Ultrasound is performed by a registered technologist who has had additional training in
The technologist holds a small, hand-held instrument covered with gel against the breast, sending high frequency sound waves into the breast. The pattern of echoes from these sound waves is converted into an image of the breasts interior.
Ultrasound is used for additional evaluation of the breast, evaluation of dense breasts in young women, and localization of tumors for the removal of tissue samples.
Ultrasound can distinguish between tumors that are solid and cysts that are filled with fluid, and aid the radiologist in the evaluation of lumps that can be felt but are hard to see on a mammogram.