Depth of interaction determination in monolithic scintillator with double side SiPM readout

EJNMMI Physics

Table 4 Summary of depth of interaction reconstruction capability of the detector using the combination of the two investigated parameters, with both calibration methods: using the natural radioactivity of the lutetium and with the lateral scan

Y beam position	Calibration method	Bias (mm) Z _real in [0 mm, 10 mm]	Bias (mm) Z _real in [2 mm, 8 mm]	σ (mm) Z _real in [0 mm, 10 mm]
0 mm	Lutetium	0.27	0.09	1.28
0 mm	Lateral scan	0.19	0.18	1.44
1.8 mm	Lutetium	0.38	0.26	1.41
1.8 mm	Lateral scan	0.13	0.09	1.48