Magnetic resonance coil device

Abstract

The utility model relates to the technical field of magnetic resonance, in particular to a magnetic resonance coil device. The device is used for receiving magnetic resonance signals from the head of a subject, and comprises a first coil part configured to cover and support the head from the rear side of the head; the two second coil parts are connected to the first coil part at the left side and the right side of the head part respectively and are of a deformable flexible structure, and the two second coil parts are configured to cover the left side and the right side of the head part respectively by being deformed close to the head part; and a third coil part connected to the first coil part at a top side of the head and having a deformable flexible structure, the third coil part being configured to cover the top of the head by deforming close to the head. According to the magnetic resonance coil device provided by the invention, the magnetic resonance coil device has good operation convenience, can be well adapted to various head types, and is beneficial to improving the head magnetic resonance imaging quality.

Description

Technical Field

[0001] This application relates to the field of nuclear magnetic resonance technology, and more particularly to a magnetic resonance coil device. Background Technology

[0002] A magnetic resonance coil unit, mainly composed of coils and a coil carrier, is one of the important components of a magnetic resonance system. It is used to receive magnetic resonance signals from examined areas such as the human head, allowing the magnetic resonance system to process these signals and reconstruct a magnetic resonance image corresponding to the examined area.

[0003] Patent document with publication number CN114114110A (hereinafter referred to as Patent Document 1) discloses a magnetic resonance coil device for the head of a subject, which can be used for magnetic resonance imaging of the temporomandibular joint and / or cochlea of ​​the head.

[0004] However, in Patent Document 1, the abutment component mounted on the two clamping arms of the flipping frame is inconvenient to operate. For example, the operator needs to continuously rotate the operating handle of the abutment component to slowly move its abutment part to the left or right. Therefore, it is not possible to quickly adjust the abutment component from the disassembled state to the abutment state, nor can it quickly adjust the abutment component from the abutment state to the disassembled state. In addition, the flipping frame in Patent Document 1 is not conducive to the large-scale size of the uniform coil device. Furthermore, the two flexible coil components of the coil device in Patent Document 1 cannot cover the top of the subject's head well, so it is not suitable for applications that require the acquisition of head magnetic resonance signals from the top of the head, such as applications for magnetic resonance imaging of the brain. Summary of the Invention

[0005] In order to solve at least one of the above-mentioned technical problems, this application provides a magnetic resonance coil device.

[0006] The magnetic resonance coil device proposed in this application is used to receive magnetic resonance signals from the head of a subject, the device comprising:

[0007] A first coil component is configured to cover and support the head from the rear side;

[0008] Two second coil components are connected to the first coil component on the left and right sides of the head, respectively, and are deformable flexible structures. The two second coil components are configured to cover the left and right sides of the head, respectively, by deforming close to the head.

[0009] A third coil component, connected to the first coil component on the top side of the head, is a deformable flexible structure configured to cover the top of the head by deforming close to the head.

[0010] In some possible implementations, it also includes:

[0011] A fourth coil component removably covers the front side of the head.

[0012] In some possible implementations, the first coil component, the two second coil components, the third coil component, and the fourth coil component define a detection space for receiving the head.

[0013] In some possible implementations, the fourth coil component is detachably coupled to the first coil component.

[0014] In some possible implementations, it also includes:

[0015] Two supports are connected to the first coil component on the left and right sides of the head, respectively, and two second coil components are located between the two supports;

[0016] Two airbags, each supported by one of the two supports, inflate by being inflated, thereby pressing the second coil component toward the head.

[0017] In some possible implementations, the two supports support the fourth coil component on the left and right sides of the head, respectively.

[0018] In some possible implementations, the third coil component is deformed by the fourth coil component pressing against the head, thereby covering the top of the head.

[0019] In some possible implementations, the first coil component includes a rigid first housing and a first coil housed within the first housing, the outer surface of the first housing defining a head support surface that supports the head;

[0020] The second coil component includes a flexible second housing and a second coil housed within the second housing, wherein at least a portion of the second coil extends into the first housing and overlaps with a corresponding portion of the first coil;

[0021] The third coil component includes a flexible third housing and a third coil housed within the third housing, with at least a portion of the third coil extending into the first housing and overlapping with a corresponding portion of the first coil.

