1. A method, comprising: receiving historical image data representative of an object examined at a first X-ray dosage during a prior examination of the object; examining the object at a second X-ray dosage to generate first image data representative of the object at a present orientation, wherein the second X-ray dosage is less than the first X-ray dosage; co-registering the historical image data with the first image data to generate second image data representative of the object at the present orientation; identifying a region-of-interest of the object in the second image data; setting an X-ray acquisition parameter based upon the region-of-interest to yield a set X-ray acquisition parameter; and reexamining the object according to the set X-ray acquisition parameter.