胎儿侧脑室扩张的产前影像学诊断及预后

Prenatal imaging diagnosis and prognosis of fetal cerebral ventriculomegaly

胎儿侧脑室扩张是最常见的中枢神经系统异常,超声可以早期发现,并动态监测宫内转归。MRI对胎脑发育的评价具有多方面的价值和意义,不仅可以弥补超声不足,进一步判断扩张程度,寻找病因及伴发畸形,而且也是出生后患儿预后评价的主要手段。胎儿侧脑室扩张程度不同,其预后不同。侧脑室宽度<12 mm的胎儿预后良好,对于宫内未完全转归的胎儿应重视出生后的远期随访。

The fetal cerebral ventriculomegaly is the most common central nervous system abnormality. Fetuses with ventriculomegaly can be detected at early stage by prenatal uhrasonography. Ultrasound can dynamically monitor the width of fetal lateral ventricle. Magnetic resonance imaging has various clinical value and significance for evaluation the development of the fetal brain. As a necessary complement to ultrasound, MRI is used not only to determine the expansion degree, to find the cause and associated abnormalities, but also to evaluate the prognosis after birth. The prognosis of fetal lateral ventricle enlargement varies considerably. While isolated mild ventriculomegaly has better prognosis in which lateral ventricle width 〈12 mm. For incompletely back to normal of the lateral ventricle in uterus, fetus should be paid attention to long-term followup after birth.