Identify the cortical branches of the cerebral artery (ACA) and middle cerebral artery (MCA). Follow the course of the internal carotid artery (ICA). Remember that aneurysms of the posterior communicating artery may result in third-nerve palsy. The paracentral lobule is irrigated by the callosomarginal artery. Cortical branches of the MCA are designated with dots. PCoM = posterior communicating artery.

Identify the anterior cerebral artery (ACA), middle cerebral artery (MCA), and internal carotid artery (ICA). The horizontal branches of the MCA perfuse the basal ganglia and internal capsule. ACoM = anterior communicating artery.

Two structures are found between the posterior cerebral artery (PCA) and the superior cerebellar artery: the tentorium and the third cranial nerve. PCoM = posterior communicating artery; PICA = posterior inferior cerebellar artery; SCA = superior cerebellar artery.

Which artery supplies the visual cortex? The calcarine artery, a branch of the posterior cerebral artery (PCA). Occlusion of the PCA (calcarine artery) results in a contralateral homonymous hemianopia, with macular sparing. PICA = posterior cerebellar artery.

Shows the cerebral veins and venous sinuses.

A. Carotid angiogram, lateral projection. B. Carotid angiogram, anteroposterior projection. C. Vertebral angiogram, lateral projection. D. Vertebral angiogram, anteroposterior projection.