[Intra-arterial digital subtraction angiography (IADSA) of intracranial lesions (an analysis of 600 cases)].

Intracranial vessels were evaluated in 600 patients with IADSA. Among them, 100 cases were studied with both conventional angiography and IADSA. The advantages of IADSA are: (1) Good image quality; (2) Examination time shortened; (3) Very useful for interventional neuroradiology, hence it can replace conventional cerebral angiography for preoperative evaluation in most cases.