Characterization of silicon photomultiplier readout designs for use in positron emission tomography systems
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Date
2011-10-29
Authors
Liu, Chen-Yi
Journal Title
Journal ISSN
Volume Title
Publisher
Institute of Electrical and Electronics Engineers
Abstract
Geiger-mode avalanche photodiodes, or silicon photomultipliers, are promising light sensors for the next generation Positron Emission Tomography (PET) scanners. The sensor is being used in the scanner’s gamma ray detector to measure scintillation light. This thesis describes the test results of three gamma ray detectors that utilize silicon photomultipliers. The first one is a commercial detector, and the other two are custom made. The detectors are tested for their 511 keV photon energy and timing resolution, as well as their ability to measure light from small scintillator crystals. The two custom made detectors had smaller active area, but outperformed the commercial detector in energy resolution. The introduction of buffer amplifiers improved the timing resolution of one detector. All three detectors had their crystal decoding ability limited by signal multiplexing and the sensor’s dark noise. Finally, a detector design was proposed for the PET system being developed in our group.
Description
Keywords
positron emission tomography
Citation
C.-Y. Liu and A. Goertzen, “Evaluation of the SensL SPMMatrix for use as a detector for PET and gamma camera applications,” 2011 IEEE Nuclear Science Symposium and Medical Imaging Conference, 2011.