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本文研究目的是了解经阴道二维，彩色血流多普勒在早期妊娠的诊断价值。１４９例人流患者自愿接受本项检查。研究结果表明，经阴道超声（ＴＶＳ）对早期妊娠结构，如孕囊、卵黄囊、胎心搏动，胎头及胎体辨别、颅骨、脊柱、心脏等均较经腹部超声（ＴＡＳ），提前１～２周显示，且结构更清晰。经阴道彩色多普勒（ＴＶＣＤ）在早期妊娠全部病例均可测到双侧子宫动脉血流，９７％测到滋养层血流，７８％可测到妊娠黄体血流，５周以后９２％可测到胎儿主动脉血流，７周以后８８％可测到脐动脉血流，９周以后可测到脑动脉血流。
The purpose of this study is to understand the diagnostic value of transvaginal two-dimensional, color flow Doppler in early pregnancy. 149 cases of abortions voluntarily accepted this examination. The results showed that transvaginal ultrasound (TVS) was superior to abdominal ultrasound (TAS) in gestational sacs such as gestational sac, yolk sac, fetal heart beat, fetal head and carcass identification, skull, spine and heart, ~ 2 weeks show, and the structure more clearly. Transvaginal color Doppler (TVCD) in all cases of early pregnancy can be measured bilateral uterine artery blood flow, 97% measured trophoblast blood flow, 78% measurable pregnancy luteal flow, 92% after 5 weeks Measured fetal aortic blood flow, 88% after 7 weeks can be measured umbilical artery blood flow, cerebral blood flow can be measured after 9 weeks.