Kozinszky Zoltan, Surányi Andrea, Péics Hajnalka, Molnár András, Pál Attila
Reproductive Medicine, Department of Obstetrics and Gynecology, Huddinge Karolinska University Hospital, Stockholm, Sweden.
Department of Obstetrics and Gynecology, University of Szeged, Szeged, Hungary.
Ultrasound Med Biol. 2015 Aug;41(8):2252-8. doi: 10.1016/j.ultrasmedbio.2015.04.005. Epub 2015 May 7.
The aim of this study was to determine the utility of a new mathematical model in volumetric assessment of the placenta using 2-D ultrasound. Placental volumetry was performed in a prospective cross-sectional survey by virtual organ computer-aided analysis (VOCAL) with the help of a shell-off method in 346 uncomplicated pregnancies according to STROBE (Strengthening the Reporting of Observational Studies in Epidemiology) guidelines. Furthermore, placental thickness, length and height were measured with the 2-D technique to estimate placental volume based on the mathematical formula for the volume of "the shell of the spherical sector." Fetal size was also assessed by 2-D sonography. The placental volumes measured by 2-D and 3-D techniques had a correlation of 0.86. In the first trimester, the correlation was 0.82, and later during pregnancy, it was 0.86. Placental volumetry using "the circle-shaped shell of the spherical sector" mathematical model with 2-D ultrasound technique may be introduced into everyday practice to screen for placental volume deviations associated with adverse pregnancy outcome.
本研究的目的是确定一种新的数学模型在利用二维超声对胎盘进行容积评估中的效用。根据STROBE（加强流行病学观察性研究报告）指南，在一项前瞻性横断面调查中，借助脱壳法通过虚拟器官计算机辅助分析（VOCAL）对346例无并发症妊娠进行胎盘容积测量。此外，采用二维技术测量胎盘厚度、长度和高度，根据“球形扇形壳”体积的数学公式估算胎盘体积。胎儿大小也通过二维超声检查进行评估。二维和三维技术测量的胎盘体积相关性为0.86。在孕早期，相关性为0.82，在妊娠后期，相关性为0.86。使用二维超声技术结合“球形扇形圆形壳”数学模型进行胎盘容积测量，可引入日常实践中，以筛查与不良妊娠结局相关的胎盘体积偏差。
