The breast-mimicking phantom for simulation and its simulated tomosynthesis images. (a) The 3D breast-mimicking phantom for the simulation. (b) The high intensity feature patterns located in the middle of the 3D breast-mimicking phantom. (c) The simulated local tomosynthesis image obtained with the proposed method. (d) The simulated conventional tomosynthesis image. The numbers are the places where CNRs are to be evaluated.