能量多普勒超声在人体鱼序列综合征产前诊断中的应用研究

Diagnostic Value of Power Doppler Ultrasonography for Sirenomelia Seguence in Prenatal

目的探讨人体鱼序列综合征胎儿的产前腹主动脉能量多普勒超声表现及应用价值。方法应用能量多普勒对2例人体鱼序列综合征胎儿和10例正常胎儿行腹主动脉二维能量多普勒超声检查及三维能量多普勒超声重建。结果二维能量多普勒超声检查及三维能量多普勒超声重建显示:正常胎儿腹主动脉在肾水平分出双侧肾动脉,在盆腔分为左、右髂总动脉;人体鱼序列综合征胎儿腹主动脉及其分支具有如下特点:①起自高位腹主动脉的粗大畸形血管,追查畸形血管,发现其充当脐动脉;②无肾动脉分支;③无髂总动脉分支;④腹主动脉在分出畸形血管后变细小。结论人体鱼序列综合征胎儿的腹主动脉有特征性的能量多普勒超声改变,应用二维能量多普勒超声及三维能量多普勒超声有助于产前诊断人体鱼序列综合征。

Objective To study and discuss the diagnostic value and ultrasonographic characteristics of power doppler ultrasound in the prenatal diagnosis of Sirenomelia Seguence.Methods The abdominal aorta in two fetuses with sirenomelia seguence fetuses and in ten with nomal was reviewed and compared with two-dimensional power doppler ultrasound and three-dimensional power doppler ultrasound in prenatal.Results The abdominal aorta were showed to divid into renal atteries in the kidney level while two common iliac arteries in the pelvis in nomal fetuses with two-dimensional power doppler ultrasound and three-dimensional power doppler ultrasound;compared with the nomal,the abdominal aorta and whose branches in sirenomelia seguence were demonstrated as follows： ① a large and deformed vascular coming from the high abdominal aorta,which was found to act as a umbilical artery by careful examination;② no bifurcation of renal arteries identified;③ no bifurcation of two common iliac arteries identified;④ the abdominal aorta changing into a narrow vascular after one deformed vascular separating from.Conclusions Sirenomelia seguence fetuses has a characteristic change in two-dimensional power doppler ultrasound and three-dimensional power doppler ultrasound,which is helpful to improve the prenatal diagnosis of sirenomelia seguence.