title: Assessment of endometrial volume by three-dimensional ultrasound prior to embryo transfer: clues to endometrial receptivity.
abstract: The aim of the present prospective study was to obtain quantitative data on endometrial volume by three-dimensional (3D) ultrasound at the time of embryo transfer in an in-vitro fertilization programme and to assess its value in predicting endometrial receptivity. The cycles (n = 72) were classified according to endometrial volume: group A <2 ml, group B 2-4 ml, and group C >4 ml. Comparisons of the groups showed that pregnancy and implantation rates were significantly lower (P < 0.05) in the group of patients with an endometrial volume <2 ml. Furthermore, no pregnancy was achieved with an endometrial volume <1 ml. It is concluded that endometrial volume by 3D transvaginal ultrasound may become a new objective parameter by which to predict endometrial receptivity.
authors.affiliation: Center for Obstetrics and Gynecology, Department of Obstetrics and Gynecology, University of Valencia School of Medicine, Valencia,
authors.forename: F
authors.initials: F
authors.lastname: Raga
authors.forename: F
authors.initials: F
authors.lastname: Bonilla-Musoles
authors.forename: E M
authors.initials: EM
authors.lastname: Casañ
authors.forename: O
authors.initials: O
authors.lastname: Klein
authors.forename: F
authors.initials: F
authors.lastname: Bonilla
mesh_terms: D000328:Adult; D010064:Embryo Implantation; D004624:Embryo Transfer; D004717:Endometrium / Q000000981:diagnostic imaging*; D005260:Female; D005307:Fertilization in Vitro; D006801:Humans; D007246:Infertility / Q000628:therapy; D011247:Pregnancy; D011446:Prospective Studies; D014463:Ultrasonography