[0022] The fourth coil component includes a fourth housing and a fourth coil completely housed within the fourth housing, at least a portion of the fourth housing covering the front side of the head in a manner spaced apart from the head.

[0023] In some possible implementations, the third coil portion has a first side and a second side disposed opposite to each other in the left-right direction of the subject, and the second coil component has a third side and a fourth side disposed opposite to each other in the length direction of the subject;

[0024] The first side overlaps with the third side of one of the second coil components on the inside of the second coil component, and the second side overlaps with the third side of the other second coil component on the inside of the other second coil component, and the two third sides press the first side and the second side toward the head respectively.

[0025] In some possible implementations, based on the overlap between the first side and the third side of one of the second coil components, at least one of the third coils and the corresponding second coil partially overlap each other at the location where the first side and the third side overlap.

[0026] The magnetic resonance coil device provided in this application has excellent ease of operation and can be well adapted to various head shapes, which helps to improve the quality of head magnetic resonance imaging. Attached Figure Description

[0027] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0028] Figure 1 This is a schematic diagram of the magnetic resonance coil device provided in the first embodiment of this application.

[0029] Figure 2 yes Figure 1 The front view.

[0030] Figure 3 yes Figure 1 An exploded view of the magnetic resonance coil device.

[0031] Figure 4 yes Figure 3 A partial structural diagram.

[0032] Figure 5 yes Figure 4 A schematic diagram of the structure after the meshing component and its mounting base on one side have been removed.

[0033] Figure 6 yes Figure 5 A magnified view of a portion of the image.

[0034] Figure 7 yes Figure 4A schematic diagram of the structure after a portion has been removed.

[0035] Figure 8 yes Figure 7 A magnified view of a portion of the image.

[0036] Figure 9 yes Figure 4 A schematic diagram of the structure after the second coil component on one side has been removed.

[0037] Figure 10 yes Figure 9 A magnified view of a portion of the image.

[0038] Figure 11 This is a schematic diagram of the RF coil arrangement in the first to third coil components provided in the embodiments of this application.

[0039] Figure 12 This is a schematic diagram of the magnetic resonance coil device provided in the second embodiment of this application.

[0040] Figure 13 yes Figure 12 Side view.

[0041] Figure 14 yes Figure 12 An exploded view of the magnetic resonance coil device.

[0042] Figure 15 yes Figure 14 Side view.

[0043] Explanation of reference numerals in the attached figures:

[0044] DR1 - Length direction, DR2 - Arrangement direction;

[0045] 1000-Magnetic Resonance Coil Device;

[0046] 100 - First coil component, 200 - Second coil component, 300 - Third coil component, 400 - Fourth coil component, 500 - Locking mechanism;

[0047] 101-First housing, 102-First coil, 103-Head support surface;

[0048] 201-Second housing, 202-Second coil, 200A-Third side, 200B-Fourth side, 201A-Inner side, 201B-Outer side;

[0049] 301 - Third housing, 302 - Third coil, 300A - First side, 300B - Second side;

[0050] 401 - First hole, 402 - Second hole;

[0051] 501-toothed belt, 502-meshing component, 503-track, 504-carriage, 505-shaft;

[0052] 51-First tooth, 51A-First side, 51B-Second side;

[0053] 52 - Second tooth, 52A - Third side, 52B - Fourth side;

[0054] 53 - Interdental clearance;

[0055] 54 - First extending arm, 55 - Second extending arm;

[0056] 1-Support body, 2-Airbag. Detailed Implementation

[0057] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It is understood that, without conflict, some technical means of the various embodiments described herein can be substituted for or combined with each other.

[0058] In the description of this application, the terms "first," "second," etc., are used only to distinguish the described objects and have no sequential or technical meaning. Therefore, objects specified with "first," "second," etc., may explicitly or implicitly include one or more of those objects, and, for example, the term "first element" itself does not imply the existence of a "second element," nor does the term "second element" itself imply the existence of a "first element." Furthermore, words such as "a" or "one" do not indicate a quantity limitation, but rather indicate the presence of at least one, while "multiple" indicates not less than two.

