CN111110237A - Nuclear magnetic resonance brain function coil device - Google Patents
Nuclear magnetic resonance brain function coil device Download PDFInfo
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- CN111110237A CN111110237A CN202010043196.8A CN202010043196A CN111110237A CN 111110237 A CN111110237 A CN 111110237A CN 202010043196 A CN202010043196 A CN 202010043196A CN 111110237 A CN111110237 A CN 111110237A
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- 230000003925 brain function Effects 0.000 title claims abstract description 12
- 238000005481 NMR spectroscopy Methods 0.000 title claims abstract description 11
- 230000007704 transition Effects 0.000 claims abstract description 41
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 230000001815 facial effect Effects 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000003990 capacitor Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 238000003384 imaging method Methods 0.000 description 10
- 239000004020 conductor Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000002595 magnetic resonance imaging Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 description 2
- 210000003423 ankle Anatomy 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002059 diagnostic imaging Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves
- A61B5/055—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves involving electronic [EMR] or nuclear [NMR] magnetic resonance, e.g. magnetic resonance imaging
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/34—Constructional details, e.g. resonators, specially adapted to MR
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/32—Excitation or detection systems, e.g. using radio frequency signals
- G01R33/36—Electrical details, e.g. matching or coupling of the coil to the receiver
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- Life Sciences & Earth Sciences (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
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- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Engineering & Computer Science (AREA)
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- Heart & Thoracic Surgery (AREA)
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Abstract
The invention discloses a nuclear magnetic resonance brain function coil device, which comprises an upper shell and a lower shell, the upper shell is provided with a face covering area which is raised upwards, an upper shell transition area is arranged below the face covering area, an upper coil combination is arranged in the upper shell, an upper coil combination signal socket and a positioning column are arranged on the upper shell, the signal of the upper coil combination is transmitted out through an upper coil combination signal jack, the lower shell is recessed downwards to form a head supporting area, a lower shell transition area is arranged above the head supporting area, a lower coil combination is arranged in the lower shell, the lower shell is provided with a lower coil combined signal socket matched with the upper coil combined signal socket and a positioning hole matched with the positioning column, the signal of lower coil combination is spread through lower coil combination signal socket, upper portion casing transition district card is on lower part casing transition district.
Description
The technical field is as follows:
the invention relates to the technical field of magnetic resonance imaging, in particular to a nuclear magnetic resonance brain function coil device.
Background art:
magnetic Resonance, also known as Magnetic Resonance Imaging (MRI) and Nuclear Magnetic Resonance Imaging (NMRI), is a significant advance in medical Imaging following CT. Since the 80 s of application, it has developed at an extremely rapid rate. The basic principle is that the human body is placed in a special magnetic field, and when the measured object is placed in the magnetic field, the hydrogen atoms in the human body can be polarized. Radio frequency pulses are used to excite hydrogen nuclei in the human body, causing the hydrogen nuclei to resonate and absorb energy. After the radio frequency pulse is stopped, the hydrogen atomic nucleus sends out radio signals according to specific frequency, releases absorbed energy, is recorded by a receiver outside the body, and is processed by an electronic computer to obtain an image.
The radio frequency coil is an important component of a magnetic resonance imaging system and is used for generating radio frequency pulses to excite a scanned object and generate magnetic resonance signals; then, the radio frequency coil receives the magnetic resonance signal, and 2D or 3D images of the scanned object are obtained through subsequent data processing. In order to better acquire the magnetic resonance signal of the scanned part and improve the signal-to-noise ratio of the image, the local coil is widely applied. Local coils are often designed for a particular scanned area, such as for the ankle, the wrist, the spine, the head, etc.
The existing local coil for the head, namely the head coil, still has the problems of low signal-to-noise ratio and poor comfort for patients.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
The invention content is as follows:
the invention aims to provide a nuclear magnetic resonance brain function coil device, thereby overcoming the defects in the prior art.
In order to achieve the above object, the invention provides a nuclear magnetic resonance brain function coil device, which comprises an upper shell and a lower shell, wherein the upper shell is raised upwards to form a face covering area, an upper shell transition area is arranged below the face covering area, an upper coil combination is arranged in the upper shell, an upper coil combination signal socket and a positioning column are arranged on the upper shell, a signal of the upper coil combination is transmitted out through the upper coil combination signal socket, the lower shell is recessed downwards to form a head supporting area, a lower shell transition area is arranged above the head supporting area, a lower coil combination is arranged in the lower shell, a lower coil combination signal socket matched with the upper coil combination signal socket and a positioning hole matched with the positioning column are arranged on the lower shell, a signal of the lower coil combination is transmitted out through the lower coil combination signal socket, the upper shell transition area is clamped on the lower shell transition area.
The face covering area is provided with an eye through hole.
