CN220530009U - Scanning mattress, scanning bed and magnetic resonance scanning system - Google Patents
Scanning mattress, scanning bed and magnetic resonance scanning system Download PDFInfo
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- CN220530009U CN220530009U CN202320942122.7U CN202320942122U CN220530009U CN 220530009 U CN220530009 U CN 220530009U CN 202320942122 U CN202320942122 U CN 202320942122U CN 220530009 U CN220530009 U CN 220530009U
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- 238000000034 method Methods 0.000 description 6
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- 238000002595 magnetic resonance imaging Methods 0.000 description 5
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- 239000004642 Polyimide Substances 0.000 description 2
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Abstract
The present application relates to a scanning mattress, a scanning bed and a magnetic resonance scanning system. Wherein, the scanning mattress includes: an air cushion bed body, wherein the air cushion bed body comprises at least one air cushion, and the target surface of the air cushion is used for contacting and surrounding a part to be scanned; each air cushion is provided with an air bag and an air valve, and the air valve is used for adjusting the air flow of the air bag; the controller is respectively connected with each air valve to respectively adjust the opening degree of each air valve; a coil assembly including a plurality of coil units; the coil unit is arranged on the target surface of the air cushion to receive magnetic resonance signals for the part to be scanned. The scanning mattress provided by the application can improve the scanning effect.
Description
Technical Field
The application relates to the technical field of medical equipment, in particular to a scanning mattress, a scanning bed and a magnetic resonance scanning system.
Background
With the development of medical scanning techniques, magnetic resonance scanning techniques have emerged. At present, when a local receiving coil such as a head and neck coil, a spine coil, a knee coil and the like is used for whole body examination magnetic resonance scanning, the local receiving coil cannot adapt to the change of a target object and cannot be well attached to the target position under the condition that the target object cannot stay still for a long time, and motion artifact can occur in an image obtained by scanning, so that the image quality is affected.
The existing magnetic resonance scanning method or the traditional method has the problems of poor scanning effect and the like.
Disclosure of Invention
In view of the foregoing, it is desirable to provide a scanning mattress, a scanning bed, and a magnetic resonance scanning system that can improve the scanning effect.
To achieve the above object, in a first aspect, embodiments of the present application provide a scanning mattress, including:
an air cushion bed body, wherein the air cushion bed body comprises at least one air cushion, and the target surface of the air cushion is used for contacting and surrounding a part to be scanned; each air cushion is provided with an air bag and an air valve, and the air valve is used for adjusting the air flow of the air bag;
the controller is respectively connected with each air valve to respectively adjust the opening degree of each air valve;
a coil assembly including a plurality of coil units; the coil unit is arranged on the target surface of the air cushion to receive magnetic resonance signals for the part to be scanned.
In one embodiment, the coil unit is a radio frequency coil unit; the radio frequency coil units are distributed in an array.
In one embodiment, the coil assembly is disposed on the target surface of the cushion in a printed or adhesive manner, and the coil assembly is capable of flexing to accommodate deformation of the target surface of the cushion.
In one embodiment, the target surface of the cushion is made of a flexible substrate.
In one embodiment, the scanning mattress further comprises:
the control end of the air source device is connected with the controller, and the air supply end of the air source device is connected with each air valve one by one through an independent air duct.
In one embodiment, the air source device is an air pump.
In one embodiment, the air cushions are mutually independent and are sequentially arranged along the length direction of the air cushion bed body; the air cushion comprises a plurality of air bags which are communicated with each other.
In one embodiment, an air cushion bed comprises:
the magnetic resonance signals of the head and neck scanning area are received by each coil unit arranged on the first air cushion;
the second air cushion is arranged in the trunk and upper limb scanning area, and magnetic resonance signals of the trunk and upper limb scanning area are received through each coil unit arranged on the second air cushion;
the third air cushion is arranged in the leg scanning area, and magnetic resonance signals of the leg scanning area are received through each coil unit arranged on the third air cushion;
and the fourth air cushion is arranged in the foot scanning area, and magnetic resonance signals of the foot scanning area are received by each coil unit arranged on the fourth air cushion.
In a second aspect, embodiments of the present application provide a scanning bed comprising a scanning mattress as described above; the scanning bed also comprises a bed board, and the bed board is used for supporting the scanning mattress.
In a third aspect, embodiments of the present application provide a magnetic resonance scanning system comprising a scanning mattress as described above; the magnetic resonance scanning system further comprises a computer device connected between the controller and the coil assembly.
