title: Sonographic evaluation for ectopic pregnancy: transabdominal scanning of patients with nondistended urinary bladders as a complement to transvaginal sonography.
authors.affiliation: Department of Radiology, Duke University Medical Center, Durham, NC 27710, USA.
authors.forename: B S
authors.initials: BS
authors.lastname: Hertzberg
authors.forename: M A
authors.initials: MA
authors.lastname: Kliewer
authors.forename: J D
authors.initials: JD
authors.lastname: Bowie
mesh_terms: D000328:Adult; D018997:Chorionic Gonadotropin, beta Subunit, Human / Q000097:blood; D005260:Female; D006801:Humans; D011247:Pregnancy; D011271:Pregnancy, Ectopic / Q000000981:diagnostic imaging*; D016216:Ultrasonography, Prenatal / Q000379:methods; D001743:Urinary Bladder / Q000000981:diagnostic imaging
chemical_list: D018997:Chorionic Gonadotropin, beta Subunit, Human