Isoda H, Hirano M, Takeda H, Kosugi T, Alley M T, Markl M, Pelc N J, Sakahara H
Department of Radiology, Hamamatsu University, School of Medicine, Hamamatsu, Japan.
AJNR Am J Neuroradiol. 2006 May;27(5):1119-22.
We performed time-resolved 3D phase-contrast MR imaging by using a 1.5T MR scanner to visualize hemodynamics in a silicon vascular model with a middle cerebral aneurysm. We ran an aqueous solution of glycerol as a flowing fluid with a pulsatile pump. Time-resolved images of 3D streamlines and 2D velocity vector fields clearly demonstrated that the aneurysm had 3D complex vortex flows within it during systolic phase. This technique provided us with time-resolved 3D hemodynamic information about the intracranial aneurysm.
我们使用1.5T磁共振成像扫描仪进行了时间分辨三维相位对比磁共振成像,以可视化患有大脑中动脉瘤的硅血管模型中的血流动力学。我们用脉动泵输送甘油水溶液作为流动流体。三维流线和二维速度矢量场的时间分辨图像清楚地表明,在收缩期,动脉瘤内部存在三维复杂涡流。该技术为我们提供了关于颅内动脉瘤的时间分辨三维血流动力学信息。