And a bed board fixing clamp is arranged at the bottom of the lower shell.
The upper coil assembly comprises eight channel coils, the eight channel coils are respectively a channel 17, a channel 18, a channel 19, a channel 20, a channel 21, a channel 22, a channel 23 and a channel 24, the channels 21 and 22 are square and share copper wires and capacitors, the channel 20 is of a fan-shaped structure and is partially overlapped with the channels 21 and 22, the rest of the channels are annular channels and are arranged along the outer edges of the channels 20, 21 and 22, the annular channels and the channels 20 are partially overlapped and are also partially overlapped with each other, the channels 17 and 18 are also partially overlapped with the channels 21, and the channels 23 and 24 are also partially overlapped with the channels 22.
The channel 20 is located in the face-covering area, the channels 21 and 22 are located around the eye through hole of the upper shell, the channels 17, 18, 19, 23 and 24 are partially located in the transition area of the upper shell, and the rest of the channels 17, 18, 19, 23 and 24 are located in the face-covering area.
The lower coil combination comprises sixteen channel coils, wherein the sixteen channel coils are respectively a channel 1, a channel 2, a channel 3, a channel 4, a channel 5, a channel 6, a channel 7, a channel 8, a channel 9, a channel 10, a channel 11, a channel 12, a channel 13, a channel 14, a channel 15 and a channel 16, the sixteen channel coils integrally form a part of a football-like shape, the two adjacent coils are partially overlapped, and mutual coupling inductance is shared between the two spaced coils.
The channels 2, 4, 5, 6, 8, 11, 12, 14, 15 and 16 are located in the head support region, the channels 1, 3, 7, 9, 10 and 13 are partially located in the lower shell transition region, and the rest of the channels 1, 3, 7, 9, 10 and 13 are located in the head support region.
Compared with the prior art, the invention has the following beneficial effects:
(1) when the head coil device is used, after the head of a patient is laid on the head supporting area recessed downwards of the lower shell, the upper shell clamps the upper shell transition area on the lower shell transition area from the upper part of the face of the patient, the whole device is not required to be directly sleeved on the head of the patient, on one hand, the use is convenient, and on the other hand, the comfort level of the patient can be improved;
(2) the adjacent coils of the upper coil combination are partially overlapped, the adjacent coils of the lower coil combination are partially overlapped, and the interval coils share the mutual coupling inductor, so that the mutual inductance can be effectively eliminated, and the imaging speed and the imaging definition can be improved;
(3) the upper coil combined channel 17, the upper coil combined channel 18, the upper coil combined channel 19, the upper coil combined channel 23 and the upper coil combined channel 24 are located in an upper shell transition area, the upper shell transition area 1, the lower shell transition area 7, the upper shell transition area 9, the upper shell transition area 10 and the lower shell transition area 13 are located in a lower shell transition area, a channel coil of the upper shell transition area and a channel coil of the lower shell transition area form partial overlapping to eliminate mutual inductance between the upper coil and the lower coil combination, the upper coil and the lower coil combination are connected without an additional conductive material, the imaging definition can be improved, and the problems of potential safety hazards caused by poor electrical contact due to the fact that the additional conductive material is corroded or corroded can be avoided;
(4) when the device is used, images can be acquired from the head of a patient in parallel in multiple directions through imaging of the head supporting area, the upper shell transition area, the lower shell transition area and the face covering area, and the scanning speed can be effectively increased;
(5) the bottom of the lower shell is provided with a bed board fixing clamp, the lower shell and the bed board are fixed during testing, vibration during working can be reduced, and imaging accuracy and comfort of a patient are improved.
Description of the drawings:
FIG. 1 is a schematic structural diagram of an NMR brain function coil apparatus according to the present invention;
FIG. 2 is a schematic view of the upper housing of an NMR brain function coil apparatus of the present invention;
FIG. 3 is a schematic view of the lower housing of an NMR brain function coil apparatus of the present invention;
FIG. 4 is a schematic diagram of an upper coil assembly of the present invention;
FIG. 5 is a schematic view of the lower coil assembly of the present invention;
FIG. 6 is a schematic diagram of the upper and lower coil assemblies of the present invention in combination;
FIG. 7 is a schematic diagram of a coil assembly with spaced channels sharing an inductor according to the present invention;
the reference signs are: 111-upper shell, 112-lower shell, 113-face footprint, 114-upper shell transition zone, 115-upper coil assembly, 116-upper coil assembly signal jack, 117-positioning post, 118-head support zone, 119-lower shell transition zone, 120-lower coil assembly, 121-lower coil assembly signal jack, 122-positioning hole, 123-eye through hole.
The specific implementation mode is as follows:
the following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.
Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.
