Evaluation of human telencephalon microangioarchitecture in fetal period

The aim of the work was to examine internal vascularization of telencephalon. The brains of 200 fetuses aged 3-8 months of fetal life were examined. Various techniques were used: injection, infrared, Pickworht's method, image computer transformation. Linear and non-linear transformations (mathematical morphology) were also used. The five vascular layers of telencephalon were distinguished: cortical, of white matter, striatal, germinal and of choroid plexus. Their morphology and changes occurring in fetal period were estimated. It was observed that subcortical and paraventricular regions belong to hypovascular areas. White matter vessels were seen as rectilinear without any ramifications. After 6 months of fetal life the most intensive development of inner cerebral vessels occurs. Two age groups were distinguished. The first one comprises the period of 4th to 6th month and is characterized by the existence of long medullary and abundant germinal matrix vessels. The second group (over 7th months) may be described as intensive development of cortical vessels.