Title :
An analytical algorithm for skew-slit imaging geometry with uniform attenuation correction in SPECT
Author :
Tang, Qiulin ; Zeng, Gengsheng L. ; Huang, Qiu
Author_Institution :
Dept. of Phys., Utah Univ., Salt Lake City, UT
fDate :
Oct. 29 2006-Nov. 1 2006
Abstract :
To replace the conventional pinhole (normal cone-beam) collimator, a novel skew-slit collimator was previously proposed and a Novikov-type algorithm developed to reconstruct images using the skew-slit geometry. The goal of this paper is to develop a reconstruction algorithm that has better noise control than the Novikov-type algorithm. The new algorithm is able to compensate for uniform attenuation and computer simulation results show that reconstructed images are less noisy.
Keywords :
collimators; medical image processing; single photon emission computed tomography; SPECT; attenuation correction; noise control; single photon emission computed tomography; skew-slit collimator; Algorithm design and analysis; Attenuation; Collimators; Fourier transforms; Geometry; Image analysis; Image reconstruction; Nuclear and plasma sciences; Reconstruction algorithms; Spatial resolution;
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.2006.356465