CN203858352U - Sixteen-channel full-spinal column coil - Google Patents
Sixteen-channel full-spinal column coil Download PDFInfo
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- CN203858352U CN203858352U CN201420111183.XU CN201420111183U CN203858352U CN 203858352 U CN203858352 U CN 203858352U CN 201420111183 U CN201420111183 U CN 201420111183U CN 203858352 U CN203858352 U CN 203858352U
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- 238000003384 imaging method Methods 0.000 abstract description 7
- 210000000115 thoracic cavity Anatomy 0.000 abstract description 3
- 210000004705 lumbosacral region Anatomy 0.000 abstract 2
- 210000000038 chest Anatomy 0.000 description 5
- 230000008901 benefit Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000002595 magnetic resonance imaging Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000005481 NMR spectroscopy Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000013421 nuclear magnetic resonance imaging Methods 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
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- Magnetic Resonance Imaging Apparatus (AREA)
Abstract
The utility model discloses a sixteen-channel full-spinal column coil. The sixteen-channel full-spinal column coil comprises a cervical spine coil and a thoracic and lumbar spine coil arranged at the back of the cervical spine coil, wherein the cervical spine coil comprises four coil units of two upper coil units distributed in a left and right intersection mode and two lower coil units distributed in a left and right intersection mode, the upper coil units and the lower coil units are distributed in an upper and lower intersection mode, the thoracic and lumbar spine coil comprises twelve coil units of four left coil units distributed in a front and back intersection mode, four middle coil units distributed in a front and back intersection mode and four right coil units distributed in a front and back intersection mode, and the left coil units, the middle coil units and the right coil units are sequentially distributed from left to right in an intersection mode. The sixteen-channel full-spinal column coil can realize full-spinal integrated imaging, and all images have properties of good uniformity and high signal-to-noise ratio.
Description
Technical field
The utility model relates to Magnetic resonance imaging field, is specifically related to a kind of full spine coil with 16 receiving cables.
Background technology
Nuclear magnetic resonance imaging system is to generate the two dimension of sample or the equipment of 3-D view according to Magnetic resonance imaging principle, in an increasingly wide range of applications in medical diagnosis field.
In nmr imaging technique, with receiving coil, collect the radiofrequency signal that sample is excited to send, after the radiofrequency signal of collecting is exaggerated, for sample image, rebuild.The electrical structure of receiving coil mainly comprises the coil case of being made by conductive material, and is connected to inductance and electric capacity in coil case.In working order, receiving coil is around patient's checked position, its output impedance is mated with Back end data collecting device, and in frequency of operation coil inside, having uniform electromagnetic field distributes, the resonance signal of drawing has good signal to noise ratio (S/N ratio), thereby obtains clear distortionless sample image.When receiving coil is in idle time, in off resonance state, can not disturb the work of miscellaneous equipment in transmitting coil and system.
In prior art, the structure of hyperchannel nuclear magnetic resonance receiving coil often comprises a plurality of closed unit loop that are enclosed in imaging region periphery, increase the quantity of unit loop, likely within the shorter time, obtain in theory the electromagnetic signal of more strengthening, but need more complicated debugging could obtain good signal to noise ratio (S/N ratio), and sample image clearly.This is that intercoupling between unit loop is more complicated because passage has increased, and between adjacent unit loop, can eliminate coupling by juxtaposition or direct tandem electric inductance electric capacity, and the coupling between coil unit ring relatively far apart is difficult to eliminate.If can not eliminate coupling between unit ring, multi-channel coil is with regard to cisco unity malfunction.
The radio-frequency coil that is applied at present centrum magnetic resonance imaging mainly contains two kinds, and a kind of is 4 relatively short receiving cable centrum coils, as shown in Figure 1; Another is also full spine coil, only has 10 receiving cables, as shown in Figure 2.
Centrum coil shown in Fig. 1 has four receiving cables (also claiming coil unit), belongs to non-full spine coil, in full backbone imaging, need to repeatedly put position, and full spine image needs multiple images to splice, and picture quality is not ideal enough.
Centrum coil shown in Fig. 2 has 10 receiving cables (also claiming coil unit), belongs to full vertebra coil.This coil neck only has upper and lower 2 Loop passages, and thoracic vertebrae and lumbar portion form by 4 sections, and every section has 2 passages, is respectively Loop unit and Saddle unit.Because port number is less, picture quality is still not ideal enough.
For suspecting clinically, be the patient of the multiple pathology of backbone, if use traditional centrum coil, each section need to be scanned respectively, radio-frequency coil will be changed in centre, again puts position, and required time is longer.
