Metal artifact reduction algorithm for single energy and dual energy CT scans

We suggest an algorithm for metal artifact reduction (MAR) for both single energy and dual energy CT scans. The algorithm is based on a prevailing approach in CT metal artifact reduction. Measurements with a metal object are considered corrupted and completely unusable. The measurements are replaced by forward reprojection from a prior image. In this work we consider application to single energy and dual energy data. Both single energy and dual energy methods share a common MAR technique. Our method is applied to various metal implants and patients, and good metal artifact reduction is observed.