Ultrasound imaging of the breast uses sound waves to produce pictures of the internal structures of the breast. It is primarily used to help diagnose breast lumps or other abnormalities your doctor doppler with ultra sound breast have found during a physical exam, mammogram or breast MRI. Ultrasound is safe, noninvasive and does not use radiation. Leave jewelry at home and wear loose, comfortable clothing. You will be asked to undress from the waist up and to wear a gown during the procedure. Ultrasound is safe and painless, and produces pictures of the inside of the body using sound waves.