中孕期胎儿颅脑超声诊断价值

Ultrasonographic Diagnosis of Fetal Craniocerebrum in Second-trimester

目的 探讨中孕期胎儿颅脑超声表现 ,提高产前超声对胎儿颅脑正常结构及畸形的认识。方法 观察 12～ 40周胎儿颅内结构 ,测量双顶径 (BPD) ,侧脑室宽度 (LVW) ,后颅窝池宽度 (CM)及颈部透明层 (NT)或颈项软组织厚度 (NF)。结果 共检出颅脑异常 18例 ,合并其他畸形 9例 ,其中 16～ 2 8周 14例 ,均经出生或引产后证实。结论 中孕期超声是胎儿颅脑结构产前检查的最佳时机。

Objective To explore the ultrasonic imaging features of fetal craniocerebrum, and improve the recognizition on the normal structure and deformity of fetal craniocerebrum. Methods Fetal cranium was measured during 12～40 weeks of gestation, including biaparietal diameter(BPD),lateral ventricular width(LVW),cerebellomedullary cistern(CM), and nuchal translucency(NT) or nuchal fold thickness(NF). Results 18 cases of abnormal craniocerebrum were identified,nine cases of which were accompanied with other abnormalities, and fourteen of which were found during 16～28 weeks of gestation. All cases were proved by subsequent labor or induced labor. Conclusion Second-trimester is the best period of prenatal ultrasound diagnosis of fetal craniocerebrum.