Abstract
Aim: Silicon Photomultipliers (SiPMs) are relatively insensitive to magnetic fields and thus are good candidates for MR combined applications [1-2]. In this study, we present the results of the SensL ArraySL-4 (4x4 element array of 3x3mm2 SiPMs) photo-detector coupled to a 6x6 GAGG:Ce scintillator array, with 2x2x5mm3 crystal size elements and pitch equal to 2.1mm. Experimental evaluation was carried out with 22Na and 137Cs radioactive sources in terms of energy resolution and peak to valley ratio.
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