A device and methods for performing a simulated CT biopsy on a region of interest on a patient. The device comprises a gantry (22) configured to mount an x-ray emitter (24) and CT detector (26) on opposing sides of the gantry, a motor (28) rotatably coupled to the gantry such that the gantry rotates horizontally about the region of interest, and a rotation of source high resolution x-ray detector (172) positioned adjacent the CT detector in between the CT detector and and detector the x-ray emitter.
