CN103536289A - Magnetic resonance scanning method for conducting peripheral nerve imaging - Google Patents
Magnetic resonance scanning method for conducting peripheral nerve imaging Download PDFInfo
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- CN103536289A CN103536289A CN201310536306.4A CN201310536306A CN103536289A CN 103536289 A CN103536289 A CN 103536289A CN 201310536306 A CN201310536306 A CN 201310536306A CN 103536289 A CN103536289 A CN 103536289A
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Abstract
The invention discloses a magnetic resonance scanning method for conducting peripheral nerve imaging. Magnetic resonance scanning parameters are TR:10000ms, time of inversion (TI):220-250ms, TE: 72.7ms, matrix: 96*96, FOV: 12cm, layer thickness: 2.5-3.0 mm, gap: 0mm, NEX: 10-12, and b value 0, 400-500s/mm<2>. By means of the method, scanning is simple, ADC value measuring can be conducted, and nerve states are evaluated from functions. Post-processing can adopt a maximum intensity projection (MIP) technology, operation is simple, and subjectivity caused by manual drawing of a region of interest (ROI) is avoided.
Description
Technical field
The present invention relates to a kind of magnetic resonance scanning method that carries out peripheral nerve imaging.
Background technology
Peripheral nerve research is current scientific research forward position, for neural-integrity, successive Assessment, mainly relies on electromyogram, brings out the electrophysiologic studies such as current potential.Electromyography can coarse evaluation peripheral nerve situation.Yet electromyography has following limitation: 1. have necessarily traumatic.2. electromyogram can not be predicted the whether renewable reparation of nerve.If the short time need to judge nerve growth situation and have defect, because electromyogram assessment need to be waited until regeneration axon, the effector of growing into can be realized.In recent years, along with developing rapidly of MRI software and hardware technology, the MRI around application in neural research has very big breakthrough.Wherein diffusion tensor imaging (diffusion tensor imaging, DTI) is Typical Representative, and it can, according to the traveling of water diffusion direction tracer fiber, be the imaging technique that carries out the non-invasive research nerve fiber of live body.But DTI exists some shortcomings part: 1. sweep time is longer; 2., while selecting area-of-interest (ROI) to carry out fiber tracking in last handling process, there is part subjectivity in the selection of ROI; 3. the length that fiber is followed the trail of, angle etc. are subject to compared with multifactor impact, as FA threshold value, and the parameter influences such as angle tolerance.
DWI=Diffusion Weighted Imaging is the at present only non-invasive methods that can detect water diffusion motion in biological tissue.Disperse is a three dimensional process, molecule is equal or unequal along the distance of space a direction disperse, the mode of disperse can be divided into two kinds: a kind of referring in completely uniform medium, the motion of molecule is owing to there is no obstacle, distance to all directions motion equates, this kind of disperse mode is called isotropism (isotropic) disperse, for example in pure water, the disperse of hydrone is isotropism disperse, in human brain tissue, the disperse near-isotropic disperse of hydrone in cerebrospinal fluid and cerebral gray matter.Another kind of disperse has directional dependence, and in pressing the tissue of certain orientation arrangement, molecule is unequal to the distance of all directions disperse, is called anisotropy (anisotropic) disperse.In peripheral nerve, because there is the restriction of axon, hydrone disperse has anisotropy, and based on this principle, DTI, DWI can imaging peripheral nerves.
STIR=short time inversion recovery, short-tall inversion recovery, is all MRI(nuclear magnetic resonance, NMR with FLAIR) inversion-recovery sequence in the time series technique of imaging technique.STIR applies the IR of short reversing time (time of inversion, TI), can be suppressed at the high signal of fat on scanogram, is one of fat suppression (fat suppression) technology.
Summary of the invention
The object of the present invention is to provide a kind of fusion STIR, DWI advantage, the magnetic resonance scanning method scan simply, carrying out reliably peripheral nerve imaging.
Technical solution of the present invention is:
A magnetic resonance scanning method that carries out peripheral nerve imaging, is characterized in that: scanning sequence is STIR-DWI, and magnetic resonance imaging parameter is: TR: 10000ms, TI:220-250ms, TE:72.7ms, matrix: 96*96, FOV:12cm, bed thickness: 2.5-3.0mm; Interval: 0mm; NEX:10-12; B value 0,400-500s/mm
2.
Described peripheral nerve is wrist peripheral nerve.
The present invention scans simply, can carry out ADC value measured value, from function, assesses neural state; Post processing can adopt peak signal shadow casting technique (MIP)
,simple to operate, avoided the subjectivity of artificial picture ROI.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described.
Fig. 1, Fig. 2 are that the present invention scans original image.
Fig. 3 is the image after MIP processes.
The specific embodiment
A kind of magnetic resonance scanning method that carries out peripheral nerve imaging, scanning sequence is STIR-DWI (being about to STIR, DWI combines), magnetic resonance imaging parameter is: the TR(repetition time): 10000ms, TI(reversing time): 220-250ms, the TE(echo time): 72.7ms, matrix: 96*96, FOV:12cm, bed thickness: 2.5-3.0mm; Interval: 0mm; NEX(acquisition time): 10-12; B value (diffusion coefficient) 0,400-500s/mm
2.
Described peripheral nerve is wrist peripheral nerve.
The original image that scanning obtains, post processing can adopt peak signal shadow casting technique (MIP).
Claims (2)
1. carry out a magnetic resonance scanning method for peripheral nerve imaging, it is characterized in that: scanning sequence is STIR-DWI, and magnetic resonance imaging parameter is: TR: 10000ms, TI:220-250ms, TE:72.7ms, matrix: 96*96, FOV:12cm, bed thickness: 2.5-3.0mm; Interval: 0mm; NEX:10-12; B value 0,400-500s/mm
2.
2. the magnetic resonance scanning method that carries out peripheral nerve imaging according to claim 1, is characterized in that: described peripheral nerve is wrist peripheral nerve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310536306.4A CN103536289A (en) | 2013-11-04 | 2013-11-04 | Magnetic resonance scanning method for conducting peripheral nerve imaging |
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| CN201310536306.4A CN103536289A (en) | 2013-11-04 | 2013-11-04 | Magnetic resonance scanning method for conducting peripheral nerve imaging |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101627910A (en) * | 2008-07-17 | 2010-01-20 | 株式会社东芝 | Magnetic resonance imaging apparatus and magnetic resonance imaging method |
| CN102129055A (en) * | 2010-01-13 | 2011-07-20 | 株式会社东芝 | Magnetic resonance imaging apparatus |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101627910A (en) * | 2008-07-17 | 2010-01-20 | 株式会社东芝 | Magnetic resonance imaging apparatus and magnetic resonance imaging method |
| CN102129055A (en) * | 2010-01-13 | 2011-07-20 | 株式会社东芝 | Magnetic resonance imaging apparatus |
Non-Patent Citations (6)
| Title |
|---|
| 侯严振等: "弥散加权神经成像在臂丛神经成像中的参数优化", 《中国医学影像技术》 * |
| 张春燕等: "大范围扩散加权成像在3.0T MR应用的初步研究", 《中国医学影像技术》 * |
| 李长清等: "磁共振全身弥散加权背景抑制成像技术探讨", 《海南医学》 * |
| 李震等: "全身一体化MRI 和扩散加权成像在淋巴结肿瘤性病变中的应用", 《放射学实践》 * |
| 焦志云等: "核磁共振全身弥散加权成像技术及其临床应用", 《生物医学工程与临床》 * |
| 高立等: "弥散加权神经成像术诊断臂丛神经病变", 《中国医学影像技术》 * |
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Application publication date: 20140129 |