The scanning mattress, the scanning bed and the magnetic resonance scanning system provided above, wherein the scanning mattress comprises: the air cushion bed body comprises at least one air cushion, the target surface of the air cushion is used for contacting and surrounding a part to be scanned, and the air cushion can play a role in fixing a scanned object; each air cushion is provided with an air bag and an air valve, and the air valve is used for adjusting the air flow of the air bag; the controller is respectively connected with each air valve to respectively adjust the opening of each air valve, so that the target surface of the air cushion is more attached to the part to be scanned; a coil assembly including a plurality of coil units; the coil unit is arranged on the target surface of the air cushion to receive magnetic resonance signals aiming at the part to be scanned, the coil unit is attached to the surface of the part to be scanned in the mode, the sensitivity of the receiving coil and the signal-to-noise ratio of an imaging image obtained by scanning are improved, the artifact problem caused by movement can be reduced, and then the imaging effect can be improved.
Drawings
In order to more clearly illustrate the technical solutions of embodiments or conventional techniques of the present application, the drawings required for the descriptions of the embodiments or conventional techniques will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic diagram of the structure of a scanning mattress in one embodiment;
FIG. 2 is a schematic air cushion diagram of a scanning mattress in one embodiment;
FIG. 3 is a schematic view of another embodiment of a scanning mattress;
FIG. 4 is a schematic view of a scanning mattress in yet another embodiment;
FIG. 5 is a schematic diagram of the division of coil units in one embodiment;
fig. 6 is an internal structural diagram of a computer device in one embodiment.
Detailed Description
In order to facilitate an understanding of the present application, a more complete description of the present application will now be provided with reference to the relevant figures. Examples of the present application are given in the accompanying drawings. This application may, however, be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
It will be understood that the terms "first," "second," and the like, as used herein, may be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish one element from another element.
Spatially relative terms, such as "under", "below", "beneath", "under", "above", "over" and the like, may be used herein to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use and operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements or features described as "under" or "beneath" other elements would then be oriented "on" the other elements or features. Thus, the exemplary terms "below" and "under" may include both an upper and a lower orientation. Furthermore, the device may also include an additional orientation (e.g., rotated 90 degrees or other orientations) and the spatial descriptors used herein interpreted accordingly.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or be connected to the other element through intervening elements. Further, "connection" in the following embodiments should be understood as "electrical connection", "communication connection", and the like if there is transmission of electrical signals or data between objects to be connected.
As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," and/or the like, specify the presence of stated features, integers, steps, operations, elements, components, or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, or groups thereof. Also, the term "and/or" as used in this specification includes any and all combinations of the associated listed items.
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In one embodiment, as shown in fig. 1, a scanning mattress is provided, the scanning mattress comprising:
an air pad bed 110, the air pad bed 110 including at least one air pad, a target surface of the air pad for contacting and surrounding a portion to be scanned; each air cushion is provided with an air bag 112 and an air valve 114, and the air valve 114 is used for adjusting the air flow of the air bag 112;
the controller 120 is respectively connected with the air valves 114 to respectively adjust the opening degrees of the air valves 114;
a coil assembly including a plurality of coil units 130; the coil unit 130 is disposed on a target surface of the air cushion to receive magnetic resonance signals for a region to be scanned.
Specifically, the air cushion bed 110 may include a plurality of air cushions, and the number of the air cushions may be set according to actual needs; the target surface of the air cushion may include an upper surface of the air cushion, and the target surface of the air cushion may contact a portion to be scanned of the scan object, for example, the scan object may lie on the air cushion bed 110 or lie on the air cushion bed 110 such that the portion to be scanned is sufficiently contacted with the target surface of the mattress, and the target surface of the mattress may wrap the portion to be scanned; the part to be scanned may include at least one part of head and neck, trunk, upper limb, leg, foot, etc. of the scanned object. The controller 120 can adjust the opening of the air valve 114 of each air cushion respectively, and adjust the inflation and deflation of the air bag 112 according to the body type of the scanned object, so as to adjust the density of the filling air of each air cushion respectively, so that the target surface of the air cushion is more attached to the part to be scanned. Wherein the coil assembly includes a plurality of coil units 130, for example, the coil assembly may be a coil array formed of the plurality of coil units 130, and the target surface of the air cushion is provided with the plurality of coil units 130; each coil unit 130 may be a receiving coil unit, and may be located on an inner surface of the target surface or may be located on an outer surface of the target surface, so long as the receiving coil unit is capable of receiving a corresponding magnetic resonance signal; each coil unit 130 on the target surface can receive the magnetic resonance signal at the position to be scanned under the condition that the target surface of the air cushion is attached to the position to be scanned, so that the sensitivity of the receiving coil is improved.