Summary of the invention
The utility model object is: for the problems referred to above, inventor is through studying intensively, and exploitation is except a kind of good uniformity, the full spine coil of 16 passage that signal to noise ratio (S/N ratio) is high, and it can realize the imaging of full vertebra one.
The technical solution of the utility model is: the described full spine coil of 16 passage, by spine coils and the chest lumbar vertebrae coil that is positioned at this spine coils rear, formed,
Described spine coils by two lower coil unit of two of left and right cross-distribution upper coil units and left and right cross-distribution totally 4 coil units jointly form, and described upper coil unit and the distribution of described lower coil unit top-bottom cross;
Described chest lumbar vertebrae coil by four coil unit of four left coil unit of front and back cross-distribution, front and back cross-distribution and four right coil units of front and back cross-distribution totally 12 coil units jointly form, and described left coil unit, coil unit and right coil unit cross-distribution successively from left to right.
Be positioned at left coil unit, coil unit and the right coil unit of forefront and two described lower coil unit cross-distribution.
Two described upper coil unit shape sizes are identical, and are symmetrically arranged.
Two described lower coil cell configuration sizes are identical, and are symmetrically arranged.
Four described left coil cell configuration sizes are identical.
Four described coil cell configuration sizes are identical.
Four described right coil unit shape sizes are identical.
Described on each shape size of coil unit, lower coil unit, left coil unit, coil unit and right coil unit identical.
The utility model has the advantages that:
1, this loop construction that this patent proposes meets the requirement of full vertebra imaging completely, has good imaging effect, and patient and doctor's experience also as snug as a bug in a rug.
2, this patent proposes this loop construction because done very large improvement on the arranging of coil unit, and experimental result shows, compares the full vertebra coil of the tradition shown in Fig. 2, has obtained obvious improvement in performance, and when image penetration power of desirable noise can be provided.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the structural representation of traditional four-way coil;
Fig. 2 is the structural representation of traditional ten passage coils;
Fig. 3 is the structural representation of the full spine coil of this 16 passage of the utility model;
Wherein: 1-spine coils, the upper coil unit of 101-, 102-lower coil unit;
2-chest lumbar vertebrae coil, 201-left coil unit, 202-coil unit, the right coil unit of 203-.
Embodiment
Fig. 3 has shown a specific embodiment of the full spine coil of this 16 passage of the utility model, and it is similar to this traditional centrum coil shown in Fig. 2, and it also consists of spine coils 1 and the chest lumbar vertebrae coil 2 that is positioned at this spine coils 1 rear.
Different from this traditional centrum coil of Fig. 2, the key improvements of the present embodiment is:
Described spine coils 1 by two lower coil unit 102 of two of left and right cross-distribution upper coil units 101 and left and right cross-distribution totally 4 coil units jointly form, and described upper coil unit 101 distributes (in Fig. 1 with described lower coil unit 102 top-bottom cross, for view convenience, deliberately upper coil unit and lower coil unit are separated to drafting, in fact the two is that top-bottom cross distributes, and partially overlaps).Here said " left and right cross-distribution " refers to the two coil unit right layout of one the first from left and partially overlap (Overlap), said " top-bottom cross distribution " refers to that two coil units arrange one on the other and partially overlap (Overlap), and coil unit 101 and two lower coil unit 102 form the loop configuration that its middle part can hold neck on visible two.
Described chest lumbar vertebrae coil 2 by four coil unit 202 of four left coil unit 201 of front and back cross-distribution, front and back cross-distribution and four right coil units 203 of front and back cross-distribution totally 12 coil units jointly form, and described left coil unit 201, coil unit 202 and right coil unit 203 cross-distribution successively from left to right.So-called " from left to right successively cross-distribution " refers to: left coil unit 201, coil unit 202 and right coil unit 203 distribute from left to right successively, and left coil unit and coil cell mesh overlap (Overlap), coil unit and right coil unit partially overlap (Overlap).
And the left coil unit 201 of forefront, coil unit 202 and right coil unit 203 and described two lower coil unit 102 also arranged crosswise, as Fig. 3.
Visible, spine coils is comprised of 4 coil units, and these 4 coil units are divided into upper and lower two parts, and every part comprises 2 coil units.Chest lumbar vertebrae coil forms by 4 sections, and every section is comprised of 3 coil units.
