Magnetoencephalography scanning device and magnetoencephalography scanning method

Abstract

The present application provides a magnetoencephalogram scanning device and a magnetoencephalogram scanning method, which relate to the field of medical imaging technology and solve the problem of low efficiency of existing sitting helmet scanning. The device includes a detector slot module with multiple detector slots, and the detector slot module is used to synchronously control the travel of the detectors carried by the multiple detector slots. The magnetoencephalogram scanning device provided by the present application greatly improves the scanning efficiency through modular design. The device allows the subject to be scanned in a supine position, which not only avoids the defects of head weight and movement in sitting scanning, but also actively limits the head at the same time, further reduces the artifacts caused by head movement, and improves the stability and scanning accuracy of the scanning process. In addition, the device also has excellent ease of use. Without introducing additional interference, each detector can be conveniently placed in the optimal scanning position suitable for different subjects, and quickly reset after the scan is completed, making it convenient for the subject to move the head out.

Description

Technical Field

[0001] The present application relates to the field of medical imaging technology, and in particular to a magnetoencephalography scanning device and a magnetoencephalography scanning method. Background Art

[0002] Magnetoencephalography is a functional brain imaging technology that detects weak magnetic fields generated by neural electrical signals. It is widely used in clinical and scientific research, including the diagnosis and localization of neurological diseases such as epilepsy, biomarker research on mental illness, preoperative localization of brain functional areas, brain cognitive neuroscience research, etc. However, most of the current magnetoencephalography scanning schemes based on atomic magnetometers (also known as atomic magnetometers, optically pumped magnetometers, Optically Pumped Magnetometers, OPM) are seated, that is, the subject wears a wearable magnetoencephalography helmet (magnetic cap) and inserts multiple detectors into the slots one by one. After the scan is completed, the multiple detectors need to be reset one by one. This working method greatly reduces the scanning efficiency and makes the scanning process relatively complicated. Summary of the invention

[0003] In view of this, the present application is dedicated to providing a magnetoencephalography scanning device and a magnetoencephalography scanning method to solve the problems of low scanning efficiency and complex scanning process of seated scanning helmets in the prior art.

[0004] In a first aspect, a magnetoencephalogram scanning device is provided, comprising: a detector slot module having a plurality of detector slots, wherein the detector slot module is used to synchronously control the travel of detectors carried by the plurality of detector slots.

[0005] In combination with the first aspect, in certain implementations of the first aspect, the magnetoencephalography scanning device further includes: a skeleton detachably connected to the detector slot module, the skeleton being used to support the detector slot module and the subject's head.

[0006] In combination with the first aspect, in certain implementations of the first aspect, the magnetoencephalography scanning device further includes: a module moving component detachably connected to the skeleton, wherein the module moving component is used to control the distance between the detector slot module and the subject's head.

[0007] In combination with the first aspect, in certain implementations of the first aspect, the skeleton includes a skeleton through hole, the module moving component includes a module moving unit, the module moving unit includes an embedding end and an adjustment end opposite to the embedding end, the embedding end is detachably connected to the skeleton through hole, and the adjustment end is detachably connected to the detector slot module.

[0008] In combination with the first aspect, in some implementations of the first aspect, the magnetoencephalogram scanning device further includes: a reset component that cooperates with the detector slot module, and the reset component is used to quickly reset the detector.

[0009] In combination with the first aspect, in certain implementations of the first aspect, the skeleton includes a protrusion, the reset component includes an elastic unit, the elastic unit includes a fixed end and a reset end opposite to the fixed end, the fixed end is fixedly connected to the protrusion, and the reset end is fixedly connected to the detector slot module.

[0010] In combination with the first aspect, in certain implementations of the first aspect, the magnetoencephalogram scanning device further includes: a head limiting component detachably connected to the skeleton, for fixing the head of the subject.

[0011] In combination with the first aspect, in certain implementations of the first aspect, the head limiting component includes a buffer unit, which is located at the end where the head limiting component contacts the subject's head, and is used to buffer the force when the head limiting component contacts the subject's head.

[0012] In combination with the first aspect, in some implementations of the first aspect, the detector slot includes a receiving slot located on a surface of the detector slot adjacent to the detector, for supporting a fixing component capable of increasing the resistance between the detector and the detector slot.

[0013] In combination with the first aspect, in certain implementations of the first aspect, the detector slot includes an anti-wear groove located at the corner of the detector slot and the adjacent surface of the detector, for reducing wear when the edge of the detector contacts the detector slot.

[0014] In a second aspect, a magnetoencephalography (MEG) scanning method is provided, which is applied to a MEG scanning device including a detector slot module, wherein the detector slot module has multiple detector slots, and includes: using the detector slot module to synchronously control the travel of detectors carried by the multiple detector slots.

