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Vascular supply of thalamus and midbrain

Axial diagram of midbrain at the level of the superior colliculus- ICA: internal carotid artery, MCA: middle cerebral artery, P Com A: posterior communicating artery, ATPA: anterior thalamoperforating artery, PTPA: posterior thalamoperforating artery, BA: basilar artery; SCA: superior cerebellar artery, PCA: posterior cerebral artery, P1, P2, P3: 1st 3 segments of PCA, TGA: thalamogeniculate arteries, PPA: parapeduncular perforating artery, PMA: paramedian mesencephalic artery, RN: red nucleus, C Peduncle: cerebral peduncle, sub nigra: substantia nigra. (Contributed by Dr. Jose Biller.)

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