Title :
Image reconstruction for discontinuous objects with half-data knowledge in SPECT with nonuniform attenuation
Author :
Sidky, Emil Y. ; Pan, Xiaochuan
Author_Institution :
Dept. of Radiol., Chicago Univ., IL, USA
Abstract :
The potato peeler perspective provides a way to identify redundant information in the SPECT data function. Its mathematical formulation in terms of "variable" sinograms demonstrates mathematically data redundancy in the SPECT data function even when the attenuation map is nonuniform. In this work, we extend the mathematical result to include the case when the activity distribution has a finite number of jump discontinuities.
Keywords :
data analysis; functional analysis; image reconstruction; redundancy; single photon emission computed tomography; SPECT data function; activity distribution; attenuation map; discontinuous objects; half-data knowledge; image reconstruction; jump discontinuities; mathematical formulation; nonuniform attenuation; potato peeler perspective; redundant information; variable sinograms; Attenuation; Computed tomography; Differential equations; Image reconstruction; Iterative methods; Radiology; Reconstruction algorithms;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2003 IEEE
Print_ISBN :
0-7803-8257-9
DOI :
10.1109/NSSMIC.2003.1352494