[0015] In combination with the second aspect, in certain implementations of the second aspect, the magnetoencephalography scanning device also includes a skeleton detachably connected to the detector slot module and a module moving part detachably connected to the skeleton, and also includes: using the module moving part to control the distance between the detector and the subject's head, wherein the skeleton is used to support the detector slot module and the subject's head.

[0016] In combination with the second aspect, in certain implementations of the second aspect, the magnetoencephalogram scanning device further includes a head limiting component detachably connected to the skeleton, and further includes: fixing the subject's head using the head limiting component.

[0017] In combination with the second aspect, in some implementations of the second aspect, the magnetoencephalogram scanning device also includes a reset component that cooperates with the detector slot module, and also includes: resetting the detector using the reset component.

[0018] The present application proposes a specific detector and head-carrying device for horizontal magnetic brain scanning, namely, a magnetic brain mapping scanning device. The magnetic brain mapping scanning device adopts a modular design, and has a detector slot module with multiple detector slots, which can synchronously control the travel of multiple detectors, greatly improving the scanning efficiency, and at the same time can conveniently place each detector in the optimal scanning position suitable for different subjects. The magnetic brain mapping scanning device also includes a skeleton detachably connected to the detector slot module, which is used to carry the detector slot module and the subject's head. The skeleton has a connecting part, which can be fixedly connected to the scanning bed through the connecting part, so that the subject can be scanned in a horizontal position, avoiding the defects of the head load and movement of the subject in the sitting scanning helmet in the prior art.

[0019] The magnetoencephalogram scanning device also includes a module moving component detachably connected to the skeleton, which is used to control the distance between the detector slot module and the subject's head. The magnetoencephalogram scanning device also includes a reset component that cooperates with the detector slot module, which is used to quickly reset the detector, making it convenient for the subject to move the head out, thereby improving scanning efficiency and ease of use. The magnetoencephalogram scanning device also includes a head limiting component detachably connected to the skeleton, which is used to fix the subject's head, actively limit the subject's head, further reduce artifacts caused by head movement, and improve the stability and scanning accuracy of the scanning process.

[0020] The detector slot includes a receiving groove, which is located on the surface of the detector slot adjacent to the detector, and is used to carry a fixing component that can increase the resistance between the detector and the detector slot, effectively avoiding the defects of the existing sitting scanning helmet in which the position between the detector and the subject's head changes due to the shaking of the subject's head, resulting in low scanning accuracy. The detector slot includes an anti-wear groove, which is located at the corner position of the surface of the detector slot adjacent to the detector, and is used to reduce the wear of the edge of the detector when it contacts the detector slot, thereby extending the service life of the detector and the detector slot and reducing the cost of clinical application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1Shown is a schematic structural diagram of a magnetoencephalography scanning device provided in one embodiment of the present application.

[0022] Figure 2 Shown is a schematic structural diagram of a detector slot module of a magnetoencephalography scanning device provided in one embodiment of the present application.

[0023] Figure 3 Shown is a schematic structural diagram of the skeleton of a magnetoencephalography scanning device provided in one embodiment of the present application.

[0024] Figure 4 Shown is a schematic structural diagram of a module moving component of a magnetoencephalography scanning device provided in one embodiment of the present application.

[0025] Figure 5 The figure shows a partially enlarged structural schematic diagram of a magnetoencephalogram scanning device provided by an embodiment of the present application in a state where the module moving component is not inserted into the skeleton through hole.

[0026] Figure 6 The figure is a schematic structural diagram of a magnetoencephalography scanning device provided in an embodiment of the present application in a detector-inserted state.

[0027] Figure 7 Shown is a schematic structural diagram of the head limiting component of the magnetoencephalography scanning device provided in one embodiment of the present application.

[0028] Figure 8 The figure is a partially enlarged structural schematic diagram of the head limiting component of the magnetoencephalogram scanning device provided by one embodiment of the present application being inserted into the through hole of the skeleton.

[0029] Fig. 9 Shown is a partial enlarged structural schematic diagram of the resetting component of the magnetoencephalography scanning device provided in one embodiment of the present application.

[0030] Fig.10 The figure is a schematic flow chart of a magnetoencephalography scanning method provided in one embodiment of the present application. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0032] Traditional brain magnetograph uses superconducting quantum interference device (Super-conducting Quantum Interference Device, SQUID) as a magnetic field detector. The detector needs to be kept at an extremely low temperature of liquid helium to work properly. Therefore, it needs to be encapsulated and fixed in a dewar tank, and separated from the outside world by a vacuum insulation layer several centimeters thick, which limits the detector to obtain a stronger signal strength close to the scalp, and the helmet made of rigid dewar is not portable, and it is also impossible to match the contours of different human heads, and the universality is poor in practical application. In addition, the current schemes for atomic magnetometer brain magnetograph scanning are mostly sitting, that is, the subjects wear wearable brain magnetograph helmets (brain magnetograph caps). Before scanning, multiple detectors need to be inserted into the detector slots one by one. After the scanning is completed, multiple detectors need to be reset one by one. Such an operation mode obviously greatly reduces the scanning efficiency and the operation process is relatively complicated. The brain magnetograph scanning device provided by the present application can synchronously control multiple detectors to insert into the detector slots and synchronously reset multiple detectors, which greatly improves the scanning efficiency and simplifies the operation process.

