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Proceedings Paper

Planar APD arrays for high-resolution PET
Author(s): Kanai S. Shah; Richard Farrell; Leonard J. Cirignano; Ronald Grazioso; Paul R. Bennett; Simon R. Cherry; Yiping Shao
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Paper Abstract

In this paper, characterization of new, planar silicon avalanche photodiode arrays for high-resolution PET applications is discussed. High gain, monolithic 4 X 4 element APD arrays (2 mm pixels) have been fabricated using planar processes. These devices were characterized by measuring their gain (> 103), quantum efficiency (60% at LSO emission) and noise (200 eV FWHM). Energy and timing resolution of these APDs were also measured by coupling them to LSO scintillators (2 X 2 X 10 mm) and were found to be 12% and 4 ns, respectively. An APD array was also coupled to a matching LSO array and successful experiments were conducted to identify the crystal which scintillated. Finally, initial experiments to measure depth of interaction have also been performed.

Paper Details

Date Published: 6 October 1999
PDF: 8 pages
Proc. SPIE 3770, Medical Applications of Penetrating Radiation, (6 October 1999); doi: 10.1117/12.368173
Show Author Affiliations
Kanai S. Shah, Radiation Monitoring Devices, Inc. (United States)
Richard Farrell, Radiation Monitoring Devices, Inc. (United States)
Leonard J. Cirignano, Radiation Monitoring Devices, Inc. (United States)
Ronald Grazioso, Radiation Monitoring Devices, Inc. (United States)
Paul R. Bennett, Radiation Monitoring Devices, Inc. (United States)
Simon R. Cherry, Univ. of California/Los Angeles (United States)
Yiping Shao, Univ. of California/Los Angeles (United States)


Published in SPIE Proceedings Vol. 3770:
Medical Applications of Penetrating Radiation
H. Bradford Barber; Hans Roehrig, Editor(s)

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