CN210903013U - Special radio frequency array coil device is intervene to horizontal field magnetic resonance - Google Patents
Special radio frequency array coil device is intervene to horizontal field magnetic resonance Download PDFInfo
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- CN210903013U CN210903013U CN201920972400.7U CN201920972400U CN210903013U CN 210903013 U CN210903013 U CN 210903013U CN 201920972400 U CN201920972400 U CN 201920972400U CN 210903013 U CN210903013 U CN 210903013U
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Abstract
The application discloses special radio frequency array coil device is intervene to horizontal field magnetic resonance includes: 3-6 annular coil units which are sequentially arranged from left to right, and a strip-shaped coil supporting body which is used for accommodating each coil unit, is fixedly connected with each coil unit and covers the body surface of a human body when in use; the coil supporting body is composed of a bendable flexible packaging body and a non-bendable rigid packaging body, and at least two intervening windows are arranged on the coil supporting body. The device can meet the requirement of an operation and has good imaging quality and operation navigation.
Description
Technical Field
The application relates to a special radio frequency array coil device for horizontal field magnetic resonance intervention.
Background
The magnetic resonance system is a high-end medical imaging device, which is classified into a horizontal field magnetic resonance system and a vertical field magnetic resonance system according to the direction of the magnetic field of the main magnet. Horizontal field systems refer to the direction of the magnetic field of a magnet parallel to the torso of a person, pointing from the brain towards the soles of the feet or vice versa. By vertical field system is meant that the magnetic field direction of the magnet is perpendicular to the torso direction of the person, e.g. pointing from the front to the back of the person. The magnetic field direction is the most important reference for designing rf coils because the antenna elements in the coil need to be as perpendicular as possible to the magnet direction to achieve the best rf excitation or reception function. Clarity (i.e., sensitivity, or more colloquially, signal-to-noise ratio) and uniformity are two of the most important metrics in terms of performance of radio frequency coils.
Interventional radiology, also called interventional therapeutics, is an emerging discipline combining image diagnosis and clinical treatment, which has been rapidly developed in recent years. Under the guidance and monitoring of digital subtraction angiography machine, CT, ultrasonic and magnetic resonance imaging equipment, puncture needle, catheter and other interventional devices are used to introduce specific instrument into the pathological change part of human body via natural pore canal or small wound for minimally invasive treatment. It is the clinical three-column discipline which is parallel to the traditional internal medicine and surgery. The abdominal interventional radiology is a universal interventional radiology diagnosis and treatment technology mainly aiming at various abdominal system, organ and viscera diseases, including various malignant and benign tumors, hemorrhagic diseases, wounds, abdominal large vessel diseases and the like.
Magnetic resonance navigator intervention (Interventional MR) is a completely new concept and is now in an early stage of development. Magnetic resonance interventions require special techniques and open radio frequency coils. The operation method of magnetic resonance intervention is similar to the intervention operation method under the guidance of a corresponding X-ray machine or CT machine. And because of the advantage of magnetic resonance imaging, the intervention operation process is more accurate and reliable, and even the work which can not be performed under the guidance of an X-ray machine, ultrasound and a CT machine can be performed.
The current clinical examination of magnetic resonance is mainly completed by using local coils corresponding to each part, but the current clinical examination of magnetic resonance is not suitable for the interventional operation of the corresponding part because the conventional coil design does not have a structure with continuous windowing in the middle, or because of the design, the size of the windowing is too small to meet the requirement of the operation.
When designing a horizontal field interventional special coil, special designs need to be made on the coil for the smooth implementation of interventional operations, such as surgical windowing for interventional operations and flexible packaging closer to the body surface. The better the covering surface is needed for the surgical windowing, so that the surgery can be carried out at any place; it is also desirable that a larger single fenestration be better, and that a larger fenestration provide ease of operation.
SUMMERY OF THE UTILITY MODEL
The purpose of the application is: aiming at the defects of the prior art, the application provides the special radio frequency array coil device for the horizontal field magnetic resonance intervention, and the device can meet the operation requirement and has good imaging quality and operation navigation.
The technical scheme of the application is as follows:
a horizontal field magnetic resonance interventional dedicated radio frequency array coil apparatus, comprising:
3-6 ring-shaped coil units arranged in order from left to right, and
the strip-shaped coil supporting body is used for accommodating each coil unit, is fixedly connected with each coil unit and covers the body surface of a human body when in use;
the coil supporting body is composed of a bendable flexible packaging body and a non-bendable rigid packaging body, and at least two intervening windows are arranged on the coil supporting body.