[0033] In addition, it should be noted that spatial registration is usually required before brain magnetic scanning to determine the relative position of each detector and the subject's head, so as to fuse with structural images such as magnetic resonance imaging and CT to localize the source of cerebral cortical neural activity. Accurate source localization requires ensuring that the position of the subject's head and the detector, and the detectors relative to each other, remain fixed during the scanning process.

[0034] In the existing magnetoencephalography technology based on atomic magnetometers, subjects usually wear a wearable magnetoencephalography scanning device in a sitting position. The device can be a rigid helmet or a flexible cap with a rigid detector slot installed on a flexible substrate. Although the rigid helmet can fix the relative position between the detectors well, the applicable head shape range is limited, and the weight applied to the subject's head is large, which is easy to cause discomfort and interfere with brain activity, thereby affecting the scanning results. Although the flexible cap can adapt to a wider range of head shapes, the relative position between the detectors cannot be fixed during the scanning process, and will gradually change due to the elasticity of the flexible substrate or slight shaking of the head, which will not only reduce the accuracy of source positioning, but also increase the influence of crosstalk between adjacent detectors. In addition, whether it is a rigid helmet or a flexible cap, it is difficult to limit the shaking of the subject's head during the scanning process, resulting in obvious motion artifacts in the measured signal. This situation is particularly obvious when the subject adopts a sitting position, which greatly reduces the quality of the acquired magnetoencephalography signal. In addition, the movement of the subject's head and the detector during the scanning process will cause the relative position of the detector and the subject's head to change, making the relative position measured by the spatial registration before the scan no longer accurate, thereby reducing the accuracy of source positioning.

[0035] The magnetoencephalogram scanning device provided by the present application realizes synchronous control of multiple detectors to be inserted into the detector slots and synchronously reset multiple detectors through modular design and other methods. Each detector can also be moved independently to change the insertion depth to adapt to the head contours of different subjects (covering adults and children), significantly improving the scanning efficiency and application convenience of magnetoencephalogram. In addition, the magnetoencephalogram scanning device provided by the present application actively limits the shaking of the subject's head and the change of the position of the detector during the scanning process by using a horizontal scanning position, an active head limiter, a receiving slot that can limit the freedom of the detector and provide resistance for it, and a non-direct contact between the detector and the head surface of the subject, etc., significantly improving the quality of the measured magnetoencephalogram signal and the accuracy of source positioning.

[0036] In one embodiment of the present application, the magnetoencephalogram scanning device includes a detector slot module having multiple detector slots. The detector slot module can synchronously control the travel of detectors carried by the multiple detector slots, such as the positioning and resetting of the detectors, synchronously control the insertion of multiple detectors into the detector slots and synchronously reset the multiple detectors, thereby greatly improving the scanning efficiency and application convenience.

[0037] The embodiments of the present application are described in detail below in conjunction with the accompanying drawings.

[0038] Figure 1 FIG. 1 is a schematic diagram of the structure of a magnetoencephalogram scanning device provided in one embodiment of the present application. Figure 1 As shown, the magnetoencephalogram scanning device 10 includes a plurality of detector slot modules 20, a frame 30 detachably connected to the plurality of detector slot modules 20, a module moving component 40 and a head limiting component 50 detachably connected to the frame 30, and a plurality of reset components 60 coordinated with the plurality of detector slot modules 20. The plurality of detector slot modules 20 and the plurality of reset components 60 are in a one-to-one correspondence, that is, each detector slot module 20 corresponds to a reset component 60.

[0039] The magnetoencephalogram scanning device 10 has a shape that matches the contour of the human head, so that the subject's head can enter the magnetoencephalogram scanning device 10. The skeleton 30 has a shell that matches the contour of the subject's (such as a human) head, and a plurality of hollow areas that penetrate the shell. Among them, the plurality of detector slot modules 20 are in a one-to-one correspondence with the plurality of hollow areas, so that each detector slot module 20 can be detachably installed in the corresponding hollow area.

[0040] The module moving component 40 is detachably connected to the frame 30 and is used to adjust the distance between the detector slot module 20 and the subject's head. The head limiting component 50 is detachably connected to the frame 30 and is used to fix the subject's head. The resetting component 60 is linked with the detector slot module 20 and is used to reset multiple detectors.

