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High spatial resolution detector using an 8×8 MLS crystal array and a quad anode photomultiplier

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2 Author(s)
Kim, C.L. ; Gen. Electr. Med. Syst., Waukesha, WI, USA ; McDaniel, D.L.

A compact and high position resolution detector for whole body PET has been developed using an 8×8 MLS scintillation crystal array and a quad-anode photomultiplier. The scintillation crystal block consists of 64 single crystals with dimensions of 4.67×4.67×30mm3. Light sharing is controlled through the finishes of the crystal surfaces, Teflon reflective layers and a simple thin light guide. The block properties have been characterized using 511 keV gamma rays using Ge68. Peaks in the crystal decoding map are well isolated with an average peak-to-valley ratio of 3.17. An energy resolution of 15% FWHM and a timing resolution of 1.2 ns FWHM were obtained.

Published in:

Nuclear Science Symposium Conference Record, 2002 IEEE  (Volume:3 )

Date of Conference:

10-16 Nov. 2002