title: Subendometrial contractions in the nonpregnant uterus: an ultrasound study.
abstract: Endometrial wavelike activity was studied by ultrasound, throughout 19 ovulatory cycles in 16 healthy female volunteers. Analysis was focused on the presence of endometrial activity and the wave types. Five activity patterns were distinguished, which varied throughout the cycle. Endometrial activity was most striking during the periovulatory phase.
authors.affiliation: Department of Obstetrics and Gynaecology, Academisch Ziekenhuis Maastricht, Netherlands.
authors.forename: M M
authors.initials: MM
authors.lastname: IJland
authors.forename: J L
authors.initials: JL
authors.lastname: Evers
authors.forename: G A
authors.initials: GA
authors.lastname: Dunselman
authors.forename: H J
authors.initials: HJ
authors.lastname: Hoogland
mesh_terms: D000328:Adult; D004717:Endometrium / Q000000981:diagnostic imaging* / Q000502:physiology*; D005260:Female; D005498:Follicular Phase / Q000502:physiology; D006801:Humans; D008183:Luteal Phase / Q000502:physiology; D008597:Menstrual Cycle / Q000502:physiology; D010060:Ovulation / Q000502:physiology; D014463:Ultrasonography; D014590:Uterine Contraction