[0059] Figures 1 to 11 A magnetic resonance coil device 1000 (hereinafter, sometimes simply referred to as device 1000) according to a first embodiment of this application is shown. This device receives magnetic resonance signals from the head of a subject and transmits these signals to other components of a magnetic resonance system, enabling the system to obtain a magnetic resonance image of the subject's head based on the signals using image reconstruction techniques. The device 1000 mainly includes a first coil component 100, a second coil component 200, a third coil component 300, and a fourth coil component 400.

[0060] The first coil component 100 is configured to cover and support the subject's head from the rear. In practical applications, the device 1000 can be positioned on the examination table of the magnetic resonance system, with the subject lying supine on the examination table and the subject's head supported on the first coil component 100. Thus, the coils in the first coil component 100 can acquire magnetic resonance signals from behind the subject's head.

[0061] Specifically, the first coil component 100 includes a first housing 101 and a plurality of first coils 102 (e.g., toroidal RF coils or butterfly RF coils) housed (e.g., fully or partially housed) within the first housing 101. During an MRI scan, the first coils 102 are positioned adjacent to the subject's head on the rear side to receive MRI signals from the subject's head with high quality. The first housing 101 has sufficient rigidity to prevent collapse under the pressure of the subject's head during use. The first housing 101 has a head support surface 103 for supporting the subject's head. This head support surface 103 is part of the outer surface of the first housing 101 and is formed as a concave surface complementary to the shape of the back of the subject's head. The aforementioned first coils 102 extend along the extension direction of this concave surface. The head support surface 103 may be a soft surface. In addition, the first housing 101 has a relatively large internal space, which, in addition to housing the first coil 102, also houses a number of electrical components coupled to the first coil 102. These electrical components include, for example, a circuit board on which capacitors and inductors are mounted.

[0062] The second coil component 200 is a deformable flexible structure, and two of them are arranged. These two second coil components 200 are spaced apart along the left-right direction of the subject and are mechanically connected to the first coil component 100 on the left and right sides of the subject's head, respectively. Specifically, the left second coil component 200 is configured to cover the left side of the subject's head by deforming towards the right second coil component 200, i.e., deforming closer to the subject's head; the right second coil component 200 is configured to cover the right side of the subject's head by deforming towards the left second coil component 200, i.e., deforming closer to the subject's head. Thus, the coils within the two second coil components 200 can respectively acquire magnetic resonance signals from the subject's head on the left and right sides. Furthermore, the second coil component 200 has an inner surface 201A facing the subject's head and an outer surface 201B facing away from the subject's head.

[0063] Specifically, the second coil component 200 includes a deformable, flexible second housing 201 and a plurality of second coils 202 housed within the second housing 201, the second coils 202 being deformable in response to deformation of the second housing 201. During an MRI scan, the two second coil components 200 can be positioned in a deformed configuration, respectively, to adequately (e.g., substantially completely fitted) cover the left and right sides of the subject's head, such that the second coils 202 within them are adjacent to the subject's head on the left and right sides, respectively, to receive MRI signals from the subject's head with high quality.

[0064] The third coil component 300 is also a deformable flexible structure and is mechanically connected to the first coil component 100 on the top side of the subject's head. In use, the third coil component 300 can cover the top of the subject's head to acquire magnetic resonance signals from the top side.

[0065] Specifically, the third coil component 300 includes a deformable, flexible third housing 301 and a plurality of third coils 302 housed within the third housing 301. The third coils 302 can deform along with the third housing 301. During an MRI scan, the third coil component 300 can be deformed to better cover the top of the subject's head, thereby ensuring that the third coils 302 are adjacent to the subject's head on the top side, thus receiving MRI signals from the subject's head with high quality.

[0066] The second housing 201 and the third housing 301 may be primarily formed of fabric, non-woven fabric or leather, and may have a certain degree of toughness.

