相位对比磁共振成像中的扰相射频脉冲分析

doi:10.12068/j.issn.1005-3026.2015.05.006

东北大学学报:自然科学版 ›› 2015, Vol. 36 ›› Issue (5): 631-635.DOI: 10.12068/j.issn.1005-3026.2015.05.006

相位对比磁共振成像中的扰相射频脉冲分析

邹云鹏，付长信，康雁

(东北大学中荷生物医学与信息工程学院，辽宁沈阳110819)

收稿日期:2014-03-26 修回日期:2014-03-26 出版日期:2015-05-15 发布日期:2014-11-07
通讯作者: 邹云鹏
作者简介:邹云鹏(1983-)，男，四川江油人，东北大学博士研究生; 康雁(1964-)，男，辽宁沈阳人，东北大学教授，博士生导师.
基金资助:
国家自然科学基金资助项目(61372014).

The Analysis of the RF Spoiling for Phase-Contrast Magnetic Resonance Imaging

ZOU Yun-peng， FU Chang-xin， KANG Yan

School of Sino-Dutch Biomedical & Information Engineering， Northeastern University， Shenyang 110819， China.

Received:2014-03-26 Revised:2014-03-26 Online:2015-05-15 Published:2014-11-07
Contact: KANG Yan
About author:-
Supported by:
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摘要/Abstract

摘要： 应用仿真实验研究了在基于梯度回波的2维相位对比磁共振序列中扰相射频脉冲的作用，应用模体和志愿者实验来确定在准确测量血流的前提下扰相射频脉冲对相位对比磁共振图像和血流测量结果的影响.相位对比磁共振对血流的测量结果显示:当扰相梯度充足时，是否使用扰相射频脉冲对测量结果无明显影响；但是当扰相梯度不充分时，使用扰相射频脉冲成像测量的血流更准确；并且使用扰相射频脉冲可以改善图像的对比度，更容易区分血流区域和静态组织.

关键词: 磁共振成像, 相位对比, 扰相射频脉冲, 对比度噪声比, 梯度回波

Abstract: The effects of RF spoiling was investigated in GRE based 2D phase contrast (PC) MRI.Simulation， flow phantom experiments and in vivo experiments were used to evaluate the effects of RF spoiling in quality of PC MRI image and accuracy of measured flow. The measurements of blood flow with 2D through-plane PC-MRI indicated that there was no difference when sufficient gradient spoiling was applied with or without RF spoiling， but there was a much better result when insufficient gradient spoiling was applied with RF spoiling compared with that without the RF spoiling. And it was also found that the CNR(contrast noise ratio) of the PC-MRI image could be increased with RF spoiling， which made it easier to differentiate the flow and stationary tissue.

Key words: magnetic resonance imaging, phase-contrast, RF spoiling, CNR(contrast noise ratio), gradient echo

中图分类号:

TP391

邹云鹏，付长信，康雁. 相位对比磁共振成像中的扰相射频脉冲分析[J]. 东北大学学报:自然科学版, 2015, 36(5): 631-635.

ZOU Yun-peng， FU Chang-xin， KANG Yan. The Analysis of the RF Spoiling for Phase-Contrast Magnetic Resonance Imaging[J]. Journal of Northeastern University Natural Science, 2015, 36(5): 631-635.

参考文献

[1]Bryant D J，Payne J A，Firmin D N，et al.Measurement of flow with NMR imaging using a gradient pulse and phase difference technique［J］.Journal of Computer Assisted Tomography，1984，8(4):588-593.
[2]Thompson R B，Mcveigh E R.Fast measurement of intracardiac pressure differences with 2D breath-hold phase-contrast MRI［J］.Magnetic Resonance in Medicine，2003，49 (6):1056-1066.
[3]Srichai M B，Lim R P，Wong S，et al.Cardiovascular application of phase-contrast MRI［J］.American Journal of Roentgenology，2009，192 (3):662-675.
[4]Lotz J，Meier C，Leppert A，et al.Cardiovascular flow measurement with phase-contrast MR imaging:basic facts and implementation［J］.Radiographics，2002，22 (3):651-671.
[5]Gatehouse P D，Keegan J，Crowe L A，et al.Applications of phase-contrast flow and velocity imaging in cardiovascular MRI［J］.European Radiology，2005，15(10):2172-2184.
[6]Battal B，Kocaoglu M，Bulakbasi N，et al.Cerebrospinal fluid flow imaging by using phase-contrast MR technique［J］.British Journal of Radiology，2011，84 (1004):758-765.
[7]Bernstein M A，King K F，Zhou X J.Handbook of MRI pulse sequences［M］.Burlington:Elsevier Academic Press，2004.
[8]Draney M T，Arko F R，Alley M T，et al.Quantification of vessel wall motion and cyclic strain using cine phase contrast MRI:in vivo validation in the porcine aorta［J］.Magnetic Resonance in Medicine，2004，52 (2):286-295.
[9]Overall W R，Nishimura D G，Hu B S.Fast phase-contrast velocity measurement in the steady state［J］.Magnetic Resonance Imaging，2002，48 (5):890-898.
[10]Moser K W，Georgiadis J G，Buckius R O.On the accuracy of EPI-based phase contrast velocimetry［J］.Magnetic Resonance Imaging，2000，18(9):1115-1123.
[11]Gatehouse P D，Keegan J，Crowe L A，et al.Applications of phase-contrast flow and velocity imaging in cardiovascular MRI［J］.European Radiology，2005，15(10):2172-2184.
[12]Zur Y，Wood M L，Neuringer L J.Spoiling of transverse magnetization in steady-state sequences［J］.Magnetic Resonance in Medicine，1991，21(2):251-263.
[13]Zur Y，Stokar S，Bendel P.An analysis of fast imaging sequences with steady-state transverse magnetization refocusing［J］.Magnetic Resonance in Medicine，1988，6(2):175-193.
[14]Scheffler K.A pictorial description of steady-states in rapid magnetic resonance imaging［J］.Concepts in Magnetic Resonance，1999，11(5):291-304.

相位对比磁共振成像中的扰相射频脉冲分析

The Analysis of the RF Spoiling for Phase-Contrast Magnetic Resonance Imaging

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