Pregnancy

Doctors look for a gestational sac (the first sign of pregnancy) and a yolk sac (which provides nutrients until the placenta forms).

A specialized scan used later in pregnancy (often the 3rd trimester) to check blood flow in maternal and fetal vessels. pregnancy

Reports are also used for administrative and diagnostic purposes beyond routine ultrasounds: Doctors look for a gestational sac (the first

The fetal pole (early embryo) becomes visible, and a heartbeat is typically detected. pregnancy

The estimated age of the pregnancy, calculated from the first day of your last menstrual period (LMP).