The purpose of this study is to determine whether or to what extent computerized tomography angiography (CTA) can replace digital subtraction angiography (DSA) for ruptured anterior circulation cerebral aneurysms. We reviewed our patients in two different periods and evaluated in what cases we should perform additional DSA. In the first period, both CTA and DSA were routinely performed except on patients that were suitable for emergent surgery with CTA only. In the second period, only CTA was performed routinely as a preoperative workup and if further information was necessary, additional DSA was performed. A total of 106 (52 in the first period and 54 in the second period) patients were included. Characteristics of the patients and outcome at three months were similar in the two periods. In the second period, ten patients underwent additional DSA. Our results suggest that most of cases with ruptured anterior circulation aneurysms can be successfully treated on the basis of CTA alone.
Copyright 2002 Harcourt Publishers Ltd.