Objective To investigate the significance of signal characteristics from transvaginal color Doppler flow imaging in differential diagnosis of un-ruptured ectopic pregnancy. Methods For each of the 39 patients preliminarily diagnosed with un-ruptured ectopic pregnancy, transvaginal ultrasonography was routinely performed to observe signal characteristics of 2D imaging, color Doppler and spectral Doppler flow imaging, which were ultimately verified during operation or by dynamic monitoring of serum β-hCG and follow-up visit. Results Among the 39 patients, 29 (74. 4% ) were diagnosed with un-ruptured ectopic pregnancy, all of whom had semi-annular flow signals around the gestational sacs. Ten ( 25. 6% ) were diagnosed with corpus luteum of pregnancy, 8 of whom had semi-annular flow signals around the gestational sacs. In spectral Doppler imaging, no significant difference in peak velocity was indicated between two groups, but the flow resistance index obtained in ectopic pregnancy group was obviously lower than that in corpus luteum group ( t = 5.45, P <0.05 ). Conclusion Semi-annular flow signal is the characteristic signal of un-ruptured ectopic pregnancy, which is also found in some patients with corpus luteum of pregnancy. For more reliable information of imaging required for clinical diagnosis, comprehensive analysis should be conducted by utilizing signal characteristics in ultrasonogram as well as various flow parameters.%目的 探讨经阴道彩色多普勒血流显像特征对未破型异位妊娠的鉴别诊断价值.方法 对临床拟诊为未破型异位妊娠的患者39例行经阴道超声检查,观察二维及彩色多普勒、频谱多普勒血流信号特点,最终结果经手术或动态监测血清β-人绒毛膜促性腺激素及随访证实.结果 39例患者中29例(74.4%)为未破型异位妊娠,10例(25.6%)为妊娠黄体.29例未破型异位妊娠囊周边均可显示半环状血流信号,10例妊娠黄体中8例周边可见半环状血流信号,两组血流频谱峰值流速无显著性差异,异位妊娠组血流阻力指数低于妊娠黄体组(t=5.45,P＜0.05).结论 半环状血流信号是未破型异位妊娠的特征性血流信号,但部分妊娠黄体也具有此特征,应结合声像图特征及血流参数综合分析,为临床诊断提供更加可靠的影像学信息.
展开▼