[0041] It should be noted that the detector slot module 20 includes multiple detector slots, which can carry multiple detectors. Each detector slot corresponds one-to-one to each detector, so that one detector slot module 20 can synchronously control the travel of multiple detectors, such as the positioning and resetting of the detectors, which greatly improves the convenience and practicality of clinical applications.

[0042] Figure 2 The figure is a schematic diagram of the structure of the detector slot module of the magnetoencephalography scanning device provided in one embodiment of the present application. Figure 2 As shown, the detector slot module 20 has an arc shape adapted to the head contour. The detector slot module 20 includes a plurality of detector slots 21 and a module through hole 22. The detector slot module 20 can synchronously control the travel of the detectors carried by the plurality of detector slots 21, for example, synchronously control the positioning and resetting of the plurality of detectors.

[0043] It should be noted that, in one embodiment of the present application, the detector slot 21 has a rectangular cross-section and protrudes from the outer surface of the detector slot module 20. Each detector slot module 20 includes three module through holes 22 for detachably connecting with the skeleton 30. The module through hole 22 is a cylindrical through hole protruding from the outer surface of the detector slot module 20, wherein two module through holes 22 have the same structure and are located at positions opposite to the edge of the detector slot module 20, and the other module through hole 22 is located near the center of the detector slot module 20. On the outer surface of the detector slot module 20, in addition to the three module through holes 22 arranged, multiple detector slots 21 are orderly arranged at other positions, and adjacent detector slots 21 are either slightly spaced or closely connected. The multiple detector slots 21 arranged on the outer surface of the detector slot module 20 enable the multiple detectors carried by the multiple detector slots 21 to adapt to the head contours of different subjects (such as adults and children) to the greatest extent, and conveniently place each detector in the best scanning position suitable for different subjects.

[0044] In one embodiment of the present application, the cross-section of the detector slot 21 is rectangular, and may also be a structure of other shapes (such as a square, which can be configured according to the shape of the detector), and the positions of the three module through holes 22 may also be at other positions on the outer surface of the detector slot module 20. This is not uniformly limited in the present application.

[0045] It should be noted that the end faces of the detectors are all located below the inner curved surface of the detector slot module 20 .

[0046] In one embodiment of the present application, the detector slot 21 includes a receiving groove 211, which is located on the surface of the detector slot 21 adjacent to the detector, and is used to carry a fixing component that can increase the resistance between the detector and the detector slot 21. The receiving groove 211 is located at the center of the four surfaces of the detector slot 21, parallel to the detector slot 21, and is a two-stage type, respectively close to the inner and outer surfaces of the detector slot module 20, and the cross-section is between a semicircle and a circle. The receiving groove 211 does not pass through the detector slot 21, and the depth of the receiving groove 211 is not limited in the present application. It is used to insert a fixing component that increases resistance, increase the resistance between the detector and the detector slot 21 and limit the degree of freedom, to ensure that in the absence of external force, the detector can be fixed in the detector slot 21 at the insertion depth without sliding or shaking.

[0047] It should be noted that most of the magnetoencephalogram scanning schemes in the prior art are sitting, and the subjects wear wearable magnetoencephalogram helmets and insert the detectors into the slots. Although this scheme allows subjects to have more freedom of movement and perform more diverse tasks, the subject's head is very easy to shake when sitting, causing the magnetoencephalogram helmet to shake accordingly. It is conceivable that the position between the detector in the detector slot and the subject's head will change during the scanning process, thereby greatly reducing the accuracy of spatial registration, resulting in large errors in the tracing and positioning of neural activity. The accommodating slot 211 structure in one embodiment of the present application is used to insert a fixed component that increases resistance, increase the resistance between the detector and the detector slot 21 and limit the degree of freedom, to ensure that when the head is slightly shaken, the position between the detector in the slot and the subject's head will not change during the scanning process, and the detector can be fixed at the insertion depth without sliding or shaking, thereby improving the stability and scanning accuracy of the scanning process.

[0048] In one embodiment of the present application, the cross-sectional shape of the receiving groove 211 is not necessarily between a semicircle and a circle (i.e., the central angle of the cross-sectional circle is between 180 degrees and 360 degrees), but may be other shapes, and the position and direction in the detector slot 21 are not uniformly limited. The fixing component may be a silicone column or other component that can provide resistance. In the present application, there is no uniform limitation on the cross-sectional shape and fixing component of the receiving groove 211.

[0049] In one embodiment of the present application, the detector slot 21 includes an anti-wear groove 212, which is located at the corner of the detector slot 21 and the adjacent surface of the detector, parallel to and through the detector slot 21, and has the same size. The position and size of the anti-wear groove 212 in the detector slot 21 are not uniformly limited in the present application.

