Ultrasound diagnosis of nuchal cord: the gray-scale divot sign.
Department of Obstetrics and Gynecology and Reproductive Sciences, University of Medicine and Dentistry of New Jersey, Robert Wood Johnson Medical School, St. Peter's Medical Center, New Brunswick, USA.
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Ranzini
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Walters
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Vintzileos
D000328:Adult; D003251:Constriction, Pathologic / Q000000981:diagnostic imaging; D005260:Female; D005315:Fetal Diseases / Q000000981:diagnostic imaging*; D005333:Fetus / Q000098:blood supply*; D006801:Humans; D009333:Neck; D011247:Pregnancy; D011263:Pregnancy Trimester, Third; D016216:Ultrasonography, Prenatal / Q000379:methods; D014470:Umbilical Cord / Q000000981:diagnostic imaging*