a plurality of coils are arranged inside the head coil 10 for magnetic resonance examination, the head coil shell 11 is arranged on a base 30, and a sliding device that can be pulled out and pushed back and can make reciprocating motion is provided between the head coil shell 11 and the head support 40, when the head coil 10 is pulled or pushed, the patient's head on the head support 40 can be covered and opened, the head support 40 is provided with a pad 50 with a shape corresponding to the outer structure of the human head, the pad 50 is made of elastic foam material, and is provided with an air bag 60 connected to the outside to provide compressed air and controlled by multiple valves to provide compressed air. The airbag 60 includes a split structure and a back-brain airbag support 66 and a side airbag 65 which are airtightly connected and supplied with air separately. The inflation and deflation of the back-brain airbag support 66 and the side airbag 65 are controlled by valves in the control room and controlled by doctors. A connector 67 is provided between the back-brain airbag support 66 and the side airbag 65. The connector 67 is made of soft plastic. The connector 67 separates the back-brain airbag support 66 and the side airbag 65 into separate and independent airbags. The back-brain airbag support 66 is arranged at the bottom center of the cushion 50. The two side airbags 65 are arranged on both sides of the cushion 50. The back-brain airbag support 66 and the two side airbags 65 work respectively through an external control device and an air supply and deflation device. In a preferred technical solution, a neck airbag support 610 is provided on the back-brain airbag support 66 to improve the patient's comfort.

[0035] like Figure 4 and 5As shown, the side airbag 65 is provided with horizontal ribs 63 and vertical ribs 62 which are cross-arranged in the transverse and vertical directions, a head clamping device 61 is provided at the intersection of the horizontal ribs 63 and the vertical ribs 62, a head positioning device 64 is provided at the middle position of the airbag separated by the horizontal ribs 63 and the vertical ribs 62, and an elliptical recess 68 is provided on the back of the head airbag support 66, and a plurality of head lifting devices 69 are provided on the recess 68. Among them, the head clamping device 61 and the head lifting device 69 have the same shape and structure, both are made of soft rubber material and both include an upper gasket 612 and a lower gasket 617 respectively fixed to the bottom and upper part of the airbag, the inner guide column 615 on the upper gasket 612 is inserted into the guide column sleeve 616 of the lower gasket 617, and the outer side of the guide column sleeve 616 is provided with a spring 611 in a clamped state, and the spring 611 is used to tighten the lower gasket 617 and the upper gasket 612. When compressed air is filled, the head clamping device 61 plays a role in slowly compressing and fixing both sides of the patient's head, and it also plays a role in evenly force-fixing the patient's head. The head clamping device 61 and the head lifting device 69 have the same structure, but they are different in size and play different roles. When compressed air is filled / released into the head lifting device 69, it plays a role in slowly raising or lowering the patient's head. According to a preferred technical solution, a protrusion 613 is provided on the outer side of the upper gasket 612, and a platform 614 is provided on the protrusion 613. The function of the platform 614 is to make the patient's head skin evenly stressed without causing marks or injuries to the patient's head skin.

[0036] like Figure 6 As shown, the head coil 10 includes a coil housing 11 of an external frame structure and a coil arranged inside the coil housing 11. The coil housing 11 is provided with a camera device 12 on two sides located at the position of the patient's nose tip. The camera device 12 includes a first camera 121 arranged in a guide groove 122. A pulley 125 is provided at the top of the guide groove 122. One end of a rope 123 is provided on the pulley 125 and is fixedly connected to the housing of the first camera 121. The other end of the rope 123 passes through a through hole 124 and is connected to the control device. Pulling the rope 123 from the outside can raise the first camera 121. Loosening the rope 123 can lower the first camera 121 due to gravity. Since a counterweight block 126 is provided at the lower side of the first camera 121, the first camera 121 can be raised and lowered more stably. The materials used in this embodiment 10 and the camera device 12 are selected to use metal materials as little as possible. The coil and the like are made of plastic or resin materials. The interface between the coil and the magnetic wire is a copper contact, and the wire part is mostly made of optical fiber. Although aluminum alloys are not attracted by magnets, they still interfere with the image, so the closer to the patient, the less metal is used. For safety reasons, current magnets are equipped with cameras to facilitate observation of the patient's condition during the examination, but they must be special cameras that can work in high magnetic field environments without affecting the stability of the magnetic field.

[0037] like Figure 3 , 7 As shown in FIG8 , a flange 13 corresponding to the shape of the patient's nose bridge is provided on the top of the head coil housing 11, and a second camera 14 is provided inside the flange 13; a positioning identification structure 70 used in conjunction with the first camera 121 and the second camera 14 is provided on the patient's head. Figure 7 and 8 As shown, the positioning identification structure 70 specifically includes columns 75 which are arranged at the center of the forehead, nose tip and mandible and are respectively adhered by adhesive sheets 72. A sphere 74 is provided on the top of each column 75. A fixed frame 71 is mounted on the outer side of the adhesive sheet 72. The bottom surface of the fixed frame 71 is provided with an adhesive layer 76 for bonding and fixing to the patient's forehead, nose tip and mandible.

