Patent ID: 8553963

Claim:
A motion compensated digitally subtracted Angiography (DSA) image processing system, comprising: an interface for acquiring a sequence of images of patient vessels both prior to and following introduction of contrast agent into the vessels; and an image data processor for automatically, (a) determining a first shift vector, for a first image of said sequence for compensating for shift between said first image and a first reference image of said sequence, (b) applying the determined first shift vector to said first image of said sequence to produce a shifted image, (c) subtracting said first reference image from said shifted image to produce a subtracted image enhancing vessel structure, (d) determining a second shift vector for compensating for shift between said subtracted image and a second reference image and (e) shifting content of said subtracted image relative to said second reference image in response to said second shift vector, to provide a shifted subtracted image enhancing and aligning vessel structure.