In some examples, the controller 120 may regulate the opening of each valve 114 in stages in gear, or may regulate the opening of each valve 114 in percentage. Each coil unit 130 may be a surface coil unit, that is, a receiving coil disposed on a surface of a portion to be scanned to be imaged; the magnetic resonance signals received at the region to be scanned by the respective coil units 130 may be used for magnetic resonance imaging of the region to be scanned.
The scanning mattress of the embodiment of the application comprises: the air cushion bed body comprises at least one air cushion, wherein the target surface of the air cushion is used for contacting and surrounding a part to be scanned, and the air cushion can play a role in fixing a scanned object; each air cushion is provided with an air bag 112 and an air valve 114, and the air valve 114 is used for adjusting the air flow of the air bag 112; the controllers are respectively connected with the air valves 114 to respectively adjust the opening degrees of the air valves 114, so that the target surface of the air cushion is more attached to the part to be scanned; a coil assembly including a plurality of coil units; the coil unit is arranged on the target surface of the air cushion to receive magnetic resonance signals aiming at the part to be scanned, the coil unit is attached to the surface of the part to be scanned in the mode, the sensitivity of the receiving coil and the signal-to-noise ratio of an imaging image obtained by scanning are improved, the artifact problem caused by movement can be reduced, and then the imaging effect can be improved.
In one embodiment, the coil unit 130 is a radio frequency coil unit; the radio frequency coil units are distributed in an array.
In particular, the coil unit 130 may be a radio frequency coil unit, for example, a radio frequency receiving coil unit, for receiving radio frequency signals. Each radio frequency coil unit may be distributed in an array, a plurality of radio frequency coil units may be arranged along a plane, each coil unit is spread and distributed along at least one direction (for example, spread and distributed in a rectangular shape along two directions), and an included angle between the two distribution directions of the plurality of coil units may be any value between 0 ° and 180 °. By combining the RF coil units in an array, a high signal-to-noise ratio is achieved while a large Field of View (FoV) is achieved. The radio frequency signals received by the radio frequency coil units for the part to be scanned can be further transmitted through corresponding electronic receiving channel circuits.
In one embodiment, the coil assembly is disposed on the target surface of the cushion in a printed or adhesive manner, and the coil assembly is capable of flexing to accommodate deformation of the target surface of the cushion.
Specifically, the target surface of the air cushion may be used as an elastic substrate (e.g., a flexible substrate), and a flexible conductive material is formed on the elastic substrate by printing or pasting, so that a coil assembly is formed on the target surface of the air cushion, each coil unit 130 of the coil assembly is further attached to the target surface of the air cushion, and the coil assembly can be correspondingly bent along with deformation of the target surface so as to attach to the portion to be scanned.
In some examples, printing may be implemented using 3D Printing, spray Printing, thermal transfer Printing, and the like. The attachment may employ an adhesive to secure the coil assembly to the target surface of the cushion.
In one embodiment, the target surface of the cushion is made of a flexible substrate.
Specifically, as shown in fig. 2, the target surface of the air cushion may be made of a flexible substrate, and thus may be correspondingly deformed based on the shape of the portion to be scanned to conform to the portion to be scanned, and the portion to be scanned may include at least one of a head, a shoulder, a waist, a hip, a thigh, a shank, and an ankle.
In some examples, the flexible substrate may employ at least one of polyvinyl alcohol (PVA), polyester (PET), polyimide (PI), polyethylene naphthalate (PEN), and the like.
In one embodiment, as shown in fig. 3, the scanning mattress further comprises:
the air source device 310, the control end of the air source device 310 is connected with the controller 120, and the air supply end of the air source device 310 is connected with each air valve 114 one by one through an independent air duct 320.
Specifically, the controller 120 is connected to the control end of the air source device 310, so as to control the air source device 310 to inflate each air bag 112 through the air supply end, the air duct 320 and the air valve 114, so that each air cushion has sufficient supporting and fixing effects on the scanned object.
In one embodiment, the air supply device 310 is an air pump.
Specifically, the air source device 310 may be an air pump, which may be an electric air pump, for inflating air, such as air, into each air bag 112 through the air supply end, the air guide tube 320, and the air valve 114 under the control of the controller 120.
In one embodiment, the air cushions are independent of each other and are sequentially arranged along the length direction of the air cushion bed body 110; the cushion includes a plurality of interconnected cells 112.
