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Updated: Aug 9, 2026
Murine Fetal Echocardiography
Published on: February 15, 2013
First trimester anatomy scan: pushing the limits. What can we see now?
Ana Monteagudo1, Ilan E Timor-Tritsch
1Department of Obstetrics and Gynecology, New York University School of Medicine, New York, New York, USA. Ana.Monteagudo@med.nyu.edu
Purpose Of Review:
The aim of this review article is to familiarize the reader with the current developments dealing with ultrasound during the first trimester of pregnancy.
Recent Findings:
The main emphasis of this article is to review the anatomy seen during the first trimester and to bring to the reader the fact that the first anatomical survey of the fetus does not have to wait until the 18th to 20th week of gestation. The fetus can be surveyed adequately as early as the 12th week of gestation and ideally between the 13th and 14th weeks. Of course, not all malformations will be detected during the first trimester, and a follow-up scan between 20 and 23 weeks is indicated.
Summary:
The ongoing improvements in ultrasound technology allow us to see more details of the embryo or fetus at earlier gestational ages than ever before. This is resulting in a rethinking of when the first anatomical survey should be performed.
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