(We contacted Baby Doppler, maker of Sonoline B, and Neeva, and did not hear back in time for publication.) What Is a Fetal Doppler? Fetal dopplers are a type of ultrasound machine that uses sound ...

You'll get a second ultrasound (fetal Doppler test) around week 20 to check that your baby's heart is beating normally, among other things. If your pregnancy is proceeding without complications ...

Doppler velocimetry uses ultrasound to check blood flow in the umbilical cord or between the uterus and the placenta. If the blood supply is restricted, your baby can't get enough nutrients and ...

We'll tell you all about the 6-week ultrasound, including why your doctor may have ordered it, what the risks are, and what it means if no heartbeat is detected.