视交叉和视路的磁共振成像。
MRI of optic chiasm and optic pathways.
作者信息
Albert A, Lee B C, Saint-Louis L, Deck M D
出版信息
AJNR Am J Neuroradiol. 1986 Mar-Apr;7(2):255-8.
Eight verified lesions of the optic chiasm were examined on 0.5 T magnetic resonance (MR) and GE 9800, 8800 computed tomographic (CT) scanners. Enlargement of the optic chiasm was demonstrated in all cases. There was some change of MR signal compared with brain in all but one case, which had no resemblance to contrast enhancement on CT scans. The signal was specific for hematoma in one case. Abnormal signal, probably signifying tumor spread into the optic radiation, was detected on T2-weighted images in one case. The resolution of MR scans is similar or superior to CT, and sagittal views are most useful in evaluating lesions in this location.
在0.5T磁共振（MR）以及GE 9800、8800计算机断层扫描（CT）扫描仪上对8例经证实的视交叉病变进行了检查。所有病例均显示视交叉增大。除1例在CT扫描上无类似对比增强表现外，其余所有病例的MR信号与脑相比均有一些变化。1例中信号对血肿具有特异性。1例在T2加权图像上检测到异常信号，可能提示肿瘤扩散至视辐射。MR扫描的分辨率与CT相似或更优，矢状位视图对评估该部位病变最有用。
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