Ultrasound is also very operator-dependent. That is, the results of an ultrasound exam reflect the ultrasound technologist or the radiologist's ability to properly manage the equipment. Ultrasound also produces false positive or false negative results from time to time. This means that the ultrasound exam may indicate a breast abnormality when no abnormality is present, or conversely, ultrasound may miss an abnormality. Ultrasound is most valuable when used after mammogram or physical breast exams have indicated an abnormality.
Breast ultrasound uses high-frequency waves to image to the breast.
High-frequency waves are transmitted from a transducer through the breast. Before the exam begins, the patient will be instructed to lie on a special table. The ultrasound technologist will cover the part of the breast that will be imaged with a gel. The gel will lubricate the skin and help with the transmission of the sound waves. The technologist and the patient watch as breast imaging ultrasound is performed.