Equiangular fan-beam computerized tomography reconstruction for a noncircular scanning locus

Authors
Redford, K Wang, G Vannier, MW
Citation
K. Redford et al., Equiangular fan-beam computerized tomography reconstruction for a noncircular scanning locus, OPT ENG, 38(8), 1999, pp. 1335-1339
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Optics & Acoustics
Journal title
OPTICAL ENGINEERING
ISSN journal
00913286 → ACNP
Volume
38
Issue
8
Year of publication
1999
Pages
1335 - 1339
Database
ISI
SICI code
0091-3286(199908)38:8<1335:EFCTRF>2.0.ZU;2-D
Abstract
A derivative-free, two-dimensional equiangular fan-beam reconstruction form ula for a noncircular scanning locus is derived under three practical condi tions. The formula contains the same terms as the traditional formula, exce pt that the constant source-to-origin distance is replaced by the source-to -origin distance as a function of the rotation angle. The correctness of th is formula is tested in numerical simulation. The potential applications of the formula include fourth-generation CT, electron-beam CT, SPECT, and x-r ay microtomography. (C) 1999 Society of Photo-Optical instrumentation Engin eers.