Ultrasound plays an important role in the phased plan of the internationally recognised S3 guidelines for examination and aftertreatment of the female breast. Ultrasound is indispensable, both in diagnosing unclear findings on palpation and in further diagnosis of mammographical findings which are unclear.
In contrast to mammography, ultrasound is a diagnostic method which entails no exposure to radiation.
The limitation of ultrasound is the lack of accuracy in recording the smallest calcifications (microcalcifications) which occur in the early stages of individual tumours.
The strength of ultrasound lies in the further diagnosis of small nodes in the breast (as are often seen in mammography).