Comparison of MR signal intensities of cerebral perivascular (Virchow-Robin) and subarachnoid spaces
Comparison of MR signal intensities of cerebral perivascular (Virchow-Robin) and subarachnoid spaces
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DOI：
10.1097/00004728-200211000-00008
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发表时间：
2002-11-01
影响因子：
1.3
通讯作者：
Aydingöz, Ü
中科院分区：
文献类型：
--
作者：
Öztürk, MH;Aydingöz, Ü
目的：定量比较血管周围间隙(Virchow-Robin)和脑脊液(CSF)的T2加权MR信号强度。方法：对44例无明显脑病理改变的受试者进行头颅3D T2加权快速自旋回波磁共振成像。结果：脑室和蛛网膜下腔的脑血管周围间隙和脑脊液的平均MR信号强度值差异有统计学意义。脑室和蛛网膜下腔的信号强度差异无统计学意义。结论：脑血管周围的信号强度不同于脑内及周围的含脑脊液结构。这一发现与血管周围间隙代表间质液体的卡压，而不是充满脑脊液的蛛网膜下腔鞘的内陷的说法是一致的。
Purpose: The purpose of this work was to compare quantitatively the T2-weighted MR signal intensity values of the perivascular (Virchow-Robin) spaces and the cerebrospinal fluid (CSF).Method: Coronal 3D T2-weighted turbo spin echo MR images of the brain Acre evaluated in 44 subjects without any significant cerebral pathology. MR signal intensity values of the perivascular spaces around the anterior commissure and the CSF in the ventricles and the subarachnoid space were measured.Results: A statistically significant difference between the mean MR signal intensity values of the perivascular spaces and the CSF both in the ventricles and in the subarachnoid space was found. The intensity values in the ventricles and in tile subarachnoid space were not statistically significantly different.Conclusion: The perivascular spaces have a different MR signal intensity than the CSF-containing structures within and around the brain. This finding is in keeping with the statement that the perivascular spaces represent entrapments of interstitial fluid and are not the invagination of CSF-filled subarachnoid sheaths.