title: Double trouble: the importance of reporting chorionicity and amnionicity in twin pregnancy ultrasound reports.
abstract: An obstetric ultrasound report in a twin pregnancy that does not unambiguously determine chorionicity and amnionicity in the first trimester is substandard. This article will assist radiologists to understand the importance of reporting the chorionicity and amnionicity in all twin obstetric scans.
authors.affiliation: Department of Perinatal Imaging, Women's and Children's Hospital, North Adelaide, South Australia, Australia.
authors.forename: Sarah
authors.initials: S
authors.lastname: Constantine
authors.forename: Chris
authors.initials: C
authors.lastname: Wilkinson
mesh_terms: D000650:Amnion / Q000000981:diagnostic imaging*; D002823:Chorion / Q000000981:diagnostic imaging*; D004282:Documentation / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D059285:Pregnancy, Twin; D016216:Ultrasonography, Prenatal
keywords: obstetric ultrasound; obstetrics