[0067] The fourth coil component 400 is configured to engage with the first coil component 100 by moving along the length direction DR1 toward the top of the subject's head, and to disengage from the first coil component 100 by moving along the length direction DR1 away from the top of the head. When the fourth coil component 400 engages with the first coil component 100, a portion of the fourth coil component 400 (i.e., Figure 1 The top portion of the fourth coil component 400 is spaced apart and covers the front of the subject's head, thereby acquiring magnetic resonance signals from the subject's head on the front (facial side).

[0068] Specifically, the fourth coil component 400 includes a fourth housing (not shown) and a plurality of fourth coils (not shown) fully housed within the fourth housing. The top portion of the fourth coil component 400 is spaced from the first coil component 100 (more specifically, the head support surface 103 defined by the first housing 101) by a greater distance than the front-to-back dimensions of a typical head shape, so that the device 1000 can accommodate as many subjects as possible with various head shapes. During an MRI scan, the fourth coil component 400 is moved along the length direction DR1 toward the top of the subject's head, thereby engaging (e.g., locking) the fourth coil component 400 with the first coil component 100. In this engaged state, the flexible third coil 302 is deformed by the fourth coil component 400 pressing toward the top of the subject's head, thereby better covering the top of the subject's head. In addition, the top portion of the fourth coil component 400 covers the front side of the subject's head at intervals, so that the fourth coil housed in the top portion can be used to collect MRI signals from the front of the subject's head using the fourth coil.

[0069] Similar to the first housing 101, the fourth housing also possesses sufficient rigidity. On one hand, the rigid fourth housing can apply sufficient pressure to the flexible third coil component 300, ensuring that the third coil component 300 is stably held at the top of the subject's head, thereby guaranteeing the quality of the MRI examination. On the other hand, the rigid fourth housing can firmly support the fourth coil within it without collapsing, thus maintaining the stable position of the fourth coil relative to the subject's head during the MRI examination, further ensuring the quality of the MRI examination.

[0070] In use, the first coil component 100, the second coil component 200, the third coil component 300, and the fourth coil component 400 define a space for accommodating the subject's head.

[0071] In other embodiments, the fourth coil component 400 can be replaced by an element that does not have an RF coil (fourth coil) at all, but has all the other functions of the fourth coil component 400 except for the function of acquiring magnetic resonance signals. For example, the fourth coil component 400 can be replaced by a simple fourth housing. In other words, the RF coil in the fourth coil component 400 can be completely omitted; however, if the RF coil is completely omitted, it is not appropriate to refer to it as the fourth coil component 400, but rather as an element for pressing or holding the third coil component 300.

[0072] The first housing 101 and the fourth housing may be primarily made of plastic.

[0073] A portion of the fourth coil component 400 has two first holes 401 for exposing the subject's eyes and a second hole 402 for exposing the subject's mouth, in order to provide a better user experience for the subject. Furthermore, two annular fourth coils are arranged around the first holes 401, and another annular fourth coil is arranged around the fourth hole.

[0074] Please see Figure 11 In some embodiments, each second coil component 200 has four second coils 202, and a portion of two of the second coils 202 extends into the first housing 101, overlapping with the corresponding first coil 102 for decoupling. The third coil component 300 has four third coils 302, and a portion of two of the third coils 302 extends into the first housing 101, overlapping with the corresponding first coil 102 for decoupling. This design allows the coils in the first coil component 100 and the second coil component 200, and the coils in the first coil component 100 and the third coil component 300, to work well together to form a high-performance (e.g., high decoupling performance) RF coil array, thereby helping the device 1000 obtain high-quality magnetic resonance signals.

[0075] The device 1000 also includes two locking mechanisms 500 corresponding to the two second coil components 200, each locking mechanism 500 including two toothed bands 501 and an engaging member 502. The toothed bands 501 are disposed on the outer side 201B and extend around the subject's body length direction DR1. The engaging member 502 is connected to the first coil component 100 in a manner that allows it to rotate around the body length direction DR1, and the engaging member 502 is located on the outer side 201B of the second coil component 200, and can engage with different parts (i.e., different first locking teeth 51) of the toothed bands 501 at multiple positions around the body length direction DR1. The locking mechanism 500 has a locked state and a released state. In the locked state, the engaging member 502 engages with the toothed belt 501, and the second coil member 200 covers the subject's head and is pressed towards the subject's head by the engaging member 502. In the released state, the engaging member 502 disengages from the toothed belt 501, thereby allowing the second coil member 200 to leave the subject's head. With this design, during use, the operator can conveniently hold the second coil member 200 in the position covering the subject's head using the locking mechanism 500.

