Initial experience of breast tumour enhancement in ultrasound after injection of contrast media - Vraka, I; Koureas, A.; Panourgias, E.; Dellaportas, D; Psychogios, I; Dalakidis, A; Galanis, P; Gouliamos, A.; Antoniou, A. (European Congress of Radiology-ECR 2013, 2013)