[0038] like Fig. 9As shown, a system in a device for improving the accuracy of magnetic resonance examination of patients provided in this embodiment includes an alarm system arranged in a control room, the alarm system includes a CPU processor electrically connected to the magnetic resonance device, the CPU processor and the calculation deviation threshold module, the image analysis and processing module, the first camera, and the second camera transmit data; the CPU processor is also connected to the alarm module, the control module, the airbag inflation and deflation module, and a buzzer is provided on the alarm module; a displacement and axial angle model is constructed in the CPU processor, and the displacement and axial angle model is based on the first camera and the second camera. The center of the sphere 74 on the patient's head is first selected as the initial origin, and the X-axis, Y-axis and Z-axis origin coordinates of the initial origin are (0, 0, 0, ), and the initial axial angle θ is set to 0°. When the patient's head shakes or shakes consciously or unconsciously, the position of the subsequent image changes with the initial image, that is, the image of the magnetic resonance examination changes. When the center of the subsequent sphere 74 is displaced from the initial origin and the axial angle changes, that is, when the new coordinates of the X-axis, Y-axis and Z-axis are (±x, ±y, ±z), and / or θ≥1°, the CPU processor searches The center of the sphere 74 is selected as the coordinates (0, 0, 0,) of the origin of the X-axis, Y-axis and Z-axis. The displacement threshold ranges of the X-axis, Y-axis and Z-axis are |x|≥1mm, |y|≥1mm or |z|≥1mm. When the axial angle range of the threshold exceeds 1°, a buzzer connected to the CPU processor alarms. The doctor can also manually set the displacement and axial rotation angle range thresholds that trigger the alarm according to the examination needs. The image analysis processing module continues to compare and analyze the points on the images of the subsequent first camera and the second camera at any time, and determines and analyzes the X-axis, Y-axis and Z-axis images at any time. The second, third, and so on, when the displacement of multiple points from the origin exceeds |x|, |y|, |z|≥|1mm|, or the axial angle exceeds 1°, the buzzer on the alarm module sounds to remind the doctor that it is necessary to adjust the inflation and deflation of the back-head airbag support 66 and the two side airbags 65 until the airbags fix the patient's head and the pressure makes the patient's head movement threshold meet the requirements; a digital display module is also provided between the CPU processor and the calculation deviation threshold module to display the specific value of the threshold, so as to facilitate the doctor to grasp the adjustment amplitude of the inflation and deflation of the back-head airbag support 66 and the two side airbags 65.

[0039] The present invention also provides a method of using the system in the device for improving the accuracy of magnetic resonance examination of a patient, the method comprising the steps of using the device and the system:

[0040] 1) First, pull open the head coil 10 to expose the pad 50 and the air bag 60, and the patient lies flat with his face upward, so that the patient's head is completely resting on the air bag 60;

[0041] 2) Adhere the adhesive sheet 72 with the spherical body 74 to the center of the patient's forehead, nose tip and mandible respectively, and put the fixed frame 71 on the outside of the adhesive sheet 72 on the patient's forehead, nose tip and mandible to confirm whether the inspection position is at the center of the forehead, nose tip and mandible. If qualified, adhere the adhesive layer 76 under the fixed frame 71 to the patient's forehead, nose tip and mandible;

[0042] 3) Open the valves on the air pump and the back-head airbag support 66, inflate the back-head airbag support 66, and make the height of the patient's head reach a suitable height; then open the valves of the two side airbags 65 to press and fix the patient's head. If the patient's head deviates to the left, close the valve of the right-hand side airbag 65 to allow the air pump to continue to inflate the left-hand side airbag 65 until the patient's head is in the middle position, and vice versa, until the patient's head is in the middle position;

[0043] 4) Align the second camera 14 with the center of the sphere 74 on the patient's nose tip; pull or loosen the string 123 to adjust the two first cameras 121 so that the first cameras 121 on both sides are aligned with the side center of the sphere 74 on the patient's nose tip;

[0044] 5) Observe the digital display screen to see whether the changes in displacement and axial angle are within a reasonable range;

[0045] 6) Performing magnetic resonance imaging on the patient;

[0046] 7) When the patient's head shakes or trembles, a buzzer on the alarm module sounds, indicating that the patient's head shakes or trembles. The doctor observes the specific value of the threshold value displayed on the display screen module to determine whether the shaking or trembling exceeds the standard required for the examination, and excludes shaking or trembling caused by reasonable factors; if the patient's head shakes or trembles exceed the standard required for the examination, the operating doctor will suspend the examination, adjust the inflation and deflation of the back head airbag support 66 and the two side airbags 65, and inform the patient again to control the head movement, and then continue the examination; if the head movement control is still poor, continue to adjust the airbag volume until the buzzer stops beeping or the display screen module shows that the threshold value is qualified.

[0047] The preferred specific implementation modes and embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above implementation modes and embodiments, and various changes can be made within the knowledge scope of those skilled in the art without departing from the concept of the present invention.

