Abstract
An investigation of vasospasm as seen angiographically after the onset of subarachnoid hemorrhage was carried out on 68 cases of intracranial aneurysms. The incidence of vasospasm, without regard to the length of time from repture of the intracranial anuerysm untill performance of angiography was 29%. The CT findings of these 68 cases were divided into five types as follows.
Type I: Subarachnoid hematoma could not be detected when CT was performed.
Type II: Subarachnoid hematoma was detected.
Type III: Subarachnoid hematoma with intracerebral hematoma.
Type IV: Subarachnoid hematoma with intraventricular hematoma.
Type V: Subarachnoid hematoma with intracerebral and intraventricular hematoma.
Correlation with CT types above mentioned and vasospasm was investigated, and some results could be obtained.
(Result)
1. The more the volume of subarachnoid hematoma, the higher the incidence of vasospasm.
2. The cases of type III, IV and V had a higher incidence of vasospasm than the cases of type I and II.
3. With regard to grade of vasospasm, the cases of type V were more severer than the cases of type I and II.
