N Concordance 1 al aneurysm so that definitive cerebral angiography can be performed. The combin 2 which patients need diagnostic cerebral angiography? A prospective study of 206 3 ial stenosis was determined by cerebral angiography or noninvasive methods. RESU 4 aphy (MRA) and 13 conventional cerebral angiography (CCA) were analyzed. Most CA 5 d CSF examination were normal. Cerebral angiography revealed a dural arterioveno 6 atients did not undergo either cerebral angiography or carotid endarterectomy. F 7 d after surgery and subsequent cerebral angiography revealed good anterograde fi