高血压脑病所致短暂性皮质盲。磁共振成像相关性研究。
Transient cortical blindness due to hypertensive encephalopathy. Magnetic resonance imaging correlation.
作者信息
Marra T R, Shah M, Mikus M A
机构信息
Department of Neurology, SinaiSamaritan Medical Center, Milwaukee, Wisconsin 53223.
出版信息
J Clin Neuroophthalmol. 1993 Mar;13(1):35-7. doi: 10.3109/01658109309037000.
Striking reversible signal intense magnetic resonance imaging (MRI) lesions were observed in the occipital cortex of a 16-year-old girl who presented with an attack of transient cortical blindness as the initial manifestation of hypertensive encephalopathy (HTE). The lesions were seen to best advantage on T2-weighted imaging and were not visible on computed tomography (CT). It is proposed that such occipital lobe MRI lesions likely reflect extravasation of fluid and proteins across the blood brain barrier, damaged as a consequence of cerebral autoregulation failure.
在一名16岁女孩的枕叶皮质中观察到明显的可逆性高强度磁共振成像（MRI）病变，该女孩以短暂性皮质盲发作作为高血压脑病（HTE）的初始表现。这些病变在T2加权成像上显示最为清晰，而在计算机断层扫描（CT）上不可见。有人提出，这种枕叶MRI病变可能反映了由于脑自动调节功能衰竭导致血脑屏障受损，从而使液体和蛋白质外渗。
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