• To identify site(s) of pregnancy, e.g. intrauterine, interstitial or ectopic
• To detect early pregnancy failure
• To predict outcome in the presence of a live embryo
• To assess gestational age
• To determine the number of embryos and assess horionicity and amnionicity
• To diagnose gestational trophoblastic disease
• To diagnose fetal anomalies
The diagnosis of fetal anomalies is limited by the resolution of ultrasound but gross anomalies such as cystic hygromas and large cranial cysts are detected
• To assess associated maternal abnormalities, e.g. ovarian cysts, uterine leiomyomas.
