1. A method for performing a medical imaging study by a computer system comprising: acquiring from a scanner, a preliminary scan of a patient; automatically detecting, by processor, a set of local feature candidates from the preliminary scan; assessing, by the processor, the accuracy of each local feature candidate using multiple combinations of the other local feature candidates and removing a local feature candidate that is assessed to have the lowest accuracy; repeating, by the processor, the assessing and removing step until only a predetermined number of local feature candidates remain; locating, by the processor, and outputting by a display a region of interest (ROI) from within the preliminary scan based on the remaining predetermined number of local feature candidates; and performing a medical imaging study based on the location of the ROI within the preliminary scan.