title: First-trimester obstetric emergencies: spectrum of sonographic findings.
authors.affiliation: Russell H. Morgan, Department of Radiology and Radiological Science, The Johns Hopkins University, School of Medicine, 600 North Wolfe Street, Baltimore, Maryland 21287, USA.
authors.forename: Ferah
authors.initials: F
authors.lastname: Albayram
authors.forename: Ulrike M
authors.initials: UM
authors.lastname: Hamper
mesh_terms: D000022:Abortion, Spontaneous / Q000000981:diagnostic imaging; D004630:Emergencies; D005260:Female; D006801:Humans; D011247:Pregnancy; D011248:Pregnancy Complications / Q000000981:diagnostic imaging*; D011261:Pregnancy Trimester, First; D011271:Pregnancy, Ectopic / Q000000981:diagnostic imaging; D012680:Sensitivity and Specificity; D018245:Trophoblastic Tumor, Placental Site / Q000000981:diagnostic imaging; D016216:Ultrasonography, Prenatal; D014592:Uterine Hemorrhage / Q000000981:diagnostic imaging