Title :
Model based scatter correction in three dimensions [positron emission tomography]
Author :
Ollinger, John M. ; Johns, Gerald C. ; Burney, M.T.
Author_Institution :
Washington Univ., Seattle, WA, USA
Abstract :
A method for approximating the mean of the distribution of scattered events in which only one of the two photons is scattered is presented. The technique uses emission images, transmission images, and the physics of Compton scatter to compute the estimate with a table-driven approach. Although implemented for use with scanners using interplane septa, the algorithm is three-dimensional in nature and can be easily extended for use with fully 3-D data. Preliminary phantom studies show good agreement between the estimated and experimental scatter distributions
Keywords :
computerised tomography; medical image processing; radioisotope scanning and imaging; 3D algorithm; Compton scatter physics; emission images; interplane septa; medical diagnostic imaging; model based scatter correction; nuclear medicine; positron emission tomography; scattered events distribution; table-driven approach; transmission images; Attenuation; Cancer detection; Detectors; Electromagnetic scattering; Imaging phantoms; Integral equations; Particle scattering; Photonic crystals; Positron emission tomography; Yield estimation;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference, 1992., Conference Record of the 1992 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-0884-0
DOI :
10.1109/NSSMIC.1992.301494
