ALT AICA, anterior inferior cerebellar artery; APS, anterior perforated substance; ASA, anterior spinal artery; BA, basilar artery; CauPerf, caudal perforator; CoA, collicular artery; FC, foramen cecum; LCPerf, long circumflex perforator; LMedPerf (Pica), lateral medullary perforator (PICA origin); LMedPerf (Vert), lateral medullary perforator (vertebral artery origin); MPerf, medullary perforating artery; PadA, Padget arcade; PaPerf, paramedian perforator; PerfAnast, perforating arteries anastomoses; PCA, posterior cerebral artery; PICA, posterior inferior cerebellar artery; PCoA, posterior communicating artery; PonA, pontine artery; RoPerf, rostral perforator; SCA, superior cerebellar artery; SCPerf, short circumflex perforator; TPA, thalamoperforators; VA, vertebral artery.