CN205301555U - A shoulder formula RF coil device for magnetic resonance imaging system - Google Patents
A shoulder formula RF coil device for magnetic resonance imaging system Download PDFInfo
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- CN205301555U CN205301555U CN201620032364.2U CN201620032364U CN205301555U CN 205301555 U CN205301555 U CN 205301555U CN 201620032364 U CN201620032364 U CN 201620032364U CN 205301555 U CN205301555 U CN 205301555U
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Abstract
The utility model provides a shoulder formula RF coil device for magnetic resonance imaging system, including inner shell and coiler part, the coiler part is fixed on the inner shell, the inner shell covers the arm part at human arm including the cover at the shoulder subtotal of human shoulder, the coiler part includes and is first coil, second coil, tertiary winding, four coil, the 5th coil, the 6th coil, the 7th coil and the 8th coil respectively by eight solenoidal inductor, wherein, first coil, second coil, tertiary winding, four coil set up respectively the shoulder part of inner shell for from the beginning, the signal of human shoulder is gathered to the direction of foot, the 5th coil, the 6th coil, the 7th coil, the 8th coil set up respectively the arm part of inner shell for follow the arm position and gather the signal of human shoulder inwards. The beneficial effects of the utility model are that: have better homogeneity and higher conversion efficiency, the image quality preferred.
Description
Technical field
This utility model relates to nuclear magnetic resonance imaging system (MRI), particularly relates to a kind of shoulder coil device for nuclear magnetic resonance imaging system.
Background technology
In modern medical service technology, nuclear magnetic resonance imaging system is that one is widely used and the obvious common medical equipment of effect, and, about the research and development of nuclear magnetic resonance imaging system also in constantly carrying out. In nuclear magnetic resonance imaging system, there is a coil device, rf power amplifiers drive, on the region big as far as possible at, produce the radio-frequency (RF) magnetic field of equally distributed some strength.
Because the performance of coil device is very big to the performance impact of nuclear magnetic resonance imaging system, so the quality of coil device performance is particularly significant, and the quality of its performance essentially consists in two indices:
L, homogeneity range, namely reach the size in the region of radio-frequency (RF) magnetic field Even distribution entails, and this region is the bigger the better;
2, conversion efficiency, the efficiency of radio-frequency (RF) magnetic field magnetic energy is converted to by the transmitting power of radio frequency sending set, owing to radio frequency sending set price comparison is expensive, and the more big radio frequency sending set of power is more expensive, if there is higher conversion efficiency avoid the need for too powerful radio frequency sending set, it is possible to reduce cost.
For coil device itself, the main factor affecting its performance is the version of coil device, and version commonly used at present has:
L, saddle coil, its general shape is similar to a saddle, therefore named saddle coil. Its advantage is in that the magnetic field homogeneity that coil produces is relatively good, and conversion efficiency is also higher. But, saddle coil is extremely sensitive to radio frequency environment, and needs magnet symmetrical, and otherwise its uniformity and conversion efficiency all can variation sharply. Magnetic resonance imaging system thus can only be made the cylindrical shape comparatively closed or similar shape, and the patient suffering from melancholia, claustrophobia or some other similar conditions is unaccommodated by such shape, can produce serious mental pressure to them.
2, butterfly shaped coils, the advantage of this coil is to make the structure of split blade type, and the requirement of magnet shape is not high yet, but the uniformity of butterfly shaped coils is very bad, and efficiency is also relatively low.
3, solenoid coil, this coil is more suitable for the field system that steady magnetic field is vertical direction, but solenoid coil is easily subject to the impact of surrounding metal object, especially when metal object is near solenoid coil, when exciting object to be seen, efficiency substantially reduces, and when detecting the magnetic resonance signal produced in object to be seen, conversion efficiency is decreased obviously.
From above introduction it is recognised that the shape of the different discharging modes of radio-frequency coil coil and coil is very big on the impact of radio frequency coil performance, how to discharge difform coil in radio-frequency coil and often determine the performance quality of radio-frequency coil.
Summary of the invention
In order to solve the problems of the prior art, this utility model provides a kind of shoulder coil device for nuclear magnetic resonance imaging system.
This utility model provides a kind of shoulder coil device for nuclear magnetic resonance imaging system, and including inner shell and coiler part, described coiler part is fixed on described inner shell; Described inner shell includes covering on the shoulder segments of shoulders of human body and covering on the arm segment of human arm; Described coiler part includes eight solenoid coils, respectively first coil, the second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil, the 7th coil and the 8th coil, wherein, described first coil, the second coil, tertiary coil, the 4th coil are separately positioned on the shoulder segments of described inner shell, the signal of shoulders of human body is gathered for direction from head to foot, described 5th coil, the 6th coil, the 7th coil, the 8th coil are separately positioned on the arm segment of described inner shell, for gathering the signal of shoulders of human body inwards from arm position.
