Readout of LYSO using a new silicon photodetector for positron emission tomography

M. L. Lerch, University of Wollongong
R. Ward, University of Wollongong
P. E. Simmonds, University of Wollongong
V. L. Perevertailo, SPA-BIT "Detector", Kiev, Ukraine
S. R. Meikle, Royal Prince Alfred Hospital, Sydney
G. N. Taylor, University of Melbourne
A. Rosenfeld, University of Wollongong

Article comments

This article was originally published as: Lerch, MLF, Ward, R, Simmonds, PE et al, Readout of LYSO using a new silicon photodetector for positron emission tomography, IEEE Nuclear Science Symposium, 19-25 October 2003, vol 2, 1408-1412. Copyright IEEE 2003.

Abstract

This article focuses on the characterisation of three versions of a custom designed silicon photodetector using nuclear spectroscopy techniques. Room temperature gamma ray spectroscopy experiments have been performed using an LYSO excited by /sup 137/Cs and /sup 22/Na sources and read out by the new photodiodes. We have measured an energy resolution of 13.1% FWHM for the 511 keV gamma rays from a /sup 22/Na source and 11.2% FWHM for the 662 keV gamma rays from a /sup 137/Cs source. This is one of the best ever-reported energy resolutions for a lutetium based scintillator crystal read out by a silicon photodetector.