On the basis of the technical scheme, the application also comprises the following preferable scheme:
the coil unit comprises a flexible antenna circuit board and a rigid circuit board, the flexible antenna circuit board is contained in the flexible packaging body, and the rigid circuit board is contained in the rigid packaging body.
And a low-noise preamplifier is integrated on the rigid circuit board.
The quantity of the intervention windows is the same as that of the coil units, and the coil units are respectively arranged around the periphery of the intervention windows in a one-to-one correspondence manner.
The coil support includes:
a flexible endless belt of closed loop construction, and
at least two rigid covers which are in strip structures and are arranged at intervals;
and two ends of each rigid sealing cover are fixedly connected with the flexible annular belt, so that an inner hole of the flexible annular belt is divided into 3-6 intervention windows.
Any two adjacent coil units are partially overlapped.
The rigid cover is arranged at the overlapping position of two adjacent coil units.
The flexible ring belt is a rectangular ring structure.
At least one of the rigid covers has a cable leading out therefrom for connection to a magnetic resonance system.
The application has the following beneficial effects:
when the applicant designs the device, the size of a single window is small when the number of the coil units is higher than 6, and the surgical requirements cannot be met; if the number of the units is less than 3, the performance deviation of the coil is poor, and the navigation performance of the interventional operation is not good enough, so that the design of 3-6 coil units is provided, and the requirements on the size of the window and the high imaging quality of the coil are met simultaneously. The coil supporting body for protecting and supporting each coil unit is composed of a bendable flexible packaging body and a non-bendable rigid packaging body, and the flexible antenna circuit board and the rigid circuit board of each coil unit are packaged and contained in the flexible packaging body and the rigid packaging body respectively, so that the coil device can be freely bent without damaging the internal structure when in use.
Drawings
The present application will be further described with reference to the following drawings and specific embodiments:
fig. 1 is a schematic structural diagram of a horizontal-field mr interventional rf array coil apparatus according to an embodiment of the present application;
fig. 2 is a schematic structural diagram of a horizontal-field mr interventional rf array coil apparatus according to a second embodiment of the present application;
fig. 3 is a schematic structural diagram of a horizontal-field mr interventional dedicated rf array coil apparatus according to a third embodiment of the present application;
wherein: 1-coil unit, 2-coil support, 201-flexible annulus, 202-rigid cover, 3-access fenestration, 4-cable.
Detailed Description
The first embodiment is as follows:
fig. 1 shows a specific embodiment of the horizontal-field mr interventional special rf array coil device according to the present invention, which includes 3 coil units 1 and a substantially strip-shaped coil support 2, wherein the 3 coil units are all in a ring structure, and the 3 coil units 1 are arranged in sequence from left to right, and each coil unit 1 is accommodated inside the coil support 2 and fixedly connected to the coil support 2. The coil support body 2 is provided with 3 interventional fenestrations 3 for performing an operation.
The 3 coil units 1 are respectively arranged around the 3 intervention windows 3 in a one-to-one correspondence manner, namely one coil unit 1 is uniformly arranged on the periphery of each intervention window 3.
The coil support 2 is mainly formed by a flexible ring band 201 and two strip-shaped rigid covers 202. Wherein: the flexible annular band 201 is a closed ring structure with a substantially rectangular outer contour, is made of flexible material, and can be bent at will. The rigid covers 202 are strip-shaped structures, two ends of each rigid cover 202 are fixedly connected with the girdle arms at different positions of the flexible girdle 201, and the two rigid covers 202 are mutually separated and arranged approximately in parallel, so that the inner hole of the flexible girdle 201 is separated into 3 intervening windows 3.
The same as the coil unit in the conventional coil device, the coil unit 1 in this embodiment also includes a bendable flexible antenna circuit board and a rigid circuit board that cannot be bent, wherein the flexible antenna circuit board is accommodated in the bendable flexible ring belt 201, and the rigid circuit board is accommodated in the rigid cover 202, so that the rigid cover 202 is used to protect the rigid circuit board, thereby preventing the rigid circuit board from being damaged due to stress during use.
The rigid circuit board is integrated with a low-noise preamplifier.
Any two adjacent coil units 1 in the above 3 coil units are arranged in a partially overlapped manner (overlap), so that a better decoupling effect can be achieved.
Each of the rigid covers 202 is disposed at the overlapping position of two corresponding adjacent coil units 1, that is, the overlapping position of any two adjacent coil units 1 is located in the rigid cover 202.
