NDLI: Signal to Noise Ratio of Monolithic Scintillator Detectors for High Resolution PET

Content Provider	IEEE Xplore Digital Library
Author	Maas, M.C. van der Laan, D.J. Schaart, D.R. Bruyndonckx, P. Lemaitre, C. van Eijk, C.W.E.
Copyright Year	2006
Description	Author affiliation: Delft Univ. of Technol. (Maas, M.C.; van der Laan, D.J.; Schaart, D.R.)
Abstract	Monolithic scintillator detectors, consisting of several $cm^{3}$ of scintillating material coupled to one or more Hamamatsu S8550 avalanche photodiode (APD) arrays, have been proposed as detectors for high resolution positron emission tomography (PET). These detectors eliminate the dead space caused by reflective material between crystal pixels, and provide good depth of interaction (DOI) information. The entry point of impinging annihilation photons on the front surface of the detector is derived from the scintillation light distribution on the APD array(s). In this work, the various contributions to the energy and timing resolutions were analysed, as well as the influence of several contributions to the spatial resolution. Energy resolutions of around 11.5% FWHM at 511 keV were measured, the major part of which was found to be due to the intrinsic photon variance of the scintillator. A timing resolution of 1.6 ns FWHM was measured against a $BaF_{2}-PMT$ detector. The timing resolution was found to be strongly gain dependent. Spatial resolutions of around 1.75 mm FWHM were measured, fairly independent of the APD gain. This figure still needs to be corrected for the ~0.9 mm FWHM measurement beam.
Starting Page	3027
Ending Page	3031
File Size	202401
Page Count	5
File Format	PDF
ISBN	1424405602
ISSN	10957863
DOI	10.1109/NSSMIC.2006.356512
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2006-10-29
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Signal to noise ratio Signal resolution Positron emission tomography Spatial resolution Energy resolution Solid scintillation detectors Timing Crystalline materials Sensor arrays Avalanche photodiodes signal to noise ratio Monolithic scintillator detectors positron emission tomography avalanche photodiode
Content Type	Text
Resource Type	Article

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