Title :
Image reconstruction for a novel SPECT system with rotating slant-hole collimators
Author :
Clack, Rolf ; Christian, Paul E. ; Defrise, Michel ; Welch, Andrew E.
Author_Institution :
Dept. of Radiol., Utah Univ., Salt Lake City, UT, USA
fDate :
30 Oct-5 Nov 1994
Abstract :
We are investigating the use of rotating slant-hole (RSH) collimators on conventional SPECT machines. The main interest in this configuration is the potential for increased photon sensitivity over standard parallel-hole collimator systems. Projection data from an RSH-SPECT system presents a novel but tractable image reconstruction problem. Special features of RSH-SPECT, such as the dimensions of the field-of-view and the rotation requirements of the detector head, are discussed, and image reconstruction is presented in some detail. Data from a Jaszczak cardiac phantom were acquired on an experimental RSH system and reconstructed. Limited-angle artifacts were clearly seen on images reconstructed from a single set of data (classical RSH). The reconstructions from multi-view datasets verify the full tomographic capability of the RSH-SPECT system
Keywords :
biomedical equipment; cardiology; gamma-ray detection; image reconstruction; medical image processing; single photon emission computed tomography; Jaszczak cardiac phantom; SPECT system; conventional SPECT machines; detector head; field-of-view; image reconstruction; increased photon sensitivity; limited-angle artifacts; multi-view datasets; projection data; rotating slant-hole collimators; rotation requirements; tomographic capability; Biomedical imaging; Cameras; Detectors; Image converters; Image reconstruction; Laboratories; Magnetic heads; Optical collimators; Radiology; Single photon emission computed tomography;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record
Conference_Location :
Norfolk, VA
Print_ISBN :
0-7803-2544-3
DOI :
10.1109/NSSMIC.1994.474685
