Search for: [Abstract = "zation of the reconstruction parameters. The quality of images was estimated by two independent observers, according to the two\-gradual scale\: 0\-poor visible lesion, 1\-very well visible lesion. The qualitative lesions assessment as 0 or 1 was determined by intensity tracer uptake. Special attention was paid to the lesions location near the large gatherings of activity \(spleen, kidneys\). All lesions in group I and II were divided into four subgroups in dependence on VOI size\: subgroup 1\-VOI<1,6cm3, subgroup 2 VOI\:1,6–3,2cm3, subgroup 3\-VOI\:3,2–5cm3, subgroup 4–VOI >5cm3. The target\/non\-target coefficient \(TCS\/TCB\) was analyzed for the quantitative assessment. The VOI of the lesion and background had the same value and was stable for each the reconstruction parameters. The scheme of SPECT images optimization with use of OSEM technique included 34 settings of the reconstruction parameters. The analysis was performed in the consecutive phases\: phase 1–the analysis of variable subsets number \(s=8,16,32\) and variable iterations number \(i=2\-7\), phase 2\-the analysis of stable subsets number \(s=8\) and variable iterations number \(i=6\-30\) with step equal 4 iterations, phase 3–the assessment of influence of the scatter correction on OSEM\(8,10\) setting, phase 4–the Gauss filter assess \(FWHM=n·p\[mm\]\; n = 1,2,3,...,7\; p=3,9≈4\[mm\]\) for OSEM\(8,10\) with used the scatter corre"]

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