[0076] More specifically, the engaging member 502 is connected to the first housing 101 of the first coil member 100 via a pivot pin (not shown), which extends along the length direction DR1 and defines the rotation axis 505 of the engaging member 502. The toothed belt 501 includes a plurality of first teeth 51 arranged sequentially in a direction surrounding the length direction DR1. Each first tooth 51 has a first side surface 51A and a second side surface 51B disposed opposite each other in the arrangement direction DR2 of the plurality of teeth, wherein the first side surface 51A is more forward of the subject than the second side surface 51B. Furthermore, the first side surface 51A defines a first acute angle (not shown) with the arrangement direction DR2, and the second side surface 51B defines a second acute angle (not shown) with the arrangement direction DR2, the opening direction of the first and second acute angles facing the rear of the subject. When the locking mechanism 500 is in the locked state, the engaging member 502 engages with the second side surface 51B of the first tooth 51.

[0077] With this design, on the one hand, the operator only needs to rotate the engaging component 502 toward the subject's head so that after the second coil component 200 comes into contact with the subject's head at the appropriate position, the engaging component 502 will automatically engage with the toothed belt 501 (more specifically, the first locking tooth 51 at the corresponding position on the toothed belt 501), and the reverse force of the subject's head on the second coil component 200 will stably maintain the engagement between the engaging component 502 and the toothed belt 501. On the other hand, when the locking mechanism 500 is in the locked state, the operator can press the second coil component 200 toward the subject's head to easily disengage the engaging component 502 from the toothed belt 501, thus switching the locking mechanism 500 to the released state.

[0078] Understandably, this locking mechanism 500 configuration can adapt to different head sizes, thus ensuring the versatility of the device 1000 for different subjects. During use, the engagement position of the meshing component 502 and the toothed belt 501 depends on the size of the head being examined.

[0079] Furthermore, the first acute angle is smaller than the second acute angle. This design helps to increase the density of the first locking teeth 51 while ensuring the structural strength of each first locking tooth 51, thereby increasing the number of locking positions of the locking mechanism 500. For example, the first acute angle can be 45°, and the second acute angle can be 80°.

[0080] The engaging member 502 has a second locking tooth 52, which has a third side and a fourth side. When the locking mechanism 500 is in the locked state, the third side and the fourth side are arranged opposite each other in the arrangement direction DR2, with the third side being closer to the front of the examinee than the fourth side. The third side and the arrangement direction DR2 define a third acute angle (omitted in the illustration), and the second side 51B and the arrangement direction DR2 define a fourth acute angle (omitted in the illustration). The opening directions of the third acute angle and the third acute angle face the front of the examinee.

[0081] Furthermore, the included angle of the third acute angle is greater than that of the fourth acute angle. With this design, even if the size of the second locking tooth 52 (especially the size of the arrangement direction DR2) is set to be relatively small, the second locking tooth 52 can still be guaranteed to have sufficient structural strength.

[0082] When the locking mechanism 500 is in the locked state, the third side of the engaging member 502 engages with the second side 51B of the first tooth 51.

[0083] The included angle of the third acute angle is equal to that of the second acute angle, and the included angle of the fourth acute angle is equal to that of the first acute angle. A tooth gap 53 is formed between each pair of adjacent first teeth 51, defined by the first side surface 51A of one first tooth 51 and the second side surface 51B of the other first tooth 51. In the arrangement direction DR2, the size of this tooth gap 53 is smaller than the size of the second tooth 52. In this way, the second tooth 52 can be tightly engaged between two adjacent first teeth 51, which helps to improve the meshing stability of the meshing component 502 and the toothed belt 501.

