Adeyinka A O, Agunloye A M, Idris S
Department of Radiology, University College Hospital Ibadan, Nigeria.
Afr J Med Med Sci. 2005 Dec;34(4):345-8.
The purpose of this study is to evaluate the value and accuracy of ultrasonography in the detection and determination of the gender of the fetus. This prospective study involves the Ultrasound examination of a total of 415 fetuses including 216 (52%) females and 199 (48%) males. The mean gestational age at which the fetuses were scanned was 32 weeks 1 day, with a range of 15 to 40 weeks. Fetal sex identification was only possible in 363 (87.5%) cases. Of these, the fetal sex corroborated birth sex in 314 (75.7%) and disagrees in 49(11.8%) cases. The overall estimated sensitivity of the scan in fetal sex determination is 86.5%, while the estimated specificity for identification of the female sex (90.6%) was higher than that of the male (83.2%). Despite the high efficacy of ultrasound in sex determination obtained in our study, the errors and failure rates should be made known to mothers who are willing to know the gender of their fetuses.
本研究的目的是评估超声检查在检测和确定胎儿性别方面的价值和准确性。这项前瞻性研究对总共415例胎儿进行了超声检查，其中包括216例（52%）女性胎儿和199例（48%）男性胎儿。扫描胎儿时的平均孕周为32周零1天，范围为15至40周。仅在363例（87.5%）病例中能够识别胎儿性别。其中，胎儿性别与出生性别相符的有314例（75.7%），不符的有49例（11.8%）。扫描在确定胎儿性别方面的总体估计敏感性为86.5%，而识别女性性别的估计特异性（90.6%）高于男性（83.2%）。尽管在我们的研究中超声在性别确定方面具有很高的效能，但对于愿意了解胎儿性别的母亲，应告知其存在的误差和失败率。
