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胎儿一侧脑后角宽多少正常

更新时间: 2020-11-04 00:00:00     

胎儿一侧脑后角宽的正常值是不超过1.0cm,1.0-1.5cm称脑室轻度扩张,超过1.5cm称脑积水。侧脑室后角宽度是胎儿的一种遗传标记物,在胎儿系统超声时如果发现数值大于10毫米,需要进一步做胎儿脑部磁共振检查。也提示胎儿患染色体异常的风险增高,需要进一步产前诊断。胎儿系统超声时检查的遗传标记物还包括肾盂增宽、单脐动脉、脉络膜囊肿、肠管回声增强等。

关键词: 胎儿 一侧 多少 正常

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