胎儿

There were four fetal deaths and one anencephalus in B19-DNA positive group. There was no fetal deaths or congenital malformation in B19-DNA negative group.

其中在67例B19 DNA阳性者中，发生4例死胎和1例无脑儿，在268例B19 DNA阴性者中，无一例发生死胎和胎儿畸形，阳性与阴性者间比较，差异有显著性(P.05)。

Anencephaly is absence of the fetal cranial vault.

无脑儿是胎儿颅穹窿缺陷。

As in anencephaly, the fetal cranium is absent; howeer, unlike in anencephaly, brain tissue is always present Fig.

和无脑畸形一样，胎儿无头盖骨；但与无脑畸形不同的是，脑组织始终存在（图10-38）。

In contrast to hydrocephalus, fetuses with hydranencephaly hae a complete lack of cerebral tissue, and in contrast to anencephaly, there is coering by bone, skin, dura, and leptomeninges(33) Fig.

与脑积水相比较，患有水脑畸形的的胎儿完全缺乏脑组织，而与无脑畸形相比，它有骨、皮肤、硬脑膜和蛛网膜覆盖（图10-26）。

Daily su****ementation with folic acid for 1 month prior to conception and during pregnancy may reduce the incidence of neural tube defects such as spina bifida and anencephaly in the child.

在怀孕前一个月及怀孕过程中对叶酸的补充会减低胎儿患神经系统疾病的机率，例如脊柱裂和脑血管畸型。

The absence of the fetal cranial vault in anencephaly is shown here.

无脑儿显示胎儿颅穹窿缺陷。

Anencephaly, the single most common open neural tube defect, is characterized by the absence of the cerebral hemispheres and the lack of bony calarium aboe the orbits Fig.

无脑畸形，最常见的单一的开放性神经管缺损，其特点是无大脑半球且没有眼眶以上的骨性颅盖（图10-37A-B和图10-37C）。胎儿有正常的中脑和后颅窝，但大脑半球未正常发育。

The use of prenatal ultrasound for the detection of fetal aneuploidy.

孕期血清学筛查及超声检查在诊断胎儿染色体异常中的价值。

Antenatal complications can affect a baby's health.

胎儿期并发症能影响婴儿的健康。

Objective to discuss the clinical value in the antenatal diagnosis of fetal deformity with three-dimensional ultrasound.

目的 探讨三维超声产前诊断胎儿畸形的临床应用价值，提高诊断的准确性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。