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Ultrasound demonstration of the normal fetal yolk sac
Author(s) -
Sauerbrei Eric,
Cooperberg Peter L.,
Poland Betty J.
Publication year - 1980
Publication title -
journal of clinical ultrasound
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.272
H-Index - 61
eISSN - 1097-0096
pISSN - 0091-2751
DOI - 10.1002/jcu.1870080306
Subject(s) - yolk sac , medicine , fetus , ultrasound , gestational sac , amniotic sac , obstetrics , crown rump length , second trimester , amniotic fluid , pregnancy , first trimester , radiology , embryo , biology , genetics , microbiology and biotechnology
Abstract Using high‐resolution real‐time ultrasound in the first trimester of pregnancy, we have been able to demonstrate, in addition to the fetus, the yolk sac and the amniotic membrane. Pitfalls to avoid in first‐trimester pregnancies include (a) mistaking the yolk sac for a second separate fetus, (b) including the yolk sac in the crown–rump length, and (c) misinterpreting the amniotic membrane for a septum between two separate gestational sacs.