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Table 2 Comparison of the characteristics of the DPC-PET for NECR and scatter fraction between the experimental and Monte Carlo simulated data in this study

From: Monte Carlo simulation of digital photon counting PET

ParameterExperimentalMC simulationRausch et al. [4]Zhang et al. [5]
NECR @ peak value159.4 kcps @ 54.9 kBq mL −1175.6 kcps @ 52.4 kBq mL −1153.4 kcps @ 54.9 kBq mL −1171 kcps @ 50.5 kBq mL −1
NECR @ 5.3 kBq mL −148.5 kcps52.2 kcps47.2 kcpsn/a
Scatter fraction @ peak NECR33.2% @ 54.9 kBq mL −129.2% @ 52.4 kBq mL −133.9% @ 54.9 kBq mL −130.8% @ 50.5 kBq mL −1
Scatter fraction @ low count rates31.8% @ 0.4 kBq mL −130.3% @ 0.4 kBq mL −131.7% @ 0.4 kBq mL −1n/a
  1. Additional comparison is added from experimental data published from Rausch et al. [4] and Zhang et al. [5]. Values marked with an asterisk () represent ’maximum’ instead of peak values since the system did not show a peak value beyond which the NECR began to decrease with increasing activity