[Detailed demonstration of aneurysms at the base of the brain by angiotomography (author's transl].

Exact knowledge of the morphology and topography of arterial aneurysms at the base of the brain is of great importance to the neurosurgeon. Angio-tomography can provide more detailed information than any other method, particularly in the case of saccular aneurysms with short necks and aneurysms in close proximity to large, thin-walled vessels. It can also clarify the situation in the case of several vessels lying close together. Angio-tomographic examinations were performed in fifteen patients, with seventeen aneurysms. The value of angiotomography in the detailed diagnosis of basal, cerebral aneurysms, particularly of the anterior communicating artery, is illustrated by four selected case reports.