Abstract
Dynamic computed tomography (CT) with intravenous bolus injection of contrast medium were performed on 5 patients under the condition of cerebral angiospasm after the rupture of intracranial aneurysms. Rapid serial scans (8 scans per minutes) were performed and the results were demonstrated as the time-density curve of any region of interest. On this study, cerebral hemispheres of both sides were chosen as the region of interest, and the time-density curves of both sides were compared.
As a result, in the case with the clinical neurological deficit, the time-density curves of both hemispheres showed a different pattern as the delayed peak and/or poor elevation of time-density curve in the lesional side. On the other hand, in the cases without clinical neurological deficit, the time-density curves showed the same pattern in both hemispheres.
Dynamic CT was non-invasive examination for the patient and its technical procedure was easy. So this study was thought to be a good method to know the brain circulation in the case of cerebral angiospasm.