As shown in fig. 1-7, a nuclear magnetic resonance brain function coil device, including upper housing 111 and lower housing 112, upper housing 111 has facial coverage area 113 up the arch, be upper housing transition area 114 below facial coverage area 113, be provided with coil assembly 115 in upper housing 111, be provided with coil assembly signal socket 116 and reference column 117 on the upper housing 111, the signal of going up coil assembly 115 passes through coil assembly signal socket 116 and spreads out, lower housing 112 has head support area 118 down the indent, be lower housing transition area 119 above the head support area 118, be provided with coil assembly 120 down in the lower housing 112, be provided with coil assembly signal socket 121 and the locating hole 122 that matches with reference column 117 that match with last coil assembly signal socket 116 on the lower housing 112, the signal of coil assembly 120 spreads out through coil assembly signal socket 121 down, the upper housing transition region 114 is snapped onto the lower housing transition region 119.
The face covering area 113 is provided with an eye through hole 123.
The bottom of the lower casing 112 is provided with a bed board fixing clip 124.
The upper coil assembly 115 comprises eight channel coils, the eight channel coils are respectively a channel 17, a channel 18, a channel 19, a channel 20, a channel 21, a channel 22, a channel 23 and a channel 24, the channels 21 and 22 are square and share copper wires and capacitors, the channel 20 is of a fan-shaped structure and is partially overlapped with the channels 21 and 22, the rest of the channels are annular channels and are arranged along the outer edges of the channels 20, 21 and 22, the annular channels and the channels 20 are partially overlapped and are also partially overlapped with each other, the channels 17 and 18 are also partially overlapped with the channels 21, and the channels 23 and 24 are also partially overlapped with the channels 22.
The channel 20 is located in the face-covering area 113, the channels 21 and 22 are located around the eye through hole 123 of the upper shell, the channels 17, 18, 19, 23 and 24 are partially located in the transition area 114 of the upper shell, and the rest of the channels 17, 18, 19, 23 and 24 are located in the face-covering area 113.
The lower coil assembly 120 includes sixteen channel coils, which are respectively a channel 1, a channel 2, a channel 3, a channel 4, a channel 5, a channel 6, a channel 7, a channel 8, a channel 9, a channel 10, a channel 11, a channel 12, a channel 13, a channel 14, a channel 15 and a channel 16, and the sixteen channel coils integrally form a portion of a football-like shape, wherein two adjacent coils are partially overlapped with each other, and mutual coupling inductance is shared between two spaced coils.
The channels 2, 4, 5, 6, 8, 11, 12, 14, 15 and 16 are located in the head support region 118, the channels 1, 3, 7, 9, 10 and 13 are partially located in the lower shell transition region 119, and the rest of the channels 1, 3, 7, 9, 10 and 13 are located in the head support region 118.
In practice, the bed plate fixing clip and the bed plate are arranged at the bottom of the lower shell 112 for fixing, the patient lies down, the head is positioned in the head supporting area 118 of the lower shell 112, the upper shell 111 is pressed onto the lower shell 112 from the upper part of the patient's face, wherein the upper shell transition area 114 is clipped on the lower shell transition area 119, the positioning post 117 is clipped in the positioning hole 122, the upper coil combination signal socket 116 is connected with the lower coil combination signal socket 121, the patient's eye can be seen to the outside through the eye through hole 123, during scanning and imaging, the channel 20, the channel 21 and the channel 22 in the upper coil combination 115 in the upper shell 111 are positioned on the patient's face, the channel 17, the channel 18, the channel 19, the channel 23 and the channel 24 are partially positioned on the patient's face, the channels are partially positioned on the top and the side, and the channels 2, 4, 5, 6, 8, The channels 11, 12, 14, 15 and 16 are located on the back of the head of the patient, the channels 1, 3, 7, 9, 10 and 13 are partially located on the top and side of the head, and because the coil channels are located at all positions of the head of the patient, parallel acquisition can be performed from three directions, wherein the signal of the upper coil assembly 115 is transmitted to the lower coil assembly signal jack 121 through the upper coil assembly signal jack 116, and the signal of the lower coil assembly 120 is transmitted to the lower coil assembly signal jack 121 and is output after being converged with the signal of the upper coil assembly 115.
