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Effect of scatter from radioactivity outside of the field of view in 3D PET

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5 Author(s)
Sossi, V. ; British Columbia Univ., Vancouver, BC, Canada ; Barney, J.S. ; Harrison, R. ; Moisan, C.
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The contribution of the scattered events originating from radioactivity outside the tomograph field of view (ROFOV) is treated differently by different scatter correction algorithms. The authors have evaluated the amount of scatter originating from ROFOV with measurements and Monte Carlo calculations, its axial and transaxial distribution in two energy windows for direct and a subset of oblique planes in 3D PET. Nonuniform distributions were observed with the total contribution found to be non-negligible when the amount of radioactivity OFOV was comparable to the radioactivity in the FOV

Published in:

Nuclear Science Symposium and Medical Imaging Conference, 1994., 1994 IEEE Conference Record  (Volume:4 )

Date of Conference:

30 Oct-5 Nov 1994