Doppler flows in the trophoderm or weird flows which were found on CDFI could be a complementary of 2-D TVS . The diagnostic accuracy of combining 2-D TVS and CDFI for EP was up to 97 % .

彩色多普勒血流 成像 （CDFI）所 记录 的 滋养层 血流 频谱或怪异 频谱是二维TVS的补充，二者结合诊断EP的准确性高达97%。