The comparison of usefulness of computer tomography and angiography in diagnostics of intracranial vascular anomalies.

We evaluated 84 patients with SAH to compare the clinical usefulness of CT and cerebral angiography in diagnostics of intracranial vascular anomalies as a source of SAH. Angiography was more effective in detection of aneurysms (in 67.9% cases), also multiple aneurysms. Both methods showed angiomas equally well (in 100%). The agreement in the aneurysms localisation was only 17%. The effectiveness of subtentorial aneurysms detection was poor in both methods (especially in CT). The most common localisation of aneurysms were: the middle cerebral artery, communicating anterior artery, internal carotid artery, anterior artery.