Table 3: Mis-positioning of the photon interaction point due to the DOI effect at center and edge (80 mm) of the FOV.

ConfigurationFOV (mm)Mis-positioning center FOV (mm)Mis-positioning edge FOV (mm)
Averaged MaximumAveraged Maximum

2002.9 8.11.9 5.8
Dual detector1004.0 9.42.6 6.7
504.6 9.83.0 7.0
254.8 10.03.1 7.1
Box detector2003.8 8.14.1 9.7
Hexagon detector2005.0 7.52.9 9.2
Octagon detector2004.7 7.32.5 9.3
Dodecagon detector2004.4 7.21.7 9.3