扩散张量磁共振成像可显示胼胝体发育不全时半球纤维连接的改变。
Diffusion tensor MR imaging visualizes the altered hemispheric fiber connection in callosal dysgenesis.
作者信息
Lee Seung-Koo, Mori Susumu, Kim Dong Joon, Kim Sei Young, Kim Si Yeon, Kim Dong Ik
机构信息
Department of Diagnostic Radiology and Research Institute of Radiological Science, Yonsei University College of Medicine, Seoul, Korea.
出版信息
AJNR Am J Neuroradiol. 2004 Jan;25(1):25-8.
Abstract
We report three cases of callosal dysgenesis that were evaluated by diffusion tensor imaging and fiber tractography. In partial agenesis of corpus callosum, fiber tracts from all regions of brain converged to a partially developed small genu portion and connected to the contralateral side. In complete callosal agenesis, fibers from the hemispheres failed to cross the midline and formed thick bundles running anteroposteriorly (eg, Probst bundle). The thickness of the anterior commissure was enlarged or smaller than normal brain, and other white matter tracts were not markedly different from normal brain tissue.
摘要
我们报告了三例经扩散张量成像和纤维束成像评估的胼胝体发育不全病例。在胼胝体部分发育不全中，来自脑各区域的纤维束汇聚到部分发育的小膝部，并与对侧相连。在完全性胼胝体发育不全中，来自半球的纤维未能穿过中线，而是形成了沿前后方向走行的粗大纤维束（如普罗布斯特束）。前连合的厚度大于或小于正常脑，其他白质束与正常脑组织无明显差异。
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