As further improvement of the utility model, described first coil, the second coil adjacent part overlapping, for eliminating the coupling between described first coil, the second coil; Described second coil, tertiary coil adjacent part overlapping, for eliminating the coupling between described second coil, tertiary coil; Described tertiary coil, the 4th coil adjacent part overlapping, for eliminating the coupling between described tertiary coil, the 4th coil.
As further improvement of the utility model, described 5th coil, the 6th coil adjacent part overlapping, for eliminating the coupling between described 5th coil, the 6th coil; Described 6th coil, the 7th coil adjacent part overlapping, for eliminating the coupling between described 6th coil, the 7th coil; Described 7th coil, the 8th coil adjacent part overlapping, for eliminating the coupling between described 6th coil, the 7th coil.
As further improvement of the utility model, described first coil, the second coil, tertiary coil, the 4th coil enclose as sector mutually, and described 5th coil, the 6th coil, the 7th coil, the 8th coil enclose mutually as cylinder.
As further improvement of the utility model, described 5th coil is provided with partly overlaps with described first coil, the second coil respectively; Described 6th coil is provided with partly overlaps with described first coil, the second coil, tertiary coil respectively; Described 7th coil is provided with partly overlaps with described second coil, tertiary coil, the 4th coil respectively; Described 8th coil is provided with partly overlaps with described tertiary coil, the 4th coil respectively.
As further improvement of the utility model, described coiler part also includes electronic component, and described electronic component is serially connected in any one in described first coil, the second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil, the 7th coil, the 8th coil.
As further improvement of the utility model, described first coil, the second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil, the 7th coil, the 8th coil are copper strips and are made.
As further improvement of the utility model, described shoulder coil device also includes the shell for covering described coiler part, and described shell is fixing with described inner shell to be connected, and described coiler part is arranged between described shell, inner shell.
The beneficial effects of the utility model are: by such scheme, the first coil of shoulder segments, the second coil, tertiary coil, the 4th coil can completely cover whole shoulders of human body, it is provided that image quality preferably; 5th coil of arm segment, the 6th coil, the 7th coil, the 8th coil, make the imaging region of coiler part expand further, and final whole coiler part has good uniformity and higher conversion efficiency, and image quality is preferably.
Accompanying drawing explanation
Fig. 1 is the front schematic view of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 2 is the side schematic view of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 3 is the schematic rear view of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 4 is the schematic diagram of the first coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 5 is the schematic diagram of the second coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 6 is the schematic diagram of the tertiary coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 7 is the schematic diagram of the 4th coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 8 is the schematic diagram of the 5th coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Fig. 9 is the schematic diagram of the 6th coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Figure 10 is the schematic diagram of the 7th coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Figure 11 is the schematic diagram of the 8th coil of a kind of shoulder coil device for nuclear magnetic resonance imaging system of this utility model.
Detailed description of the invention
Illustrate below in conjunction with accompanying drawing and this utility model is further illustrated by detailed description of the invention.
Drawing reference numeral in Fig. 1 to Figure 11 is: inner shell 10; First coil 21; Second coil 22; Tertiary coil 23; 4th coil 24; 5th coil 25; 6th coil, 26; 7th coil 27; 8th coil 28.
As shown in Figure 1 to 11, a kind of shoulder coil device for nuclear magnetic resonance imaging system, including inner shell 10 and coiler part, described coiler part is fixed on described inner shell 10; Described inner shell 10 includes covering on the shoulder segments of shoulders of human body and covering on the arm segment of human arm; Described coiler part includes eight solenoid coils, respectively first coil the 21, second coil 22, tertiary coil the 23, the 4th coil the 24, the 5th coil the 25, the 6th coil the 26, the 7th coil 27 and the 8th coil 28, wherein, described first coil the 21, second coil 22, tertiary coil the 23, the 4th coil 24 are separately positioned on the shoulder segments of described inner shell 10, form one group of shoulder coil, gather the signal of shoulders of human body for direction from head to foot; Described 5th coil the 25, the 6th coil the 26, the 7th coil the 27, the 8th coil 28 is separately positioned on the arm segment of described inner shell 10, forms one group of arm coil, for gathering the signal of shoulders of human body inwards from arm position;All overlap between the solenoid coil that each two is adjacent.
