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[en] In order to reduce degrading influence of attenuation on SPECT image quality, possibility for correction, based on simultaneous emission / transmission measurements, is discussed. Numerical photon transport simulations through the phantom and acquisition of of tomographic projections are performed by using Monte Carlo code MCNP-4A. Amount of contamination in transmission data due to photon Compton scattering for emission energy window is specially analyzed and appropriate spatial depending 'noise / signal' factors for three different external sources, applied with Tc-99m, are determined (author)
Source
1998; 4 p; Society for Electronics,Telecommunications, Computers, Automation, and Nuclear Engineering, Belgrade; Belgrade (Yugoslavia); 42. Conference - ETRAN '98: Society for Electronics, Telecommunications, Computers, Automation, and Nuclear Engineering; ETRAN '98: 42. Konferencija za elektroniku, telekomunikacije, racunarstvo, automatiku i nuklearnu tehniku; Vrnjacka Banja (Yugoslavia); 2-5 Jun 1998; ISBN 86-80509-28-0; 
; Also available from Institute of Nuclear Sciences VINCA; 12 refs, 5 figs. This record replaces records 29062694
; Also available from Institute of Nuclear Sciences VINCA; 12 refs, 5 figs. This record replaces records 29062694