ASYMMETRY AND ANOMALIES OF THE CIRCLE OF WILLIS IN FETAL BRAIN - MICROSURGICAL STUDY AND FUNCTIONAL REMARKS
ASYMMETRY AND ANOMALIES OF THE CIRCLE OF WILLIS IN FETAL BRAIN - MICROSURGICAL STUDY AND FUNCTIONAL REMARKS
复制标题
DOI：
10.1016/0090-3019(85)90275-7
复制
发表时间：
1985-01-01
影响因子：
--
通讯作者：
PUZIC, M
中科院分区：
文献类型：
--
作者：
MILENKOVIC, Z;VUCETIC, R;PUZIC, M
用手术显微镜观察了20 ~ 40周胎龄胎儿脑威利斯动脉圈动脉的变化。大多数胎儿在24-32周龄之间。结果表明：1)各节的平均直径比成虫的平均直径窄4 ~ 5倍，同一节的平均长度比成虫的平均长度短2 ~ 2.5倍；2)成人穿支数量与穿支动脉数量相对应；3)识别发育不全的节段，以及异常和变异；4)在高比例的情况下，发现左右对应节段之间的口径几乎相等；5)在大多数情况下，一个多边形，很像成人的“不稳定”的圆，被解剖。“胎儿”或“理想”圆圈在低比例的病例中发现。
The arteries of the circle of Willis in fetal brains of 20-40 weeks of gestational age were studied with the operating microscope. The majority of fetuses were between 24-32 weeks of age. Our findings were as follows: 1) the average diameters of all segments were 4-5 times narrower than the average diameters in adults, and the average lengths of the same segments were 2-2.5 times shorter than the same lengths in adults; 2) the number of perforators corresponded with the perforating arteries in adults; 3) hypoplastic segments, as well as anomalies and variations, were identified; 4) calibers almost equal in size between the right and left corresponding segments were found in a high proportion of cases; 5) in the majority of cases a polygon, much like the "precarious" circle in adults, was dissected. The "fetal" or the "ideal" circles were found in a low proportion of cases.