[0050] It should be noted that the anti-wear groove 212 of the detector slot 21 is used to prevent the edge of the detector from being worn when it contacts the detector slot 21. Most detectors in the prior art are cubic structures with right-angled corners, and the detector slot 21 in the present application is also a right-angled structure. In the process of inserting the detector into the detector slot 21, it is easy for the corners of the detector to touch the corners of the detector slot 21, causing the detector and the detector slot 21 to be easily worn, greatly shortening the service life of the detector and the detector slot 21, and increasing the application cost of brain magnetic scanning.

[0051] The anti-wear groove 212 provided in the embodiment of the present application reserves space for the detector in the detector slot 21. During the process of inserting the detector into the detector slot 21, it effectively reduces the chances that the corners of the detector touch the corners of the detector slot 21, thereby preventing the detector and the detector slot 21 from being worn to a great extent, thereby extending the service life of the detector and the detector slot 21 and reducing the application cost of brain magnetic scanning.

[0052] Figure 3 FIG. 1 is a schematic diagram of the structure of the skeleton of the magnetoencephalogram scanning device provided in one embodiment of the present application. Figure 3 As shown, the skeleton 30 provided in the embodiment of the present application includes a skeleton through hole 31, a protrusion 32, and a connecting portion 33. It is made of a rigid material and is used to support the detector slot module 20 and the subject's head. The skeleton 30 has a shape similar to the outline of the human head, and generally has five large hollow structures, which are used to correspond to the corresponding detector slot modules 20. The positions of the five large hollow structures are respectively the left, right, front, top, and back parts of the subject's head. Correspondingly, each hollow structure has a skeleton through hole 31 and two protrusions 32. The protrusions 32 extend outward perpendicularly to the outer surface of the hollow structure in which they are located. In the present application, there is no uniform limitation on the number and direction of the skeleton through holes 31 and the protrusions 32.

[0053] It should be noted that the skeleton through hole 31 is an internal thread structure for installing the module moving component 40 and the head limiting component 50. The protrusion 32 is used to nest each detector slot module 20. The skeleton 30 is fixedly connected to the scanning bed through the connecting part 33, so that the subject can be scanned in a lying position.

[0054] It should be noted that in the existing schemes for atomic magnetometer magnetoencephalography scanning, most of them use a wearable magnetoencephalography device worn in a sitting position. This scheme is difficult to limit the shaking of the subject's head during the scanning process, resulting in obvious motion artifacts in the measured signal, which greatly reduces the quality of the acquired magnetoencephalography signal.

[0055] The skeleton 30 provided in the embodiment of the present application can be fixedly connected to the scanning bed through the connecting part 33, so that the subject can be scanned in a supine position. When the subject is in a supine position, the head will basically not shake and will be in a relatively stable state. There will be no obvious motion artifacts caused by changes in the head position during the scanning process, which improves the stability and scanning accuracy of the scanning process to a certain extent. At the same time, since the positions of each detector and the head are relatively fixed during the scanning process, the results of locating the source of neural activity are also more accurate. In addition, in the prior art, the subject wears a wearable brain magnetoencephalogram helmet in a sitting position, which has the defect of head weight. The brain magnetograph scanning device provided in the embodiment of the present application puts the subject in a supine position, which solves the problem of head weight in the prior art.

[0056] In one embodiment of the present application, the skeleton through hole 31 does not need to be an internal thread structure, and the height of the protrusion 32 and the connection method of the connection part 33 to the scanning bed are not limited in the present application.

[0057] Figure 4 FIG. 1 is a schematic diagram of the structure of the module moving part of the magnetoencephalogram scanning device provided in one embodiment of the present application. Figure 4 As shown, the module moving component 40 provided in the embodiment of the present application includes an embedding end 41 and an adjustment end 42, and the module moving component 40 is used to control the distance between the detector slot module 20 and the subject's head.

[0058] It should be noted that the embedding end 41 and the adjustment end 42 are split structures, and the embedding end 41 includes a threaded end 411 and a fixed end 412. The threaded end 411 is an external thread structure, which is used to embed into the skeleton through hole 31 and engage with the skeleton through hole 31 to screw in or out, and control the connection between the module moving part 40 and the skeleton 30. The fixed end 412 has a through circular hole perpendicular to the embedding end 41, and correspondingly, the adjustment end 42 has a through circular hole perpendicular to the adjustment end 42, which is consistent with the size of the circular hole of the fixed end 412. By arranging the circular hole of the fixed end 412 to overlap with the circular hole of the adjustment end 42, a cylinder with a size adapted to the diameter of the circular hole is inserted into the overlapping circular hole to connect the embedding end 41 and the adjustment end 42 together. The recessed portion between the embedding end 41 and the adjustment end 42 clamps the detector slot module 20.