As shown in Figure 1 to 11, described inner shell 10 is open by design, and described inner shell 10 is designed as the shape of shoulder, matches (conformal) with the scanning position of shoulders of human body, the portion of its shoulder segments correspondence people, the arm position of arm segment correspondence human body.
As shown in Figure 1 to 11, the adjacent part of described first coil the 21, second coil 22 is overlapping, forms saddle coil, for eliminating the coupling between two coils; Described second coil 22, tertiary coil 23 adjacent part overlapping, form saddle coil, for eliminating the coupling between two coils; The adjacent part of described tertiary coil the 23, the 4th coil 24 is overlapping, forms saddle coil, for eliminating the coupling between two coils; Overlapping effect is to remove mutual coupling (namely the total magnetic flux in overlapping region is zero).
As shown in Figure 1 to 11, the adjacent part of described 5th coil the 25, the 6th coil 26 is overlapping, forms saddle coil, for eliminating the coupling between two coils; The adjacent part of described 6th coil the 26, the 7th coil 27 is overlapping, forms saddle coil, for eliminating the coupling between two coils; The adjacent part of described 7th coil the 27, the 8th coil 28 is overlapping, forms saddle coil, for eliminating the coupling between two coils; Overlapping effect is to remove mutual coupling (namely the total magnetic flux in overlapping region is zero).
As shown in Figure 1 to 11, described first coil the 21, second coil 22, tertiary coil the 23, the 4th coil 24 phase enclose as sector, described first coil the 21, second coil 22, tertiary coil the 23, the 4th coil 24 in fan-shaped uniformly around the shoulder segments at inner shell 10; Described 5th coil the 25, the 6th coil the 26, the 7th coil the 27, the 8th coil 28 phase encloses as cylinder, and described 5th coil the 25, the 6th coil the 26, the 7th coil the 27, the 8th coil 28 is cylindrical uniformly around the arm segment at inner shell 10.
As shown in Figure 1 to 11, described 5th coil 25 is provided with described first coil the 21, second coil 22 respectively and partly overlaps; Described 6th coil 26 is provided with partly overlaps with described first coil the 21, second coil 22, tertiary coil 23 respectively; Described 7th coil 27 is provided with partly overlaps with described second coil 22, tertiary coil the 23, the 4th coil 24 respectively; Described 8th coil 28 is provided with described tertiary coil the 23, the 4th coil 24 respectively and partly overlaps, and overlapping effect is to remove mutual coupling (namely the total magnetic flux in overlapping region is zero).
As shown in Figure 1 to 11, described coiler part also includes electronic component, described electronic component is serially connected in any one in described first coil the 21, second coil 22, tertiary coil the 23, the 4th coil the 24, the 5th coil the 25, the 6th coil the 26, the 7th coil the 27, the 8th coil 28, and described electronic component can be preferably inductance, electric capacity etc.
As shown in Figure 1 to 11, described first coil the 21, second coil 22, tertiary coil the 23, the 4th coil the 24, the 5th coil the 25, the 6th coil the 26, the 7th coil the 27, the 8th coil 28 are copper strips and are made.
As shown in Figure 1 to 11, described shoulder coil device also includes the shell for covering described coiler part, and described shell is fixing with described inner shell 10 to be connected, and described coiler part is arranged between described shell, inner shell 10.
As shown in Figure 1 to 11, in imaging process, a kind of shoulder coil device for nuclear magnetic resonance imaging system provided by this utility model covers on shoulders of human body as a secondary shoulder protector, people's shoulder joint can be scanned imaging, the open structure of coil is conducive to coil to use patient to put position, it is possible to obtain dig, with medical science solution, the image that position is identical.
As shown in Figure 1 to 11, the exciting and receive and all completed by radio-frequency coil of radio-frequency (RF) magnetic field. For receiving coil, improve conversion efficiency it is critical that. In general, less coil and higher conversion efficiency can be obtained closer to imaging object. In order to cover bigger imaging region, it is necessary to use multiple coil around whole imaging object. A kind of shoulder coil device for nuclear magnetic resonance imaging system that this utility model provides meets above-mentioned requirements, first coil 21, second coil 22 of shoulder segments, tertiary coil the 23, the 4th coil 24 can completely cover whole shoulders of human body, it is provided that image quality preferably; 5th coil the 25, the 6th coil the 26, the 7th coil the 27, the 8th coil 28 of arm segment, makes the imaging region of coiler part expand further, and final whole coiler part has good uniformity and higher conversion efficiency, and image quality is preferably.
