@inproceedings {gtissonpscheunddvandyck2004, title = {ROI Cone-Beam CT on a Circular Orbit for Geometric Magnification Using Reprojection}, booktitle = {Proc. IEEE Medical Imaging Conference, Rome, 16-22 october}, year = {2004}, author = {G. Tisson and Paul Scheunders and Dirk Van Dyck} }