Said in the present embodiment " upper and lower, front, rear, left and right " have following implication: in Fig. 3, above-below direction is equivalent to the Z-direction in rectangular coordinate system in space, left and right directions is equivalent to the Y direction in rectangular coordinate system in space, and fore-and-aft direction is equivalent to the X-direction in rectangular coordinate system in space.
Signal to noise ratio (S/N ratio) for further coil, in this example, the shape size of coil unit, lower coil unit, left coil unit, coil unit and right coil unit is identical on each, and coil unit is symmetrically arranged on two, two lower coil unit 10 are symmetrically arranged.
Inventor has also carried out signal to noise ratio (S/N ratio) test to the conventional coil shown in the utility model full spine coil of this 16 passage and Fig. 1 and Fig. 2, and the concrete numerical value of test is as shown in the table:
| Snr value | Area1 | Area2 | Area3 | Area4 |
?
| Fig. 1 coil | 2266.4 | 2627.1 | 1179.4 | 1337.6 |
| Fig. 2 coil | 2288.5 | 2528.5 | 1161.5 | 1303.6 |
| Fig. 3 coil | 2979.0 | 3362.7 | 1449.3 | 1686.8 |
As can be seen from the above table, each region signal to noise ratio (S/N ratio) of same position relatively in, coil of the present invention has very significantly signal to noise ratio (S/N ratio) and homogeneity advantage.The full spine coil of tradition shown in relative Fig. 2, the full spine coil of this 16 passage of this patent has fairly obvious signal to noise ratio (S/N ratio) advantage.
Certainly, above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow people can understand content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalent transformations of doing according to the Spirit Essence of the utility model main technical schemes or modification, within all should being encompassed in protection domain of the present utility model.
Claims (8)
1. the full spine coil of 16 passage, consists of spine coils (1) and the chest lumbar vertebrae coil (2) that is positioned at this spine coils (1) rear, it is characterized in that:
Described spine coils (1) by two lower coil unit (102) of two of left and right cross-distribution upper coil units (101) and left and right cross-distribution totally 4 coil units jointly form, and described upper coil unit (101) and the distribution of described lower coil unit (102) top-bottom cross;
Described chest lumbar vertebrae coil (2) by four right coil units (203) of four left coil unit (201) of front and back cross-distribution, four coil unit (202) of front and back cross-distribution and front and back cross-distribution totally 12 coil units jointly form, and described left coil unit (201), coil unit (202) and right coil unit (203) cross-distribution successively from left to right.
2. the full spine coil of 16 passage according to claim 1, is characterized in that: be positioned at left coil unit (201), coil unit (202) and the right coil unit (203) of forefront and described two lower coil unit (102) cross-distribution.
3. the full spine coil of 16 passage according to claim 1, is characterized in that: two described upper coil unit (101) shape sizes are identical, and are symmetrically arranged.
4. the full spine coil of 16 passage according to claim 1, is characterized in that: described two lower coil unit (102) shape size is identical, and is symmetrically arranged.
5. the full spine coil of 16 passage according to claim 1, is characterized in that: described four left coil unit (201) shape size is identical.
6. the full spine coil of 16 passage according to claim 1, is characterized in that: described four coil unit (202) shape size is identical.
7. the full spine coil of 16 passage according to claim 1, is characterized in that: described four right coil units (203) shape size is identical.
8. the full spine coil of 16 passage according to claim 1, is characterized in that: described coil unit (101) on each, lower coil unit (102), left coil unit (201), coil unit (202) are identical with the shape size of right coil unit (203).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111183.XU CN203858352U (en) | 2014-03-12 | 2014-03-12 | Sixteen-channel full-spinal column coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420111183.XU CN203858352U (en) | 2014-03-12 | 2014-03-12 | Sixteen-channel full-spinal column coil |
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| Publication Number | Publication Date |
|---|---|
| CN203858352U true CN203858352U (en) | 2014-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420111183.XU Expired - Lifetime CN203858352U (en) | 2014-03-12 | 2014-03-12 | Sixteen-channel full-spinal column coil |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226829A (en) * | 2018-01-02 | 2018-06-29 | 北京清影华康科技有限公司 | Neck chest joint imaging coil block |
-
2014
- 2014-03-12 CN CN201420111183.XU patent/CN203858352U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108226829A (en) * | 2018-01-02 | 2018-06-29 | 北京清影华康科技有限公司 | Neck chest joint imaging coil block |
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| C14 | Grant of patent or utility model | ||
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| CX01 | Expiry of patent term |
Granted publication date: 20141001 |
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| CX01 | Expiry of patent term |