1. A method for use in a computer system associated with a medical imaging device for use in prostate biopsy planning and targeting, comprising: accessing, from an electronic database, a previously stored prostate first image with biopsy information, said biopsy information including biopsy core sample information for previously taken biopsy core samples, said biopsy core sample information including bio; core sample locations and pathological information including locations of any cells of interest along the lengths of said biopsy core samples; obtaining a current second image of a prostate of a patient; registering the first and second images to identify a transformation between the images; incorporating said biopsy information from said first image into said second image to generate a composite image, wherein said transformation is applied to said biopsy information to transform said biopsy information into a frame of reference of said second image; and outputting said composite image to a display device.