[0084] The third coil component 300 has a first side portion 300A and a second side portion 300B arranged opposite each other in the left-right direction of the subject. The second coil component 200 has a third side portion 200A and a fourth side portion 200B arranged opposite each other in the length direction DR1 of the subject. When the device 1000 is in use for performing an MRI examination on the subject's head, the first side portion 300A overlaps with the third side portion 200A of the left second coil component 200 on the inner side of the left second coil component 200 (i.e., the side of the second coil component 200 facing the subject's head), and the second side portion 300B overlaps with the third side portion 200A of the right second coil component 200 on the inner side of the right second coil component 200. Under the action of the aforementioned locking mechanism 500, the two third side portions 200A press the first side portion 300A and the second side portion 300B toward the patient's head, respectively. This design enhances the fit between the third coil component 300 and the patient's head, thereby improving the quality of the MRI scan.

[0085] In some embodiments, when the device 1000 is in use for performing a magnetic resonance examination on the head of a subject, based on the overlap of the first side 300A of the third coil component 300 with the third side 200A of the left second coil component 200, and the overlap of the second side 300B of the third coil component 300 with the third side 200A of the left second coil component 200, at least one third coil 302 and the corresponding second coil 202 partially overlap each other at the location where the first side 300A and the corresponding third side 200A overlap to decouple, and at least another third coil 302 and the corresponding second coil 202 overlap each other at the location where the second side 300B and the corresponding third side 200A overlap to decouple.

[0086] In addition, the locking mechanism 500 also includes a retaining structure that connects the engaging member 502 to the toothed belt 501. This retaining structure prevents the engaging member 502 from completely separating from the toothed belt 501 and allows the engaging member 502 and the toothed belt 501 to move relative to each other in the alignment direction DR2.

[0087] The retaining structure includes a track 503 and a carriage 504. The track 503 is disposed on the side of the toothed belt 501, more specifically between the two toothed belts 501, and extends in a direction about the body length direction DR1 (also the arrangement direction DR2). The carriage 504 is disposed on the side of the engaging member 502 and engages with the track 503.

[0088] More specifically, both toothed belts 501 and the track 503 are formed on a plate-like member (not marked), wherein the track 503 is an elongated hole penetrating the plate-like member. The carriage 504 is formed in a T-shape with two mutually perpendicular extending arms, wherein the first extending arm 54 extends from the engaging member 502 and is slidably inserted into the elongated hole, and the middle portion of the second extending arm 55 is connected to the protruding end of the first extending arm 54 on the side of the elongated hole opposite to the engaging member 502. Furthermore, the first extending arm 54 has a length greater than the thickness of the plate member, thereby, depending on the length of the first extending arm 54, the elongated hole allows the carriage 504 and the further engaging member 502 to move within a predetermined range relative to the toothed belt 501 in directions away from and towards the subject's head (perpendicular to the alignment direction DR2), thereby disengaging the engaging member 502 from the toothed belt 501 from their mutually engaged state.

[0089] In some embodiments, the fourth coil component 400 can be configured such that, on the one hand, after the two second coil components 200 respectively cover the left and right sides of the subject's head, and the locking mechanisms 500 on both sides are activated and in the aforementioned locked state, it engages with the first coil component 100 by moving along the length direction DR1 toward the top of the subject's head; on the other hand, if the locking mechanisms 500 are accidentally unlocked (e.g., due to an unintended movement of the subject's head, causing one or both locking mechanisms 500 to unlock unintentionally), the second coil components 200 may deform away from the subject's head under their own elastic restoring force, and the fourth coil component 400 can suppress such away deformation by blocking the second coil portion 200. For example, see [link to documentation]. Figure 1 and Figure 3 The left and right sides of the fourth coil component 400 can be configured with downwardly extending guards to prevent the second coil component 200 from undergoing the aforementioned moving-away deformation. In this way, even if the aforementioned accident occurs during use, the quality of the magnetic resonance image can still be guaranteed to a certain extent because the moving-away of the second coil component 200 is suppressed.

