Silicon photomultipliers are solid-state single-photon-sensitive devices based on Single-photon avalanche diodes (SPAD) implemented on common silicon substrate. The dimension of each single SPAD can vary from 10 to 100 micrometres, with a density of up to 10,000 per square millimeter.
SiPM for medical imaging are attractive candidates for the replacement of the conventional PMT in PET and SPECT imaging, since they provide high gain with low voltage and fast response, they are very compact and compatible with magnetic resonance setups. Nevertheless, there are still several challenges, for example, SiPM requires optimization for larger matrices, signal amplification and digitization.
Small Cell and Pitch
High Cell Density and Fill Factor
Large Dynamic Range and High PDE
Fast Rise Time and Narrow Pulse Width
Short Recovery Time and High Time Resolution
Small Terminal Capacitance and Cost Effective
High Energy Physics
Nuclear Medical Imaging (PET, SPECT, CT)
Radiation Detection and Imaging
Other Low Level Light Detection