Takahashi M, Miyauchi T, Kowada M
Radiology. 1980 Mar;134(3):671-6. doi: 10.1148/radiology.134.3.7355216.
Diagnosis of moyamoya disease primarily depends on the angiographic demonstration of stenosis and occlusion of the carotid bifurcation, and extensive parenchymal and leptomeningeal collaterals. According to previous reports, computed tomography (CT) reveals multiple low density areas in the brain, with atrophic changes. Based on this review of six cases, CT with contrast enhancement often reveals tortuous, curvilinear vessels in the basal ganglia, corresponding to extensive parenchymal and leptomeningeal collaterals on angiography. The most proximal portions of the anterior and middle cerebral arteries are often poorly visualized. When multiple low density areas or subarachnoid hemorrhages are encountered on CT, these findings in the basal ganglia should be sought for differential diagnosis.
烟雾病的诊断主要依赖于血管造影显示颈内动脉分叉处狭窄和闭塞，以及广泛的实质和软脑膜侧支循环。根据既往报道，计算机断层扫描（CT）显示脑内多个低密度区，并伴有萎缩性改变。基于对6例病例的回顾，增强CT常显示基底节区迂曲的曲线状血管，对应于血管造影上广泛的实质和软脑膜侧支循环。大脑前动脉和大脑中动脉的最近端部分常常显示不清。当CT上发现多个低密度区或蛛网膜下腔出血时，应寻找基底节区的这些表现以进行鉴别诊断。
