AffiliationRoyal College of Surgeons in Ireland, Rotunda Hospital, Parnell Square, Dublin, Ireland. email@example.com
Pregnancy Trimester, First
MetadataShow full item record
CitationEarly fetal anatomical sonography. 2012, 26 (5):561-73 Best Pract Res Clin Obstet Gynaecol
JournalBest practice & research. Clinical obstetrics & gynaecology
AbstractOver the past decade, prenatal screening and diagnosis has moved from the second into the first trimester, with aneuploidy screening becoming both feasible and effective. With vast improvements in ultrasound technology, sonologists can now image the fetus in greater detail at all gestational ages. In the hands of experienced sonographers, anatomic surveys between 11 and 14 weeks can be carried out with good visualisation rates of many structures. It is important to be familiar with the normal development of the embryo and fetus, and to be aware of the major anatomical landmarks whose absence or presence may be deemed normal or abnormal depending on the gestational age. Some structural abnormalities will nearly always be detected, some will never be and some are potentially detectable depending on a number of factors.
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