Ultrasound is a simple non invasive examination, using an ultrasound beam to create an image by moving a probe on the skin surface. The Doppler technique allows for a more specific examination of blood vessels.

Ultrasound is used for abdominal and pelvic exploration, more specifically for the liver, kidneys, aorta, pancreas, gall bladder, uterus and ovaries. It is the preferred examination to monitor pregnancies. Ultrasound tests are also used to assess muscles, tendons, and other periarticular structures. It is also used, in combination with the Doppler technology, to perform cardiac examination.

Doppler exam evaluates blood flow; it can detect narrowing and occlusions of blood vessels. It is used for the carotid and vertebral arteries, the intracranial vessels, and the arteries and veins of the abdomen and extremities.