Assessment of First Trimester of Pregnancy by Three-dimensional Ultrasound
Pp. 125-137 (13)
Liliam Cristine Rolo, Edward Araujo Junior, Luciano Marcondes Machado Nardozza and Antonio Fernandes Moron
Three-dimensional (3D) sonoembryology allows the analysis of embryonic
surface structures (rendering mode), with enhanced detail, and offers the possibility of
performing a volumetric study of the gestational sac, embryo, yolk sac, amniotic fluid
and placenta during the first trimester of pregnancy. Furthermore, the identification of
abnormalities in these structures can also predict early pregnancy failure and determine
new predictors of pregnancy outcome. Therefore, the main aspects of sonoembryology
and the structure volumes observed during the first trimester of pregnancy using 3DUS
were being decrypted in this chapter.
Amniotic fluid, Embryo, First-trimester, Gestational sac, Placenta,
Sonoembriology, Three-dimensional, Volumetry, Yolk sac.
Department of Obstetrics, Paulista School of Medicine - Federal University of Sao Paulo (EPM-UNIFESP), Rua Napoleao de Barros, 875, Vila Clementino, Sao Paulo - SP, Brazil.