Abstract
Angiographic findings of 105 cases with internal carotid artery (ICA) occlusion were classified into 10 types according to the site of the occlusion and the development of the direct and indirect collaterals. Angiographic and pathologic correlation was made on 12 autopsy cases in the pre-CT era. Furthermore, clinical, angiographic, and pathological features were evaluated in 9 cases with probable embolic occlusion out of the 12 autopsy cases. Extent of the infarction on the CT of 93 out of the 105 cases with ICA occlusion was classified into 6 types and correlated with the angiographic types and the nature of ICA occlusion (embolism vs thrombosis). The roles of CT and angiography in the evaluation of disturbances in the cerebral circulation were discussed.