[0090] Next, please see Figures 12 to 15 12 to Figure 15 A magnetic resonance coil device 1000 according to a second embodiment of this application is shown, which has a similar structure to the magnetic resonance coil device 1000 in the first embodiment. It can be understood with reference to the description of the first embodiment. For simplicity, identical or similar components are given the same or similar reference numerals, and repetitive detailed descriptions of their identical parts are omitted. Hereinafter, the differences between this embodiment and the first embodiment are described in detail.

[0091] In this embodiment, the fourth coil component 400 is configured to move from top to bottom, that is, from the front side of the subject's head (or the front side of the face) to the rear side, and is mounted to the first coil component 100 via a snap-fit ​​mechanism (not marked), and the fourth coil component 400 is allowed to move from bottom to top and separate from the first coil component 100 by unlocking the snap-fit ​​mechanism.

[0092] In this embodiment, the magnetic resonance coil device 1000 further includes two supports 1 and two air bladders 2 supported by the two supports 1 respectively. The two supports 1 are connected to the first coil component 100 on the left and right sides of the subject's head, respectively, and two second coil components 200 are located between the two supports 1. In use, the air bladders 2 are inflated by being inflated, thereby pressing and deforming the second coil components 200 toward the head.

[0093] In some embodiments, the support 1 may be formed as a plate and integral with the first coil housing 101.

[0094] The top profile of the support 1 is formed to correspond to the profiles on both sides of the bottom of the fourth coil component 400, so that the two supports 1 can stably support the fourth coil component 400 on the left and right sides of the subject's head respectively during use.

Claims

1. A magnetic resonance coil device for receiving magnetic resonance signals from the head of a subject, characterized in that, The device includes: A first coil component is configured to cover and support the head from the rear side; Two second coil components are connected to the first coil component on the left and right sides of the head, respectively, and are deformable flexible structures. The two second coil components are configured to cover the left and right sides of the head, respectively, by deforming close to the head. A third coil component, connected to the first coil component on the top side of the head, is a deformable flexible structure configured to cover the top of the head by deforming close to the head.

2. The apparatus according to claim 1, characterized in that, Also includes: A fourth coil component removably covers the front side of the head.

3. The apparatus according to claim 2, characterized in that, The first coil component, the two second coil components, the third coil component, and the fourth coil component define a space for receiving the head.

4. The apparatus according to claim 2, characterized in that, The fourth coil component is detachably coupled to the first coil component.

5. The apparatus according to claim 2, characterized in that, The third coil component is deformed by being pressed against the head by the fourth coil component, thereby covering the top of the head.

6. The apparatus according to claim 2, characterized in that, Also includes: Two supports are connected to the first coil component on the left and right sides of the head, respectively, and two second coil components are located between the two supports; Two airbags, each supported by one of the two supports, inflate by being inflated, thereby pressing the second coil component toward the head.

7. The apparatus according to claim 6, characterized in that, The two supports respectively support the fourth coil component on the left and right sides of the head.

8. The apparatus according to any one of claims 2 to 7, characterized in that, The first coil component includes a first housing and a first coil housed within the first housing, the outer surface of the first housing defining a head support surface that supports the head; The second coil component includes a flexible second housing and a second coil housed within the second housing, wherein at least a portion of the second coil extends into the first housing and overlaps with a corresponding portion of the first coil; The third coil component includes a flexible third housing and a third coil housed within the third housing, with at least a portion of the third coil extending into the first housing and overlapping with a corresponding portion of the first coil. The fourth coil component includes a fourth housing and a fourth coil completely housed within the fourth housing, at least a portion of the fourth housing covering the front side of the head in a manner spaced apart from the head.

9. The apparatus according to claim 8, characterized in that, The third coil portion has a first side and a second side that are arranged opposite to each other in the left-right direction of the subject, and the second coil component has a third side and a fourth side that are arranged opposite to each other in the length direction of the subject; The first side overlaps with the third side of one of the second coil components on the inside of the second coil component, and the second side overlaps with the third side of the other second coil component on the inside of the other second coil component, and the two third sides press the first side and the second side toward the head respectively.

10. The apparatus according to claim 9, characterized in that, Based on the overlap between the first side and the third side of one of the second coil components, at least one of the third coils and the corresponding second coil partially overlap each other at the position where the first side and the third side overlap.

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