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Obstetrics & Gynecology 1978;51:170-172
© 1978 by The American College of Obstetricians and Gynecologists
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Rapid B-Scan (Real-Time) Ultrasonography in the Identification and Evaluation of Twin Pregnancies

SANDRA C. LEVINE, MD, FACOG and ROY A. FILLY, MD

From the Cardiovascular Research Institute and the Departments of Obstetrics and Gynecology and Radiology at the University of California at San Francisco, San Francisco, California.

Abstract

Real-time ultrasonography utilizing a hand-held linear array transducer provides a highly accurate method of identifying and evaluating the twin gestation. The rapidity of real-time scanning eliminates interpretational problems caused by fetal movements. Additionally, the versatility of transducer positioning facilitates recognition of appropriate fetal planes for assessment of viability and growth. A prospective study of 595 consecutive pregnancies yielded no misdiagnoses of the number of fetuses present and only one false positive diagnosis of fetal viability.






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