TTR algorithm for the inversion of the exponential X-ray transform [SPECT application]

Author

Wagner, J.-M. ; Noo, E.

Author_Institution

Liege Univ., Belgium

Volume

2

fYear

2000

fDate

2000

Abstract

Presents an FBP algorithm suitable for image reconstruction from exponential X-ray projections sampled on any subset of the sphere that includes great circles. This algorithm is similar to the TTR-algorithm of Ra et al. (1982) for non-attenuated projections. It is derived by combining all reconstructions that can be obtained from the subsets of measurements corresponding to a great circle. The authors´ results generalize those published by I. Hazou (1988) and Weng et al. (1996) for reconstruction from projections sampled on the unit sphere. However, they remain modest as they only apply to specific sets of measurements

Keywords

image reconstruction; medical image processing; single photon emission computed tomography; transforms; SPECT; TTR algorithm; exponential X-ray transform; great circles; measurement subsets; medical diagnostic imaging; nuclear medicine; Attenuation; Biomedical applications of radiation; Collimators; Geometry; Image reconstruction; Intensity modulation; Optical imaging; Reconstruction algorithms; Three dimensional displays; X-ray imaging;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium Conference Record, 2000 IEEE

Conference_Location

Lyon

ISSN

1082-3654

Print_ISBN

0-7803-6503-8

Type

conf

DOI

10.1109/NSSMIC.2000.950095

Filename

950095