颈内动脉的“假性闭塞”：颅内磁共振血管造影的一个陷阱。
"Pseudoocclusion" of the internal carotid artery: a pitfall on intracranial MRA.
作者信息
Okamoto K, Ito J, Furusawa T, Sakai K, Tokiguchi S
机构信息
Department of Radiology, School of Medicine, Niigata University, Japan.
出版信息
J Comput Assist Tomogr. 1997 Sep-Oct;21(5):831-3. doi: 10.1097/00004728-199709000-00033.
Abstract
We report a case showing "pseudoocclusion" of the internal carotid artery as a pitfall on intracranial MRA. Pseudoocclusion was attributed to magnetic susceptibility artifacts with metallic substances located proximal to a slab. The same finding could be reproduced on experimental MRA with a small steel coil applied on the anterior neck of a volunteer at the level of the carotid bifurcation.
摘要
我们报告一例显示颈内动脉“假性闭塞”的病例，这是颅内磁共振血管造影（MRA）中的一个陷阱。假性闭塞归因于位于层面近端的金属物质引起的磁敏感性伪影。在志愿者颈动脉分叉水平的前颈部施加一个小钢圈的实验性MRA中可以重现相同的发现。
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