Abstract
Portable nuclear imaging devices can be used to guide radio-photo-thermal therapy (PTT) of cancer for better efficacy. In this study, we develop a 100 mm x 100 mm triple layer prototype gas electron multiplier (GEM) detector for beta particle imaging. It consists of one drift layer, three GEM foil layers, and a 1D signal readout board with 2 x 64 channels. The DAQ system consists of readout card, trigger system (pre-amplifier and discriminator) and scalable readout system (SRS). With suppression of the background noise and collimated scanning, a 2D image of a Copper-64 source was successfully acquired. This work paves the way for the development of portable GEM imaging devices to improve the efficacy of Radio-PTT.
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