Silicon photomultipliers and SiPM matrices as photodetectors in nuclear medicine
- 1 January 2007
- conference paper
- conference paper
- Published by Institute of Electrical and Electronics Engineers (IEEE)
- Vol. 5, 3220-3223
- https://doi.org/10.1109/nssmic.2007.4436825
Abstract
A high performance detector head with matrices of silicon photomultipliers (SiPMs) is under development at the University of Pisa. The detector head will be employed in the construction of a high spatial resolution, MR compatible small animal PET scanner. Silicon photomultipliers from FBK- irst (Trento, Italy) are being evaluated for this purpose. SiPM elements of 1 mm x 1 mm size and SiPM matrices composed of four (2 x 2) pixel elements have been tested. An intrinsic timing resolution of 60 ps sigma has been measured. The results with LSO crystals show an energy resolution of 20% FWHM at 511 keV, and a coincidence timing resolution of 600 ps rms. New devices with improved characteristics and active area, as well as SiPM matrices with 16 (4 x 4) SiPM elements have been produced, and will be evaluated.Keywords
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