title: Ultrasound detection of first trimester malformations: a pictorial essay.
abstract: Knowledge of normal and abnormal anatomy in the first trimester aids in early detection of anomalies and the avoidance of potential pitfalls.
authors.affiliation: Department of Radiology, Beth Israel Deaconess Medical Center, 330 Brookline Avenue, Boston, MA 02215, USA.
authors.forename: Ilse
authors.initials: I
authors.lastname: Castro-Aragon
authors.forename: Deborah
authors.initials: D
authors.lastname: Levine
mesh_terms: D034861:Abdominal Wall / Q000002:abnormalities / Q000000981:diagnostic imaging / Q000196:embryology; D025063:Chromosome Disorders / Q000000981:diagnostic imaging; D000013:Congenital Abnormalities / Q000000981:diagnostic imaging*; D004622:Embryo, Mammalian / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D005260:Female; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging; D006801:Humans; D009421:Nervous System Malformations / Q000000981:diagnostic imaging; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D014428:Twins, Conjoined; D016216:Ultrasonography, Prenatal; D014470:Umbilical Cord / Q000002:abnormalities / Q000000981:diagnostic imaging; D014564:Urogenital Abnormalities / Q000000981:diagnostic imaging