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3T磁共振对比增强血管造影在颅内动脉瘤评估中的应用:与时间飞跃法磁共振血管造影的比较

Contrast-enhanced MR angiography at 3T in the evaluation of intracranial aneurysms: a comparison with time-of-flight MR angiography.

作者信息

Nael K, Villablanca J P, Saleh R, Pope W, Nael A, Laub G, Finn J P

机构信息

Department of Radiological Sciences, David Geffen School of Medicine at University of California Los Angeles, 90095-7206, USA.

出版信息

AJNR Am J Neuroradiol. 2006 Nov-Dec;27(10):2118-21.

Abstract

The combination of 3T and parallel-acquisition techniques holds promise for improved performance of contrast-enhanced MR angiography (MRA), in terms of speed, spatial resolution, and coverage. We present a comparison of 2 MRA techniques, including time-of-flight (TOF) and contrast-enhanced MRA, for detection and evaluation of intracranial aneurysms. Our results show that contrast-enhanced MRA with highly accelerated parallel acquisition at 3T does not have the known drawbacks of TOF-MRA techniques, including prolonged acquisition time, spin saturation, and flow-related artifacts, with comparable aneurysm characterization.

摘要

3T与并行采集技术相结合,有望在速度、空间分辨率和覆盖范围方面提高对比增强磁共振血管造影(MRA)的性能。我们对两种MRA技术进行了比较,包括时间飞跃法(TOF)和对比增强MRA,用于检测和评估颅内动脉瘤。我们的结果表明,3T下采用高度加速并行采集的对比增强MRA没有TOF-MRA技术的已知缺点,如采集时间延长、自旋饱和和血流相关伪影,且动脉瘤特征相当。

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