Normal cerebral angiogram and that of moyamoya patient
Normal cerebral angiogram (A)             　　　　　Angiogram of moyamoya patient (B)
These angiograms are antero-posterior views of the right carotid artery injection. Contrary to the left normal angiogram (A), angiogram of moyamoya patient shows marked development of the moyamoya vessels at the base of the brain and marked narrowing of the terminal portion of the internal carotid artery. The middle cerebral and anterior cerebral arteries are poorly visualized in (B).