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Sonographic Signs of Fetal Neural Tube and Central Nervous System Defects

Philips Ultrasound, Global Education, 1933 169th Pl SE, Bothell, WA 98012.wabearpaw{at}yahoo.com

Sonography may provide prenatal diagnosis of neural tube defects and has become a routine part of prenatal care. Neural tube defects include malformations of the brain and spine. Among congenital anomalies, neural tube defects are second in incidence following cardiac defects. Laboratory tests combined with sonography are often able to diagnose the failure of the neural tube to fuse. Specific sonographic signs provide direct or indirect evidence of a neural tube defect.

Key Words: neural tube • central nervous system • embryology • anencephaly • encephalocele • spina bifida • prenatal laboratory values • microcephaly • Arnold-Chiari • hydrocephalus • holoprosencephaly • folic acid

Journal of Diagnostic Medical Sonography, Vol. 19, No. 6, 347-357 (2003)
DOI: 10.1177/8756479303258938


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