@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}
}