[0059] It should be noted that, in the present application, there is no unified limitation on the structure and connection method of the embedding end 41 and the adjustment end 42, as long as the function of controlling the distance between the detector slot module 20 and the subject's head can be achieved.

[0060] Figure 5 The figure is a partial enlarged structural schematic diagram of the magnetoencephalogram scanning device provided by one embodiment of the present application, in which the module moving part is not inserted into the skeleton through hole. Figure 5As shown, in one embodiment of the present application, after the circular hole of the fixed end 412 of the embedding end 41 inserted from the inner side of the detector slot module 20 is aligned with the circular hole of the adjustment end 42 inserted from the outer side of the detector slot module 20, a small cylinder with the same diameter as the overlapping circular holes is inserted to achieve the connection between the module moving part 40 and the detector slot module 20.

[0061] In the present application, there is no unified limitation on the connection method between the module moving component 40 and the detector slot module 20.

[0062] In one embodiment of the present application, the detector slot module 20 is pushed inward until the end face of the threaded end 411 touches the skeleton 30, and then the adjustment end 42 is rotated to make the embedding end 41 engage with the skeleton through hole 31, and further screwed in to achieve the embedding of the module moving part 40 into the skeleton through hole 31.

[0063] In the present application, there is no uniform limitation on the way in which the module moving component 40 is embedded in the skeleton through hole 31 .

[0064] Figure 6 The figure is a schematic diagram of the structure of the magnetoencephalogram scanning device provided by one embodiment of the present application in a state where the detector is inserted. Figure 6 As shown, at this time, all the detector slot modules 20 are located at the outermost position. After the subject's head enters the magnetoencephalogram scanning device 10, the detector slot modules 20 are pushed inward one by one until the front end of the embedding end 41 touches the frame 30, and then the adjustment end 42 starts to rotate so that the embedding end 41 is engaged with the frame through hole 31, and further rotated until all the detectors touch the subject's head.

[0065] It should be noted that the detector that first contacts the subject's head will be gradually pushed outward as the detector slot module 20 continues to approach the skeleton 30, so the insertion depth of each detector is different in the final state.

[0066] In one embodiment of the present application, after all the detectors are in contact with the subject's head, the module moving component 40 is rotated outward one circle so that all the detectors are withdrawn 1 mm. This not only avoids the discomfort caused by direct contact between the detectors and the subject's head, but also avoids the change of the detector position caused by slight shaking of the subject's head during the scanning process, thereby affecting the brain magnetic scanning results.

[0067] It should be noted that in the present application, there is no uniform limitation on the distance and method of withdrawing the probe, as long as it can avoid the interaction force between the probe and the subject's head causing discomfort to the subject.

[0068] Figure 7 The figure is a schematic diagram of the structure of the head limiting component of the magnetoencephalogram scanning device provided in one embodiment of the present application. Figure 7As shown, arc-shaped grooves are provided at the corners of the detector slot module 20 to accommodate the connection between the head limiting component 50 and the skeleton through hole 31. The head limiting component 50 includes a buffer unit 51, a gasket 52, and a bolt 53, wherein the gasket 52 and the bolt 53 serve as a rigid unit. The buffer unit 51 is a silicone pad structure, and the outermost side of the gasket 52 is a circle of circular ring structure for supporting the buffer unit 51. The middle part of the gasket 52 is a funnel-shaped structure that can support a screw-like structure. The diameter of the buffer unit 51 can be slightly smaller than the outermost diameter of the gasket 52. After the gasket 52 and the bolt 53 are tightened together by screws, the buffer unit 51 can be adhered to the surface of the gasket 52. The diameter of the buffer unit 51 can also be configured to be consistent with the inner diameter of the circular ring structure of the gasket 52, so that the buffer unit 51 is just stuck on the inner side of the circular ring structure of the gasket 52. It should be noted that the thickness of the buffer unit 51 needs to be slightly larger than the thickness of the circular ring structure of the gasket 52, so that after the buffer unit 51 is fixed to the inner side of the circular ring structure of the gasket 52, the outer surface of the buffer unit 51 is in contact with the subject's head, rather than the gasket 52 and other structures directly contacting the subject's head.

[0069] The bolt 53 is a hollow internal thread structure, used to carry a screw-like structure, and the gasket 52 and the bolt 53 can be connected together by a screw, and the outer surface of the bolt 53 is an external thread structure. The buffer unit 51 can reduce the force when the head limiting component 50 contacts the subject's head, avoiding direct contact between the rigid structure and the subject's head, causing discomfort to the subject's head.

[0070] In the present application, there is no uniform limitation on the structure of the head limiting component 50 , as long as it can fix the head position of the subject.

