title: Confirming the atrial septal "spinnaker" sign.
authors.forename: D M
authors.initials: DM
authors.lastname: Sherer
authors.forename: T A
authors.initials: TA
authors.lastname: Allen
authors.forename: J S
authors.initials: JS
authors.lastname: Abramowicz
mesh_terms: D005260:Female; D005318:Fetal Heart / Q000000981:diagnostic imaging*; D005865:Gestational Age; D006325:Heart Atria / Q000000981:diagnostic imaging*; D006346:Heart Septum / Q000000981:diagnostic imaging*; D006801:Humans; D011247:Pregnancy; D016216:Ultrasonography, Prenatal