Claims

1. A device for improving the accuracy of magnetic resonance examination for patients, comprising a head coil (10) electrically connected to the magnetic resonance device via a wire (20), a positioning identification structure (70) provided on the patient's head for use in conjunction with a first camera (121) and a second camera (14), and an alarm system provided in a control room, the alarm system comprising a CPU processor electrically connected to the magnetic resonance device, the CPU processor transmitting data with a calculation deviation threshold module, an image analysis processing module, a first camera, and a second camera; the CPU processor is also connected to the alarm module, a control device, and an airbag inflation and deflation device; a displacement and axial angle model is constructed in the CPU processor, and the displacement and axial angle model is generated according to the first camera, The second camera takes multiple frames of images, and selects the center of the sphere (74) on the patient's head as the initial origin. When the displacement and / or the axial angle exceeds a threshold value, a buzzer connected to the CPU processor sounds an alarm to prompt that the back of the head airbag support (66) and the two side airbags (65) need to be adjusted to inflate or deflate. The head coil (10) is provided with a plurality of coils inside. The head coil (10) is arranged on the base (30) and a sliding device for pulling out and pushing back to perform a reciprocating motion is provided between the head coil (10) and the head support (40). The head coil (10) covers and opens the patient's head on the head support (40). The head support (40) is provided with a pad (50) having a shape corresponding to the external structure of a human head, characterized in that: The protective pad (50) is provided with an airbag (60) connected to the outside and providing compressed air. The airbag (60) comprises a back-brain airbag support (66) and a side airbag (65) which are split and sealed and independently supply air. A connector (67) is provided between the back-brain airbag support (66) and the side airbag (65). The back-brain airbag support (66) is arranged at the center of the bottom of the protective pad (50), and the side airbag (65) is arranged on both sides of the protective pad (50). The back-brain airbag support (66) and the side airbag (65) are operated by an external control device and an inflation and deflation device, respectively.

2. The device for improving the accuracy of magnetic resonance examination of patients according to claim 1, characterized in that: The side airbag (65) is provided with transverse ribs (63) and vertical ribs (62) arranged in a transverse and vertical direction, a head pressing device (61) is provided at the intersection of the transverse ribs (63) and the vertical ribs (62), a head positioning device (64) is provided at the middle of the airbag separated by the transverse ribs (63) and the vertical ribs (62), and an elliptical concave (68) is provided on the back head airbag support (66), and a plurality of head lifting devices (69) are provided on the concave (68).

3. The device for improving the accuracy of magnetic resonance examination of patients according to claim 2, characterized in that: The head clamping device (61) and the head lifting device (69) have the same shape and both include an upper gasket (612) and a lower gasket (617) respectively fixed to the bottom and top of the airbag; an inner guide post (615) on the upper gasket (612) is inserted into a guide post sleeve (616) of the lower gasket (617); and a spring (611) in a clamped state is provided on the outside of the guide post sleeve (616).

4. The device for improving the accuracy of magnetic resonance examination of patients according to claim 3, characterized in that: A protrusion (613) is provided on the outer side of the upper gasket (612), and the protrusion (613) is provided with a platform (614).

5. The device for improving the accuracy of magnetic resonance examination of patients according to claim 1, characterized in that: The head coil (10) comprises a head coil housing (11) of a frame structure and a coil arranged inside the housing; The head coil housing (11) is provided with a camera device (12) on two side surfaces located at the position of the patient's nose tip, the camera device (12) comprising a first camera (121) arranged in a guide rail groove (122), A pulley (125) is provided at the top end of the guide rail groove (122), a wire rope (123) is provided on the pulley (125), one end of the wire rope (123) is fixedly connected to the housing of the first camera (121), and the other end of the wire rope (123) passes through the through hole (124) and is connected to the control device; A flange (13) corresponding to the shape of the patient's nose bridge is provided on the top of the head coil housing (11), and a second camera (14) is provided on the inner side of the flange (13); The positioning identification structure (70) comprises columns (75) arranged at the center of the forehead, the nose tip and the mandible and respectively bonded via bonding sheets (72), a sphere (74) being arranged on the top of each column (75), a fixing frame (71) being sleeved on the outer side of the bonding sheet (72), and a bonding layer (76) being provided on the bottom surface of the fixing frame (71) for bonding and fixing to the forehead, the nose tip and the mandible of the patient.

6. A system for improving the accuracy of magnetic resonance examination of patients, using the device for improving the accuracy of magnetic resonance examination of patients according to any one of claims 1 to 5, characterized in that: The system includes a CPU processor electrically connected to the magnetic resonance device, and the CPU processor transmits data with a calculation deviation threshold module, an image analysis and processing module, a first camera, and a second camera; the CPU processor is also connected to an alarm module, a control module, and an airbag inflation and deflation module.

7. The system for improving the accuracy of magnetic resonance examination of patients according to claim 6, characterized in that: A digital display screen module is provided between the CPU processor and the calculation deviation threshold module.

8. The system for improving the accuracy of magnetic resonance imaging of patients according to claim 6, characterized in that: The alarm module is provided with a buzzer.

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