Title :
A filtered-backprojection cone-beam algorithm for general orbits with implementation details for the two-orthogonal-circles orbit
Author :
Clack, Rolf ; Defrise, Michel
Author_Institution :
Utah Univ., Salt Lake City, UT, USA
fDate :
31 Oct-6 Nov 1993
Abstract :
A new cone-beam reconstruction algorithm for general orbits is presented. The algorithm is derived from an exact analytical inversion formula and has the form of a shift-variant filtered backprojection (FBP), so that each cone-beam projection can be completely processed as soon as it has been measured. The implementation of the algorithm for a two-orthogonal-circle orbit is discussed, and images reconstructed from simulated data are presented
Keywords :
computerised tomography; image reconstruction; medical image processing; 2-orthogonal-circles orbit; exact analytical inversion formula; filtered-backprojection cone-beam algorithm; general orbits; medical diagnostic imaging; reconstructed images; shift-variant filtered backprojection; simulated data; Algorithm design and analysis; Detectors; Extraterrestrial measurements; Face detection; Filtering algorithms; Image reconstruction; Interpolation; Orbits; Reconstruction algorithms; Transmission line matrix methods;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1993., 1993 IEEE Conference Record.
Conference_Location :
San Francisco, CA
Print_ISBN :
0-7803-1487-5
DOI :
10.1109/NSSMIC.1993.373558