Specifically, each air cushion may be an independent air cushion, and the controller 120 may perform inflation and deflation control on each air cushion separately; each air cushion can be sequentially arranged along the length direction of the air cushion bed body 110 so as to respectively adjust the air cushions aiming at different parts to be scanned of a scanning object, the scanning object is not required to move, and the scanning efficiency and applicability are improved. The air cushion can comprise a plurality of mutually communicated air bags 112, so that the air circulation speed in the air cushion is slowed down, the deformation speed of the air cushion is reduced, and the air cushion has better stability.
In some examples, the air pad bed 110 may include three or more air pads arranged in sequence along the length direction of the air pad bed 110, for example, the air pad bed 110 may include four air pads.
In one embodiment, as shown in fig. 4, the air-cushion bed 110 includes:
the first air cushion 410 is arranged in the head and neck scanning area, and magnetic resonance signals of the head and neck scanning area are received by the coil units 130 arranged on the first air cushion 410;
the second air cushion 420 disposed in the trunk and upper limb scanning area, and the magnetic resonance signals of the trunk and upper limb scanning area are received by each coil unit 130 disposed on the second air cushion 420;
a third air cushion 430 disposed in the leg scan region, the magnetic resonance signals of the leg scan region being received by the coil units 130 disposed on the third air cushion 430;
the fourth air cushion 440 disposed in the foot scanning area, the magnetic resonance signals of the foot scanning area are received through the coil units 130 disposed on the fourth air cushion 440.
Specifically, the air cushion bed 110 may include four air cushions, where the first air cushion 410 may be disposed in a head and neck scanning area, and each coil unit 130 disposed on the first air cushion 410 may receive magnetic resonance signals of the head and neck scanning area, so as to realize scanning of the head and neck area of the scanned object; the second air cushion 420 may be disposed in a trunk and upper limb scanning area, and each coil unit 130 disposed on the second air cushion 420 may receive magnetic resonance signals of the trunk and upper limb scanning area, so as to realize scanning of the trunk and upper limb area of the scanned object; the third air cushion 430 may be disposed in the leg scanning area, and each coil unit 130 disposed on the third air cushion 430 may receive magnetic resonance signals of the leg scanning area, so as to realize scanning of the leg area of the scanning object; the fourth air cushion 440 may be disposed in the foot scanning area, and each coil unit 130 disposed on the fourth air cushion 440 may receive magnetic resonance signals of the foot scanning area, so as to scan the foot area of the scanned object.
In some examples, the magnetic resonance signals received by each coil unit 130 disposed on the first cushion 410 for the head and neck scan region may be used for magnetic resonance imaging for the head and neck region of the scan subject; the magnetic resonance signals received by the coil units 130 disposed on the second air cushion 420 in the trunk and upper limb scan region can be used for performing magnetic resonance imaging on the trunk and upper limb region of the scan subject; the magnetic resonance signals of the leg scan region received by each coil unit 130 disposed on the third air pad 430 may be used for magnetic resonance imaging of the leg region of the scan subject; the magnetic resonance signals of the foot scanning area received by the coil units 130 provided on the fourth air cushion 440 may be used for magnetic resonance imaging of the foot area of the scanning object.
In some examples, as shown in fig. 5, which is a schematic view of the lamination of each coil unit 130 on the target surface, the dimensions of the first air cushion 410, the second air cushion 420, the third air cushion 430, and the fourth air cushion 440 may be specifically set based on the size of the corresponding area. When scanning is performed, for different parts to be scanned, corresponding coil units can be selected in the scanning tabs to output corresponding scanning instructions, for example, the part to be scanned is selected through scanning sequence parameters, and the controller 120 controls the air source device 310 and the air valve 114 based on the received scanning instructions, so that the air bags 112 corresponding to the air cushion with the coil units 130 on the target surface wrap the parts to be scanned, and further segmented and whole-body scanning is realized.
In one embodiment, a scanning bed is provided, the scanning bed comprising a scanning mattress as described above; the scanning bed also comprises a bed board, and the bed board is used for supporting the scanning mattress.
Specifically, the scanning bed can comprise a bed plate and the scanning mattress, and a scanning object can lie flat, lie flat or lie sideways on the scanning bed to scan the corresponding part to be scanned.
In one embodiment, a magnetic resonance scanning system is presented, the magnetic resonance scanning system comprising a scanning mattress as described above; the magnetic resonance scanning system further comprises a computer device connected between the controller 120 and the coil assembly.
