Delwa M. The peculiarities of brain's arterial circle at different structural variants of its backside part

The dissertation is devoted to revealing of individual structural variability of backside part of brain's arterial circle. Among the methods were used macroscopical, histological, morfometrical and techniques of transmission electron microscopy. It was studied the primary variability of backside of brain's arterial circle. We have detected the internal diameters, length and histometrical factors of vessels at different structural variants of brain's arterial circle backside part. It was analyzed the correlation between morfometrical factors of arteries of brain's arterial circle in cases with different degree of development the posterior communicating artery. It was established that at the presence of stenotic fibrosis patch in the internal portion of vertebral arteries, posterior communicating arteries are transforming in active anastomoses with developing a series of compensatory adaptive and pathological changes.