1. A method for automatically matching medical digital images, comprising: providing a first digitized volume; providing a second digitized volume; selecting a first MPR from the first digitized volume; selecting a second MPR from the second digitized volume; positioning the second MPR adjacent to the first MPR to compare the first and second MPRs; computing a comparison score that represents a correspondence between at least a portion of each of the first and second MPRs; determining whether the comparison score is within a predetermined range; identifying the second MPR as a matching MPR if the comparison score is within the predetermined range; or obtaining a third MPR from the second digitized volume if the comparison score is not within the predetermined range.