title: ACOG releases report on gynecologic ultrasonography.
mesh_terms: D005260:Female; D005865:Gestational Age; D006176:Gynecology; D006801:Humans; D009774:Obstetrics; D010388:Pelvis / Q000000981:diagnostic imaging*; D017410:Practice Guidelines as Topic; D011247:Pregnancy; D012955:Societies, Medical; D014463:Ultrasonography / Q000379:methods; D016216:Ultrasonography, Prenatal; D014481:United States