Nael K, Villablanca J P, Saleh R, Pope W, Nael A, Laub G, Finn J P
Department of Radiological Sciences, David Geffen School of Medicine at University of California Los Angeles, 90095-7206, USA.
AJNR Am J Neuroradiol. 2006 Nov-Dec;27(10):2118-21.
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.
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。
