The area on the color bar that separates the main colors and represents areas without doppler shift is

Oxygenated blood enters the fetal circulation from the placenta through the ____________.

What does the waveform labeled 1 indicate?

What measurement is displayed by this image? BPD measurement (2).png   

Choose the maternal indication for performance of a fetal Doppler exam.

A fetal heart with a large RA, small RV, apically displaced TV, hydrops, arrhythmia, and abnormal right ventricular contraction raises suspicion for which heart defect?

On a four chamber view of the heart the sonographer notices a hole between the ventricles this is called

Where should the umbilical artery be sampled?  (multiple answers)

The pulmonary valve receives blood from the:

What structure is within the circle? (middle of the heart view)