Utilisation pratique et intérêt de la tomosynthèse

Digital breast tomosynthesis is a currently assessed 3D imaging technique, used in complement with conventional mammography 2D. This technique facilitates detection of abnomalies by avoiding the overlap of breast tissues and negates convergence phenomena due to the superposition of normal breast tissue. Studies have shown its benefit associated with 2D mammography for screening as well as for the diagnosis by reducing the recall rate. Tomosynthesis increases the sensitivity of 2D mammography about 9%, including subtle image (masses, architectural distortions). Currently, tomosynthesis is performed on cranio-caudal or oblique, this depends on team. Regarding the delivered dose, studies have shown that only with 2D reconstruction tomosynthesis from 3D pictures have an equivalent performance to tomosynthesis associated with 2D mammography, thus reducing irradiation.