The ring-like vascular pattern in cerebral arteriography.
D001254:Astrocytoma; D001922:Brain Abscess; D001932:Brain Neoplasms; D002533:Cerebral Angiography; D005909:Glioblastoma; D006394:Hemangiosarcoma; D006801:Humans
ANGIOSARCOMA; ASTROCYTOMA; BRAIN ABSCESS; BRAIN NEOPLASMS; CEREBRAL ANGIOGRAPHY; GLIOBLASTOMA MULTIFORME