Specifically, the computer device may issue a corresponding instruction to the controller 120, so that the controller 120 enters an operating state; the magnetic resonance signals received by the coil assembly can be transmitted to a computer device, and the computer device can perform corresponding imaging processing on the part to be scanned based on the received magnetic resonance signals so as to obtain a magnetic resonance scanning image of the part to be scanned.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 6. The computer device includes a processor, a memory, a network interface, a display screen, and an input device connected by a system bus. Wherein the processor of the computer device is configured to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface of the computer device is used for communicating with an external terminal through a network connection. The display screen of the computer equipment can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer equipment can be a touch layer covered on the display screen, can also be keys, a track ball or a touch pad arranged on the shell of the computer equipment, and can also be an external keyboard, a touch pad or a mouse and the like.
It will be appreciated by those skilled in the art that the structure shown in fig. 6 is merely a block diagram of some of the structures associated with the present application and is not limiting of the computer device to which the present application may be applied, and that a particular computer device may include more or fewer components than shown, or may combine certain components, or have a different arrangement of components.
Those skilled in the art will appreciate that implementing all or part of the above described methods may be accomplished by way of a computer program stored on a non-transitory computer readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. Any reference to memory, storage, database, or other medium used in embodiments provided herein may include at least one of non-volatile and volatile memory. The nonvolatile Memory may include Read-Only Memory (ROM), magnetic tape, floppy disk, flash Memory, optical Memory, or the like. Volatile memory can include random access memory (Random Access Memory, RAM) or external cache memory. By way of illustration, and not limitation, RAM can be in the form of a variety of forms, such as static random access memory (Static Random Access Memory, SRAM) or dynamic random access memory (Dynamic Random Access Memory, DRAM), and the like.
In the description of the present specification, reference to the terms "some embodiments," "other embodiments," "ideal embodiments," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (10)
1. A scanning mattress, the scanning mattress comprising:
an air cushion bed body comprising at least one air cushion, the target surface of the air cushion being for contacting and surrounding a part to be scanned; each air cushion is provided with an air bag and an air valve, and the air valves are used for adjusting the air flow of the air bags;
the controller is respectively connected with each air valve to respectively adjust the opening degree of each air valve;
a coil assembly including a plurality of coil units; the coil unit is arranged on the target surface of the air cushion so as to receive magnetic resonance signals aiming at the part to be scanned.
2. The scanning mattress of claim 1, wherein the coil unit is a radio frequency coil unit; each radio frequency coil unit is distributed in an array.
3. The scanning mattress of claim 1, wherein the coil assembly is printed or adhered to the target surface of the cushion, the coil assembly being bendable to accommodate deformation of the target surface of the cushion.
4. The scanning mattress of claim 1, wherein the target surface of the cushion is made of a flexible substrate.
5. The scanning mattress of claim 1, wherein the scanning mattress further comprises:
the control end of the air source device is connected with the controller, and the air supply end of the air source device is connected with each air valve one by one through an independent air duct.
6. The scanning mattress of claim 5, wherein the air supply means is an air pump.
7. The scanning mattress of claim 5, wherein each of said cushions is independent of each other and is arranged in sequence along the length of said cushion body; the air cushion comprises a plurality of air bags which are mutually communicated.
8. The scanning mattress of claim 7, wherein the air cushion bed comprises:
the magnetic resonance system comprises a first air cushion arranged in a head and neck scanning area, wherein magnetic resonance signals of the head and neck scanning area are received through coil units arranged on the first air cushion;
the second air cushion is arranged in the trunk and upper limb scanning area, and magnetic resonance signals of the trunk and upper limb scanning area are received through the coil units arranged on the second air cushion;
the third air cushion is arranged in the leg scanning area, and magnetic resonance signals of the leg scanning area are received through the coil units arranged on the third air cushion;
and the magnetic resonance signals of the foot scanning area are received by the coil units arranged on the fourth air cushion.
9. A scanning bed, characterized in that it comprises a scanning mattress according to any one of claims 1 to 8; the scanning bed further comprises a bed plate, wherein the bed plate is used for supporting the scanning mattress.
10. A magnetic resonance scanning system, characterized in that the magnetic resonance scanning system comprises a scanning mattress as claimed in any one of claims 1 to 8; the magnetic resonance scanning system further comprises a computer device connected between the controller and the coil assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320942122.7U CN220530009U (en) | 2023-04-17 | 2023-04-17 | Scanning mattress, scanning bed and magnetic resonance scanning system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320942122.7U CN220530009U (en) | 2023-04-17 | 2023-04-17 | Scanning mattress, scanning bed and magnetic resonance scanning system |
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| CN220530009U true CN220530009U (en) | 2024-02-27 |
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| CN202320942122.7U Active CN220530009U (en) | 2023-04-17 | 2023-04-17 | Scanning mattress, scanning bed and magnetic resonance scanning system |
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| CN (1) | CN220530009U (en) |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |