使用欠采样径向采集和高度约束投影重建的速度编码进行快速全脑 4D 对比增强磁共振血管成像：志愿者受试者的图像质量评估。
Fast whole-brain 4D contrast-enhanced MR angiography with velocity encoding using undersampled radial acquisition and highly constrained projection reconstruction: image-quality assessment in volunteer subjects.
机构信息
Department of Medical Physics, University of Wisconsin, Madison, 53705, USA.
出版信息
AJNR Am J Neuroradiol. 2011 Mar;32(3):E47-50. doi: 10.3174/ajnr.A2048. Epub 2010 Mar 11.
Abstract
We report on the image quality obtained by using fast contrast-enhanced whole-brain 4D radial MRA with 0.75-second temporal resolution, isotropic submillimeter spatial resolution, and velocity encoding (HYPRFlow). Images generated by HYPR-LR by using the velocity-encoded data as the constraining image were of diagnostic quality. In addition, we demonstrate that measurements of shear stress within the middle cerebral artery can be derived from the high-resolution 3D velocity data.
摘要
我们报告了使用 0.75 秒时间分辨率、各向同性亚毫米空间分辨率和速度编码（HYPRFlow）的快速对比增强全脑 4D 径向 MRA 获得的图像质量。使用速度编码数据作为约束图像的 HYPR-LR 生成的图像具有诊断质量。此外，我们证明可以从高分辨率 3D 速度数据中得出大脑中动脉内剪切应力的测量值。
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