Variants of Blood Supply to Kidney Segments According to 3d Anatomical Analysis

The study aimed to conduct a 3D anatomical analysis of corrosive preparations to identify the sources of blood supply to the kidney segments in the most common variant of the division of the main renal artery, A. renalis (I). The authors have studied 116 corrosive preparations of the human kidney arterial system made of fast-hardening polymers. On 3D models, the authors have determined the number and topography of arterial segments in the kidney depending on the number of identified segmental arteries (as sources of arterial segments) in a 3D projection: a) with the magistral type of arterial branching; b) with the loose type of arterial branching. The study has shown that the sources of blood supply to the kidney segments and the number of segmental arteries supplying the segments, as well as the places of their discharge and topography, have their differences depending on both the variants of the division of the main renal artery and the types of branching of its intra-organ branches. Consequently, in the kidneys, depending on the types of intra-organ branching (magistral or loose) and the level of dior trichotomy, each specific segmental artery has its place, localization, source of discharge, and arterial basin, branching in the segments of the kidney. In one segment of the kidney, basins can be distributed on average (X ± m) from 1 to 3 segmental arteries, at p ≤ 0.05. It has been found that the polar and dorsal segments of the kidney more often have more segmental arteries.