Waggener R, Lee M, Mickish D, Lange J, Feldmeier J
Radiology Department, University of Texas Health Science Center, San Antonio 78284.
Med Phys. 1989 Mar-Apr;16(2):197-201. doi: 10.1118/1.596371.
A hybrid reconstruction algorithm (HRA) is derived for fan beam geometry for use with systems utilizing a linear array of detectors. The algorithm uses fan beam geometry with a modified parallel beam reconstruction formula. The parallel beam algorithm is used with fan beam geometry by a simple geometric conversion and a different back projection formula. Correction for center of rotation shift is done during the back projection. Computer simulations are shown, both with the center of rotation shift uncorrected and corrected.
