Femoral popliteal bypass surgery is used to treat blocked femoral artery. The femoral artery is the largest artery in the thigh. It supplies oxygen-rich blood to the leg. Blockage is due to plaque buildup or atherosclerosis. Atherosclerosis in the leg arteries causes peripheral vascular disease. The same process causes heart disease and stroke.

Fetal heart rate monitoring measures the heart rate and rhythm of your baby (fetus). This lets your healthcare provider see how your baby is doing.

Fetal ultrasound is a test used during pregnancy to create an image of the baby in the mother's womb (uterus).

Fluoroscopy is a type of imaging tool. It looks at moving body structures. It’s much like an X-ray "movie."