Title :
Image reconstruction algorithm for a rotating slat collimator
Author :
Zeng, Gengsheng L. ; Gagnon, Daniel ; Matthews, Christopher G. ; Kolthammer, Jeffery A. ; Radachy, Jason D. ; Hawkins, William
Author_Institution :
Med. Imaging Res. Lab., Utah Univ., Salt Lake City, UT, USA
fDate :
6/23/1905 12:00:00 AM
Abstract :
A slat collimator in SPECT (single photon emission computed tomography) consists of a set of parallel slats. As the collimator spins, the detector measures a one-dimensional projection data set. A complete data set can be obtained by rotating the detector/collimator assembly around the object (patient) while the collimator spins continuously. The measured projection data are assumed to be weighted planar integrals of the object. This paper describes the development of an approximate three-dimensional image reconstruction algorithm for a rotating/spinning slat collimator. This algorithm is in filtered backprojection form. Computer simulations were performed to verify the effectiveness of the algorithm
Keywords :
medical image processing; single photon emission computed tomography; SPECT; detector/collimator assembly; filtered backprojection form; image reconstruction algorithm; projection data set; rotating slat collimator; single photon emission computed tomography; weighted planar integrals; Assembly; Gamma ray detection; Gamma ray detectors; Geometry; Image reconstruction; Object detection; Optical collimators; Single photon emission computed tomography; Spinning; Strips;
Conference_Titel :
Nuclear Science Symposium Conference Record, 2001 IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-7324-3
DOI :
10.1109/NSSMIC.2001.1009188
