Pregnancy ultrasound is the use of ultrasonography in pregnancy, where sound waves are used to create real-time visual images of the developing embryo/fetus in the mother's uterus/womb.

• Check for multiple fetuses
• Assess possible risks to the mother (e.g. miscarriage, ectopic pregnancy, or molar pregnancy)
• Check for fetal malformation (e.g. spina bifida, cleft palate, clenched fists)
• Monitor development of the fetus, and determine if IUGR exists
• Note the development of fetal body parts (e.g. heart, brain, liver, stomach, skull, other bones)
• Check the amniotic fluid and umbilical cord for possible problems
• Determine due date (based on measurements and relative developmental progress)
• Dx pregnancy (uncommon)

• Standard part of prenatal care in many countries
• Routine obstetric U/S before 24 weeks gestation can significantly reduce the risk of failing to recognize multiple gestations, and improve pregnancy dating to reduce the risk of IOL for post-dates pregnancy

• Fetal Doppler
• Antenatal care
• Nuchal scan
• AFI (component of pregnancy U/S)
• Early morphology
• Late morphology