[0071] Figure 8 The figure is a partially enlarged structural diagram of the head stopper of the magnetoencephalogram scanning device provided by one embodiment of the present application, which is inserted into the through hole of the skeleton. Figure 8 As shown, the screw and the gasket 52 that are detachably connected with the gasket 52 are inserted from the inner side of the skeleton through hole 31, and the bolt 53 is inserted from the outer side of the skeleton through hole 31, so that the screw is engaged with the hollow internal thread of the bolt 53, and further screwed in until the screw is completely screwed into the hollow internal thread structure of the bolt 53. Then, the buffer unit 51 is inserted into the inner side of the circular ring structure of the gasket 52. By turning the bolt 53, the length of the bolt 53 screwed into the skeleton through hole 31 is adjusted. The length of the bolt 53 screwed into the skeleton through hole 31 can be adjusted according to the different head contours of the subject, so as to achieve the head position of the subject being fixed for different subjects.

[0072] In one embodiment of the present application, after the subject's head enters the magnetoencephalogram scanning device, the head stopper 50 is rotated inward until the buffer unit 51 contacts the subject's head. After the scan is completed, the head stopper 50 is rotated outward. In this embodiment, four stopper positions, namely front, top, left, and right, are used, which can be increased or decreased according to actual needs, and are not uniformly limited here.

[0073] The existing sitting helmet does not limit the subject's head. During the scanning process, the subject's head is prone to shaking and changing position, causing the position between the detector and the subject's head to change during the scanning process, reducing the stability and scanning accuracy of the scanning process.

[0074] This embodiment actively fixes the subject's head by designing a head limiting component 50, thereby reducing changes in the subject's head position during the scanning process, and even keeping the subject's head position in a fixed position during the scanning process, thereby improving the stability and scanning accuracy of the scanning process.

[0075] Fig. 9 FIG. 1 is a partial enlarged structural diagram of a reset component of a magnetoencephalogram scanning device provided in one embodiment of the present application. Fig. 9 As shown, the reset component 60 provided in one embodiment of the present application is used to reset the detector, and the reset component 60 includes an elastic unit, and the elastic unit includes a fixed end 61 and a reset end 62. The outermost end of the protrusion 32 of the frame 30 has a through hole 321 perpendicular to the direction of the protrusion 32, and the edge of the module through hole 22 has a hook lock structure 221. The elastic unit can be a spring structure, the fixed end 61 is fixedly connected to the through hole 321, and the reset end 62 is fixedly connected to the hook lock structure 221.

[0076] It should be noted that the spring structure of the reset component 60 is in an initial equilibrium state or a contracted state when all detector slot modules 20 are in the outermost position before the magnetoencephalogram scanning. After the subject's head enters the magnetoencephalogram scanning device 10, the detector slot modules 20 are pushed inward one by one until the front end surface of the module moving component 40 touches the skeleton 30. At this time, the spring structure is in a stretched state. If the thrust is removed during the process of pushing the detector slot module 20 inward, the detector slot module 20 will rebound to the outside. In the present application, there is no uniform limitation on the structure of the reset component 60, as long as the function of rapid reset can be achieved.

[0077] After the head scan of the subject is completed, the module moving component 40 is rotated outward, and when the outer teeth of the embedded end 41 are separated from the inner teeth of the frame through hole 31, the remaining stroke can be directly returned to the original position by relying on the elastic unit.

[0078] In this embodiment, in order to reduce the workload, the detector slot module 20 at the back of the subject's head can be fixed to the frame 30 and cannot be moved. The detector slot module 20 at the back can also be set to be movable, the same as other detector slot modules 20, and no unified limitation is made here.

[0079] Fig.10 FIG. 2 is a flow chart of a magnetoencephalography scanning method provided in one embodiment of the present application. Fig.10 As shown, the magnetoencephalography scanning method provided in the embodiment of the present application includes steps S10 to S40.

[0080] Step S10 , utilizing the detector slot module 20 to synchronously control the travel of the detectors carried by the plurality of detector slots 21 .

[0081] Step S20 , using the module moving component 40 to control the distance between the detector and the subject's head, wherein the skeleton 30 is used to support the detector slot module 20 and the subject's head.

[0082] Step S30 , using the head limiting component 50 to fix the subject's head.

[0083] Step S40, using the reset component 60 to reset the detector.

[0084] It should be noted that Fig.10 The magnetoencephalogram scanning method provided in the illustrated embodiment can be applied to the magnetoencephalogram scanning device mentioned in the above-mentioned embodiment. Specifically, in step S10, the magnetoencephalogram scanning device includes a detector slot module 20 having a plurality of detector slots 21. In step S20, the magnetoencephalogram scanning device also includes a skeleton 30 detachably connected to the detector slot module 20 and a module moving component 40 detachably connected to the skeleton 30. In step S30, the magnetoencephalogram scanning device also includes a head limiting component 50 detachably connected to the skeleton 30. In step S40, the magnetoencephalogram scanning device also includes a reset component 60 that cooperates with the detector slot module 20.

