Open AccessThe posterior thalamoperforating artery (the main perforating trunk from P1) microsurgical study
Author(s) -
Aziz Rassi Neto,
Ápio Cláudio Martins Antunes,
Fernando Menezes Braga
Publication year - 2017
Publication title -
jornal brasileiro de neurocirurgia
Language(s) - English
Resource type - Journals
eISSN - 2446-6786
pISSN - 0103-5118
DOI - 10.22290/jbnc.v3i4.77
Subject(s) - anatomy , posterior cerebral artery , trunk , perforating arteries , medicine , thalamus , posterior communicating artery , basilar artery , midbrain , cerebral arteries , anterior choroidal artery , artery , middle cerebral artery , biology , internal carotid artery , surgery , radiology , central nervous system , cardiology , ischemia , ecology
Thirty fresh human brains were studied regarding to the anatomy of the posterior thalamoperforating arteries (PThPA): origin, number, diameter, traject, distance from the basilar artery bifurcation, type of distribution and correspondent area of vascularization. Most of the PThPAs originated proximally in the posterior cerebral artery (PCA), irrigating the cerebral, peduncles, mammilary bodies, ventral portion of midbrain and, through the posterior perforated substance, the medial portion of thalamus. The mean number of PThPAs per hemisphere was 1.51, mean proximal diameter 0.60 mm and mean distance from PCA origin 2.47 mm. A deep knowledge of the microsurgical anatomy of PThPAs is stressed, as devastating lesions can develop after arterial compromise during neurosurgical procedures.