子宫内膜容受性的超声评估方法研究进展

Recent study progress of endometrial receptivity by ultrasound

许多因素影响体外受精．胚胎移植OVF-ET）结局，重要因素在于胚胎质量和子宫内膜容受性。子宫内膜容受性的评价指标有很多。简便、可重复、无创伤的经阴道超声为评估子宫内膜容受性提供可能，目前比较公认的观点是子宫内膜厚度〈8mm时，子宫内膜容受性明显下降，且不存在子宫内膜厚度上限值，子宫内膜容积〈2．0-2．5ml阴性预测价值较强，子宫内膜血流灌注可在一定程度上预测子宫内膜容受性，但现有的研究结果尚不能得到一个合适的评价标准，有待于不断地探索总结。

Many factors influence the results of in vitro fertilization-embryo transfer （IVF-ET）, while the significant factors are embryo quality and endometrial receptivity. There are many evaluation indexes for en- dometrial receptivity. Transvaginal ultrasound examination is easy, repeatable and non-invasive, which can evaluate endometrial receptivity. It has been shown that the endometrium thickness 〈8 mm can＇t achieve a good endometrial receptivity. There is no threshold for endometrial thickness which a pregnancy is unlikely to occur. The use of minimal endometrial volume 2.0 ml to 2.5 ml mainly lies in the high negative predictive value. A good blood supply towards the endometrium is usually considered as an essential requirement for good endometrial receptivity. The existing researches still can＇t get a good evaluation standard, which need further studies.