[0085] It should be noted that the execution order of the above steps is not fixed. For example, the head limiting component 50 may be used to fix the subject's head first, and then the module moving component 40 may be used to control the distance between the detector and the subject's head.

[0086] The magnetoencephalogram scanning method uses the detector slot module 20 to synchronously control the travel of multiple detectors, thereby improving the scanning efficiency. The module moving component 40 is used to control the distance between the detector and the subject's head, so that each detector is located at the optimal scanning position suitable for different subjects. The head limiting component 50 is used to fix the subject's head so that the subject's head will not slide or shake during the scanning process, thereby improving the stability of the scanning process and the scanning accuracy. The reset component 60 is used to quickly reset the detector, thereby improving the scanning efficiency and the convenience of application.

[0087] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A magnetoencephalogram scanning device, characterized in that: include: A detector slot module having a plurality of detector slots, wherein the number of the detector slot modules is multiple, and the detector slot module is used to synchronously control the travel of the detectors carried by the plurality of detector slots; the detector slot includes a receiving slot, which is located on the surface of the detector slot adjacent to the detector, and is used to carry a fixing component capable of increasing the resistance between the detector and the detector slot; A frame detachably connected to the detector slot module, the frame being used to support the detector slot module and the subject's head; the frame comprising a hollow area penetrating the shell, a plurality of the detector slot modules corresponding to the plurality of the hollow areas one by one, and the detector slot modules being detachably mounted in the hollow area; A module moving part is detachably connected to the skeleton, and is used to control the distance between the detector slot module and the subject's head.

2. The magnetoencephalography scanning device according to claim 1, characterized in that: The skeleton includes a skeleton through hole, the module moving component includes a module moving unit, the module moving unit includes an embedding end and an adjustment end opposite to the embedding end, the embedding end is detachably connected to the skeleton through hole, and the adjustment end is detachably connected to the detector slot module.

3. The magnetoencephalogram scanning device according to claim 1 or 2, characterized in that: Also includes: A reset component that cooperates with the detector slot module, and is used to reset the detector.

4. The magnetoencephalography scanning device according to claim 3, characterized in that: The skeleton includes a protruding portion, the reset component includes an elastic unit, the elastic unit includes a fixed end and a reset end opposite to the fixed end, the fixed end is fixedly connected to the protruding portion, and the reset end is fixedly connected to the detector slot module.

5. The magnetoencephalogram scanning device according to claim 1 or 2, characterized in that: Also includes: A head limiting component detachably connected to the frame is used to fix the subject's head.

6. The magnetoencephalogram scanning device according to claim 5, characterized in that: The head limiting component includes a buffer unit and a rigid unit detachably connected to the buffer unit. The buffer unit is located at one end of the head limiting component that contacts the subject's head and is used to buffer the force when the rigid unit contacts the subject's head.

7. The magnetoencephalogram scanning device according to claim 1 or 2, characterized in that: The detector slot includes an anti-wear groove located at a corner of the detector slot and a surface adjacent to the detector, and is used to reduce wear when the edge of the detector contacts the detector slot.

8. A magnetoencephalography scanning method, characterized in that: The invention is applied to a magnetoencephalogram scanning device including a detector slot module, wherein the detector slot module has a plurality of detector slots, and the number of the detector slot modules is multiple; the detector slot includes a receiving slot, which is located on a surface of the detector slot adjacent to the detector and is used to carry a fixing component capable of increasing the resistance between the detector and the detector slot; The magnetoencephalogram scanning device further comprises a frame detachably connected to the detector slot module and a module moving part detachably connected to the frame; wherein the frame is used to carry the detector slot module and the subject's head; the frame comprises a hollow area penetrating the shell, a plurality of the detector slot modules correspond to the plurality of the hollow areas one by one, and the detector slot module is detachably installed in the hollow area, comprising: Using the detector slot module to synchronously control the travel of the detectors carried by the multiple detector slots; The module moving component is used to control the distance between the detector slot module and the subject's head.

9. The magnetoencephalography scanning method according to claim 8, characterized in that: The magnetoencephalogram scanning device further includes a head limiting component detachably connected to the frame, and further includes: The head limiting component is used to fix the head of the subject.

10. The magnetoencephalography scanning method according to claim 8 or 9, characterized in that: The magnetoencephalogram scanning device further includes a reset component that cooperates with the detector slot module, and further includes: The detector is reset by using the reset component.

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