Meagher S, Davison G
Medical Ultrasound Imaging, Mulgrave, Victoria, Australia.
Ultrasound Obstet Gynecol. 1996 Nov;8(5):322-4. doi: 10.1046/j.1469-0705.1996.08050322.x.
Ultrasound identification assists in determining chorionicity in twins, in the interpretation of sex chromosome mosaicism and aneuploidy and in sex-linked conditions presenting after 14 weeks. This study addresses the frequency and accuracy of gender identification in a series of consecutive patients presenting for amniocentesis for genetic indications. Amniocentesis was performed at 14-20 weeks in 843 fetuses over a 5-year period. Ultrasound prediction of fetal gender was documented in 93.3% (770/843). The overall accuracy of diagnosis of fetal gender was 99.3% (765/770). Errors in diagnosis of gender were more likely to occur in the assessment of the female fetus. Such errors in diagnosis may be minimized by combining both tangential/transverse and sagittal views of the fetal perineum.
超声识别有助于确定双胎妊娠的绒毛膜性、解读性染色体嵌合体和非整倍体情况，以及解读14周后出现的性连锁疾病。本研究探讨了一系列因遗传指征前来进行羊膜腔穿刺术的连续患者中胎儿性别识别的频率和准确性。在5年期间，对843例孕14 - 20周的胎儿进行了羊膜腔穿刺术。93.3%（770/843）的胎儿有超声预测胎儿性别的记录。胎儿性别诊断的总体准确率为99.3%（765/770）。女性胎儿评估中更易出现性别诊断错误。通过结合胎儿会阴部的切线/横向和矢状面视图，可将此类诊断错误降至最低。
