Ultrasound may be a treatment option for women with engorgement or blocked milk ducts and its suitability will be decided by the doctor. A physical therapist will carry out the treatment. It may be done just once to resolve the issue or may need to be repeated a few times to be most effective.
The difference between therapeutic ultrasound and warm compresses is that the compresses may not penetrate deep enough under the skin to truly affect the milk ducts. Ultrasound can reach 2 to 5 centimeters under the skin where warm compresses may only reach about 1 centimeter.