By 8 weeks gestation, your baby can usually be seen with transabdominal ultrasound. This information is vital for timing of appropriate obstetric care; scheduling and interpretation of certain antepartum tests; determining the appropriateness of fetal growth; and designing interventions to prevent preterm births, postterm births, and related morbidities. Assess the uterus and ovaries. Int J Gynaecol Obstet ; Baby during first trimester in 4D. Gestational age in pregnancies conceived after in vitro fertilization: Determining the number of babies present.
Last menstrual period versus ultrasound for pregnancy dating.
First Trimester / Dating Ultrasound