One of the rigid covers 202 has a cable 4 leading out for connection to the magnetic resonance system. In practical applications, the rf array coil device is connected to the mr system through the cable 4, and simultaneously the rf array coil device is covered on the body surface of the patient in tandem with another rf array coil device (the structure of which may be the same as or different from that of the present device) (generally, the rf array coil device in the present embodiment is disposed on the front side), and then the subject is subjected to imaging examination by using the mr system and the two rf array coil devices, and the surgical site is determined by the imaging examination, and then the surgical operation is performed from the interventional fenestration 3 closest to the surgical site.
Example two:
fig. 2 shows a second specific embodiment of the horizontal-field mr interventional dedicated rf array coil apparatus according to the present application, which has a structure substantially the same as that of the horizontal-field mr interventional dedicated rf array coil apparatus according to the first embodiment except that: the present embodiment is configured with 6 coil units (not shown in the figure), 5 rigid covers 202 and 6 intervening fenestrations 3.
Example three:
fig. 2 shows a third specific embodiment of the horizontal-field mr interventional dedicated rf array coil apparatus according to the present application, which has a structure substantially the same as that of the horizontal-field mr interventional dedicated rf array coil apparatus according to the first embodiment except that: in this embodiment, a total of 5 coil units (not shown), 4 rigid covers 202 and 5 intervening fenestrations 3 are provided.
It should be understood that the above-mentioned embodiments are only illustrative of the technical concepts and features of the present application, and the present application is not limited thereto. All equivalent changes and modifications made according to the spirit of the main technical scheme of the application are covered in the protection scope of the application.
Claims (9)
1. A horizontal field magnetic resonance interventional special radio frequency array coil device, comprising:
3-6 ring-shaped coil units (1) arranged in this order from left to right, and
the strip-shaped coil supporting body (2) is used for accommodating each coil unit, is fixedly connected with each coil unit and covers the body surface of a human body when in use;
the coil supporting body (2) is composed of a bendable flexible packaging body and a non-bendable rigid packaging body, and at least two intervening windows (3) are arranged on the coil supporting body (2).
2. The special horizontal-field magnetic resonance intervention radio frequency array coil device as set forth in claim 1, wherein the coil unit (1) comprises a flexible antenna circuit board and a rigid circuit board, the flexible antenna circuit board being housed in the flexible package, the rigid circuit board being housed in the rigid package.
3. The special RF array coil device for horizontal-field magnetic resonance intervention according to claim 2, wherein a low-noise preamplifier is integrated on the rigid circuit board.
4. The special horizontal-field magnetic resonance interventional radio frequency array coil device according to claim 2, wherein the interventional windows (3) are the same in number as the coil units (1), and each coil unit (1) is respectively arranged around the interventional window (3) in a one-to-one correspondence manner.
5. The horizontal-field magnetic resonance interventional dedicated radio frequency array coil device according to claim 4, wherein the coil support body (2) comprises:
a flexible annular band (201) in the form of a closed loop, and
at least two rigid covers (202) in a strip-like configuration and arranged at a distance from each other;
both ends of each rigid cover (202) are fixedly connected with the flexible ring belt (201), so that the inner hole of the flexible ring belt (201) is divided into 3-6 intervention windows (3).
6. The horizontal-field magnetic resonance interventional special radio frequency array coil device according to claim 5, characterized in that any two adjacent coil units (1) are partially overlapped.
7. The horizontal-field magnetic resonance interventional special radio frequency array coil device according to claim 6, wherein the rigid cover (202) is arranged at the overlapping of two adjacent coil units (1).
8. The horizontal-field magnetic resonance interventional special radio frequency array coil device according to claim 5, wherein the flexible ring belt (201) is a rectangular ring structure.
9. The special RF array coil device for horizontal-field magnetic resonance intervention according to claim 5, wherein at least one of the rigid covers (202) has a cable (4) leading out for connecting a magnetic resonance system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920972400.7U CN210903013U (en) | 2019-06-26 | 2019-06-26 | Special radio frequency array coil device is intervene to horizontal field magnetic resonance |
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| CN201920972400.7U CN210903013U (en) | 2019-06-26 | 2019-06-26 | Special radio frequency array coil device is intervene to horizontal field magnetic resonance |
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| CN210903013U true CN210903013U (en) | 2020-07-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110169772A (en) * | 2019-06-26 | 2019-08-27 | 苏州众志医疗科技有限公司 | A kind of horizontal magnetic resonance intervention special-purpose radio-frequency array coil device and its application method |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110169772A (en) * | 2019-06-26 | 2019-08-27 | 苏州众志医疗科技有限公司 | A kind of horizontal magnetic resonance intervention special-purpose radio-frequency array coil device and its application method |
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