Hybrid reconstruction algorithm for x-ray computed tomography.
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.
Waggener
R
R
Radiology Department, University of Texas Health Science Center, San Antonio 78284.
Lee
M
M
Mickish
D
D
Lange
J
J
Feldmeier
J
J
D000465:Algorithms; D003198:Computer Simulation; D006801:Humans; D007091:Image Processing, Computer-Assisted; D014057:Tomography, X-Ray Computed