1. A method for imaging an object with a medical imaging system comprising an x-ray radiation source, a detector facing the x-ray radiation source, an object support and a compression paddle, wherein the compression paddle is smaller than the detector, the method comprising: offsetting the compression paddle to a position towards a side edge of the detector; moving the x-ray radiation source along a trajectory dependent upon the position of the compression paddle between a first position aligned with a first side edge of the compression paddle and a second position aligned with a second opposing side edge of the compression paddle; and acquiring images of the object at several positions along the trajectory.