Obliteration of the quadrigeminal cisterns was classified on the CT scans into three grades: normal (Grade I), compressed (Grade II), or absent (Grade III). There were 43 patients with Grade I ...

A repeat CT scan revealed a substantial accumulation of subarachnoid blood over the right cortical convexity, the right Sylvian fissure, the interhemispheric fissure, and the basal cisterns ...