Levina G Ia, Lozhnikova S M, Vavilova T I, Mitrofanov M P, Ronis I V
Arkh Patol. 1975;37(7):18-22.
Random studies of the base of the brain vessels in 278 men who had died at the age of 50--64 years were carried out; 29 variants of the structure of the circle of Willis were established; the most common were threadlike connective arteries and posterior trifurcations of the inner carotid arteries. The investigation of atherosclerotic changes in every vessel of the base of the brain showed that in the so-called posterior trifurcations there was a statistically reliable growth of the average degree of atherosclerosis in the intracranial region of the inner carotid artery ensuring in these cases the blood supply for a considerably greater region of the brain. In posterior connective arteries atherosclerotic changes were revealed only when their diametre exceeded 0.1 cm which testified to the bloodflow in these arteries.
对278名年龄在50至64岁之间死亡男性的脑底血管进行了随机研究；确定了29种 Willis 环结构变体；最常见的是丝状结缔组织动脉和颈内动脉后三叉。对脑底每条血管的动脉粥样硬化变化进行的调查表明，在所谓的后三叉处，颈内动脉颅内区域的动脉粥样硬化平均程度在统计学上有可靠的增长，在这些情况下确保了大脑相当大区域的血液供应。在后结缔组织动脉中，仅当其直径超过0.1厘米时才发现动脉粥样硬化变化，这证明了这些动脉中的血流情况。
