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100例脑底动脉环测量的结果表明在国人脑底动脉环中出现线状异常(交通动脉外径<0.5mm,其余动脉外径<1.0mm)动脉的占20％(20例);各动脉长度变异系数最大者为前交通动脉(39.92),直径变异系数最大者为右后交通动脉(40.32),其次为左后交通动脉(36.94)(表3);构成脑底动脉环的各对动脉的长度间没有显著差异,但其外径多数左侧大于右侧,并且有显著差异;大脑后动脉与后交通动脉的外径间成反比关系。此外,本文还讨论了脑底动脉环的机能意义及动脉环异常的临床意义。
The measurement of 100 cases of cerebral artery rings showed that there were 20% (20 cases) of linear abnormalities in the cerebral artery rings (the diameter of arterial artery was less than 0.5mm and the diameter of other artery was less than 1.0mm) The length of the largest coefficient of variation of the anterior communicating artery (39.92), the largest diameter coefficient of variation for the right posterior communicating artery (40.32), followed by the left posterior communicating artery (36.94) (Table 3); constitute the cerebral artery artery rings There is no significant difference between the length, but most of the left outer diameter greater than the right, and there is a significant difference; posterior cerebral artery and posterior communicating artery diameter is inversely proportional relationship. In addition, this article also discusses the functional significance of the cerebral artery rings and the clinical significance of abnormal arterial rings.