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胎盘是妊娠母体与胎儿间进行物质交换的重要器官,正常胎盘随妊娠进展而体积增加,由于超声测定胎盘体积方法复查,胎盘厚度(placebtak Thickness,PT)易于测量,应用较多,近年国外已有人应用三维超声进行胎盘容积测量,国内有关胎盘研究仍着重于胎盘功能、血流等.本文应用二维超声对2458例正常妊娠15～42周测量胎盘厚度、双顶径(BPD),以探讨胎盘与孕龄(Cestational age,GA)、胎儿生长发育的关系.1 资料与方法1.1 资料来源:收集我院1995年1月～1997年12月门诊及住院的2458例单胎、无妊娠合并症及并发症,月经周期正常的妊娠妇女,年龄18～40岁,孕龄15～42周,每一孕周为一组.1.2 方法:采用日本SSD-500Aloka实时超声诊断仪,频率3.5MHZ,胎盘厚度及双顶径由专人操作测
The placenta is an important organ for the exchange of material between the pregnant mother and the fetus. The volume of the normal placenta increases with the progress of pregnancy. Due to the review of the placental volume by ultrasound, the thickness of the placenta (PT) can be easily measured and applied. In recent years, Placenta volume measurement using three-dimensional ultrasound, the placenta research is still focused on placental function, blood flow, etc .. In this paper, two-dimensional ultrasound 2458 cases of normal pregnancy 15 to 42 weeks to measure the thickness of the placenta, biparietal diameter (BPD) to explore the placenta And gestational age (Cestational age, GA), fetal growth and development.1 Materials and Methods 1.1 Source: collected in our hospital from January 1995 to December 1997 outpatient and hospitalized 2458 cases of single-child pregnancy-free complications and Complications, normal menstrual cycle pregnant women, aged 18 to 40 years, gestational age 15 to 42 weeks, each gestational week as a group.1.2 Methods: Japan SSD-500Aloka real-time ultrasound diagnostic apparatus, frequency 3.5MHZ, placental thickness And biparietal diameter measured by hand operation