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体外受精-胚胎移植(IVF-ET)技术发展至今,在控制性超促排卵技术、取卵、体外受精、胚胎培养、胚胎移植及配子胚胎冷冻技术等方面取得了很大进展,但是对于胚胎种植环节的认识还有待于进一步提高。大量临床实践表明,未能准确把握子宫内膜种植窗及各种原因导致的子宫内膜容受性降低是胚胎着床失败的重要原因之一。因此,重新认识胚胎种植的关键环节已成为目前国内外生殖医学界研究的热点。子宫内膜种植窗和子宫内膜容受性的评价指标有很多,目前应用较广泛的是各种超声形态学参数、超
In vitro fertilization-embryo transfer (IVF-ET) technology has made great progress in the control of superovulation technology, ovulation, in vitro fertilization, embryo culture, embryo transfer and gamete embryo freezing technology, but for embryo cultivation The understanding of the link needs to be further improved. A large number of clinical practice shows that failure to accurately grasp the endometrial implantation window and a variety of causes of endometrial receptivity is one of the important reasons for the failure of embryo implantation. Therefore, re-understanding of the key aspects of embryo cultivation has become the focus of the study of reproductive medicine at home and abroad. Endometrial implantation window and endometrial receptivity evaluation index there are many, the more widely used is a variety of ultrasound morphological parameters, ultra