Above content is in conjunction with concrete preferred implementation further detailed description of the utility model, it is impossible to assert that of the present utility model being embodied as is confined to these explanations. For this utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, it is also possible to make some simple deduction or replace, protection domain of the present utility model all should be considered as belonging to.
Claims (8)
1. the shoulder coil device for nuclear magnetic resonance imaging system, it is characterised in that: including inner shell and coiler part, described coiler part is fixed on described inner shell; Described inner shell includes covering on the shoulder segments of shoulders of human body and covering on the arm segment of human arm; Described coiler part includes eight solenoid coils, respectively first coil, the second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil, the 7th coil and the 8th coil, wherein, described first coil, the second coil, tertiary coil, the 4th coil are separately positioned on the shoulder segments of described inner shell, the signal of shoulders of human body is gathered for direction from head to foot, described 5th coil, the 6th coil, the 7th coil, the 8th coil are separately positioned on the arm segment of described inner shell, for gathering the signal of shoulders of human body inwards from arm position.
2. the shoulder coil device for nuclear magnetic resonance imaging system according to claim 1, it is characterised in that: described first coil, the second coil adjacent part overlapping, for eliminating the coupling between described first coil, the second coil; Described second coil, tertiary coil adjacent part overlapping, for eliminating the coupling between described second coil, tertiary coil; Described tertiary coil, the 4th coil adjacent part overlapping, for eliminating the coupling between described tertiary coil, the 4th coil.
3. the shoulder coil device for nuclear magnetic resonance imaging system according to claim 2, it is characterised in that: described 5th coil, the 6th coil adjacent part overlapping, for eliminating the coupling between described 5th coil, the 6th coil; Described 6th coil, the 7th coil adjacent part overlapping, for eliminating the coupling between described 6th coil, the 7th coil; Described 7th coil, the 8th coil adjacent part overlapping, for eliminating the coupling between described 6th coil, the 7th coil.
4. the shoulder coil device for nuclear magnetic resonance imaging system according to claim 3, it is characterized in that: described first coil, the second coil, tertiary coil, the 4th coil enclose as sector mutually, and described 5th coil, the 6th coil, the 7th coil, the 8th coil enclose mutually as cylinder.
5. the shoulder coil device for nuclear magnetic resonance imaging system according to claim 4, it is characterised in that: described 5th coil is provided with partly overlaps with described first coil, the second coil respectively;Described 6th coil is provided with partly overlaps with described first coil, the second coil, tertiary coil respectively; Described 7th coil is provided with partly overlaps with described second coil, tertiary coil, the 4th coil respectively; Described 8th coil is provided with partly overlaps with described tertiary coil, the 4th coil respectively.
6. the shoulder coil device for nuclear magnetic resonance imaging system according to claim 1, it is characterized in that: described coiler part also includes electronic component, described electronic component is serially connected in any one in described first coil, the second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil, the 7th coil, the 8th coil.
7. the shoulder coil device for nuclear magnetic resonance imaging system according to claim 1, it is characterised in that: described first coil, the second coil, tertiary coil, the 4th coil, the 5th coil, the 6th coil, the 7th coil, the 8th coil are copper strips and are made.
8. the shoulder coil device for nuclear magnetic resonance imaging system according to claim 1, it is characterized in that: described shoulder coil device also includes the shell for covering described coiler part, described shell is fixing with described inner shell to be connected, and described coiler part is arranged between described shell, inner shell.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032364.2U CN205301555U (en) | 2016-01-13 | 2016-01-13 | A shoulder formula RF coil device for magnetic resonance imaging system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620032364.2U CN205301555U (en) | 2016-01-13 | 2016-01-13 | A shoulder formula RF coil device for magnetic resonance imaging system |
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| CN205301555U true CN205301555U (en) | 2016-06-08 |
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| CN201620032364.2U Withdrawn - After Issue CN205301555U (en) | 2016-01-13 | 2016-01-13 | A shoulder formula RF coil device for magnetic resonance imaging system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527595A (en) * | 2016-01-13 | 2016-04-27 | 深圳市特深电气有限公司 | Shoulder-type radio-frequency coil device for nuclear magnetic resonance imaging system |
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2016
- 2016-01-13 CN CN201620032364.2U patent/CN205301555U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527595A (en) * | 2016-01-13 | 2016-04-27 | 深圳市特深电气有限公司 | Shoulder-type radio-frequency coil device for nuclear magnetic resonance imaging system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160608 Effective date of abandoning: 20181116 |
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| AV01 | Patent right actively abandoned |