γ-peak is collected in Table 3. For a comparison, the ratio of the cross-sections for the photoelectric effect
to the total one was calculated using WinXCom program [16]. LSO:Ce shows slightly higher
photofraction than LYSO:Ce in a same trend with the cross-section ratio (σ-ratio) obtained from
WinXCom program, reflecting its slightly higher density and effective atomic number (Zeff).