The head coil device is composed of an upper part and a lower part, the whole device is not required to be directly sleeved on the head of a patient, on one hand, the use is convenient, on the other hand, the comfort level of the patient can be improved, the bottom of the lower shell is provided with the bed board fixing clamp, the lower shell and the bed board are fixed during testing, the vibration during working can be reduced, and the imaging accuracy and the comfort level of the patient are improved; the adjacent coils of the upper coil combination are partially overlapped, the adjacent coils of the lower coil combination are partially overlapped, the interval coils share mutual coupling inductance, and the channel coil of the upper shell transition area and the channel coil of the lower shell transition area are partially overlapped, so that mutual inductance elimination among the coils at all angles can be realized, and the imaging speed and the imaging definition can be improved; the upper coil assembly and the lower coil assembly are not required to be connected between the upper shell and the lower shell through additional conductive materials, so that the imaging definition can be improved, and the problem of potential safety hazards caused by poor electrical contact due to corrosion or pollution of the additional conductive materials can be solved; the invention has simple structure and convenient use.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (7)
1. A nuclear magnetic resonance brain function coil device is characterized in that: including upper portion casing and lower part casing, the up-ward arch of upper portion casing has facial coverage area, be upper portion casing transition district below the facial coverage area, be provided with the coil combination on the casing of upper portion, be provided with coil combination signal socket and reference column on the casing of upper portion, the signal of going up the coil combination spreads through coil combination signal socket, the casing of lower part has the head support district down the concave yield, be lower part casing transition district above the head support district, be provided with down the coil combination in the casing of lower part, be provided with on the casing of lower part with the supporting lower coil combination signal socket of last coil combination signal socket and with the supporting locating hole of reference column, the signal of coil combination spreads through coil combination signal socket down, upper portion casing transition district card is on lower part casing transition district.
2. The coil apparatus of claim 1, wherein: the face covering area is provided with an eye through hole.
3. The coil apparatus of claim 1, wherein: and a bed board fixing clamp is arranged at the bottom of the lower shell.
4. A magnetic resonance brain function coil apparatus according to claim 2, wherein: the upper coil assembly comprises eight channel coils, the eight channel coils are respectively a channel 17, a channel 18, a channel 19, a channel 20, a channel 21, a channel 22, a channel 23 and a channel 24, the channel 21 and the channel 22 share a copper bar wire and a capacitor, the channel 20 is of a fan-shaped structure and partially overlaps with the channel 21 and the channel 22, the rest are annular channels and are arranged along the outer edges of the channel 20, the channel 21 and the channel 22, the annular channels and the channel 20 are partially overlapped and partially overlapped with each other, the adjacent two channels are also partially overlapped, and the channel 17 and the channel 18 are also partially overlapped with the channel 21, and the channel 23 and the channel 24 are also partially overlapped with the channel 22.
5. The coil apparatus of claim 4, wherein: the channel 20 is located in the face-covering area, the channels 21 and 22 are located around the eye through hole of the upper shell, the channels 17, 18, 19, 23 and 24 are partially located in the transition area of the upper shell, and the rest of the channels 17, 18, 19, 23 and 24 are located in the face-covering area.
6. The coil apparatus of claim 1, wherein: the lower coil combination comprises sixteen channel coils, wherein the sixteen channel coils are respectively a channel 1, a channel 2, a channel 3, a channel 4, a channel 5, a channel 6, a channel 7, a channel 8, a channel 9, a channel 10, a channel 11, a channel 12, a channel 13, a channel 14, a channel 15 and a channel 16, the sixteen channel coils integrally form a part of a football-like shape, the two adjacent coils are partially overlapped, and mutual coupling inductance is shared between the two spaced coils.
7. The coil apparatus of claim 6, wherein: the channels 2, 4, 5, 6, 8, 11, 12, 14, 15 and 16 are located in the head support region, the channels 1, 3, 7, 9, 10 and 13 are partially located in the lower shell transition region, and the rest of the channels 1, 3, 7, 9, 10 and 13 are located in the head support region.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010043196.8A CN111110237A (en) | 2020-01-15 | 2020-01-15 | Nuclear magnetic resonance brain function coil device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010043196.8A CN111110237A (en) | 2020-01-15 | 2020-01-15 | Nuclear magnetic resonance brain function coil device |
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| Publication Number | Publication Date |
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| CN111110237A true CN111110237A (en) | 2020-05-08 |
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| CN202010043196.8A Withdrawn CN111110237A (en) | 2020-01-15 | 2020-01-15 | Nuclear magnetic resonance brain function coil device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113558606A (en) * | 2021-07-28 | 2021-10-29 | 合肥市第一人民医院 | Head fixing device for nuclear magnetic resonance |
| CN116087849A (en) * | 2023-02-28 | 2023-05-09 | 江苏力磁医疗设备有限公司 | Gradient coil special for MRI |
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| KR20110054129A (en) * | 2009-11-17 | 2011-05-25 | 한국기초과학지원연구원 | Rf coil assembly for magnetic resonance image device |
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| CN113558606A (en) * | 2021-07-28 | 2021-10-29 | 合肥市第一人民医院 | Head fixing device for nuclear magnetic resonance |
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| CN116087849A (en) * | 2023-02-28 | 2023-05-09 | 江苏力磁医疗设备有限公司 | Gradient coil special for MRI |
| CN116087849B (en) * | 2023-02-28 | 2023-11-17 | 江苏力磁医疗设备有限公司 | Gradient coil special for MRI |
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