Title :
A Post-Processing Method of Scatter Modeling in SPECT
Author :
Yan, Yan ; Zeng, Gengsheng L.
Author_Institution :
Dept. of Phys., Utah Univ., Salt Lake City, UT
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
In this paper, we propose a post-processing method to estimate the scattering effect in SPCET. The estimation is performed in the reconstructed image. An efficient filtered backprojection algorithm is used to reconstruct the image. A two-dimensional scatter point spread function (2D-PSF) in the image domain is proposed and obtained from a point source object and a non-uniform attenuation map in an efficient way. The estimated 2D-PSF is compared with the results from the Monte Carlo simulations. The immediate application of this 2D-PSF is in image deblurring to compensate for the scattering effect.
Keywords :
image denoising; image reconstruction; medical image processing; optical transfer function; scattering; single photon emission computed tomography; 2D PSF; 2D scatter point spread function; SPECT; filtered backprojection algorithm; image deblurring; nonuniform attenuation map; post processing method; reconstructed image; scatter modeling; scattering effect; Attenuation; Collimators; Electromagnetic scattering; Image reconstruction; Iterative methods; Kernel; Particle scattering; Rayleigh scattering; Reconstruction algorithms; Single photon emission computed tomography;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2006. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
1-4244-0560-2
Electronic_ISBN :
1095-7863
DOI :
10.1109/NSSMIC.2006.356426
