Position Sensitive APDs for Small Animal Pet Imaging

Kanai S. Shah; Ronald Graziose; Richard Farrell; Jarek Glodo; Mickel A. Mcclish; Gerald Entine; Purushottam A. Dokhale; Simon R Cherry

Position Sensitive APDs for Small Animal Pet Imaging

Kanai S. Shah, Ronald Graziose, Richard Farrell, Jarek Glodo, Mickel A. Mcclish, Gerald Entine, Purushottam A. Dokhale, Simon R Cherry

Radiology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

In this paper, an investigation of position sensitive avalanche photodiodes (PSAPDs) as optical detectors for reading out segmented scintillation arrays of LSO in high-resolution PET modules is reported. PSAPDs with 8 × 8 mm² have been characterized with single LSO crystals and arrays. Energy resolution of 19% (FWHM) for 511 keV γ-rays and coincidence timing resolution of ∼3 ns (FWHM) have been recorded with PSAPD coupled to 1 × 1 × 20 mm³ LSO detectors. Flood histogram studies have been successfully conducted by coupling multi-element element LSO arrays (1 mm pixels, 20 mm tall) to the PSAPDs. Finally, depth of interaction (DOI) resolution of < 4.5 mm (FWHM) has been measured by coupling two PSAPDs on opposite ends of a 20 mm long LSO crystal with a 1 × 1 mm² cross section. Based on these results, PSAPDs appear to be promising for high resolution PET. An important advantage of these PSAPDs is significant reduction in electronic readout requirements.

Original language	English (US)
Title of host publication	IEEE Nuclear Science Symposium and Medical Imaging Conference
Editors	S. Metzler
Pages	1411-1415
Number of pages	5
Volume	3
State	Published - 2002
Event	2002 IEEE Nuclear Science Symposium Conference Record - Norfolk, VA, United States Duration: Nov 10 2002 → Nov 16 2002

Other

Other	2002 IEEE Nuclear Science Symposium Conference Record
Country	United States
City	Norfolk, VA
Period	11/10/02 → 11/16/02

ASJC Scopus subject areas

Computer Vision and Pattern Recognition
Industrial and Manufacturing Engineering

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Position Sensitive APDs for Small Animal Pet Imaging. / Shah, Kanai S.; Graziose, Ronald; Farrell, Richard; Glodo, Jarek; Mcclish, Mickel A.; Entine, Gerald; Dokhale, Purushottam A.; Cherry, Simon R.

IEEE Nuclear Science Symposium and Medical Imaging Conference. ed. / S. Metzler. Vol. 3 2002. p. 1411-1415.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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abstract = "In this paper, an investigation of position sensitive avalanche photodiodes (PSAPDs) as optical detectors for reading out segmented scintillation arrays of LSO in high-resolution PET modules is reported. PSAPDs with 8 × 8 mm2 have been characterized with single LSO crystals and arrays. Energy resolution of 19% (FWHM) for 511 keV γ-rays and coincidence timing resolution of ∼3 ns (FWHM) have been recorded with PSAPD coupled to 1 × 1 × 20 mm3 LSO detectors. Flood histogram studies have been successfully conducted by coupling multi-element element LSO arrays (1 mm pixels, 20 mm tall) to the PSAPDs. Finally, depth of interaction (DOI) resolution of < 4.5 mm (FWHM) has been measured by coupling two PSAPDs on opposite ends of a 20 mm long LSO crystal with a 1 × 1 mm2 cross section. Based on these results, PSAPDs appear to be promising for high resolution PET. An important advantage of these PSAPDs is significant reduction in electronic readout requirements.",

author = "Shah, {Kanai S.} and Ronald Graziose and Richard Farrell and Jarek Glodo and Mcclish, {Mickel A.} and Gerald Entine and Dokhale, {Purushottam A.} and Cherry, {Simon R}",

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AU - Shah, Kanai S.

AU - Graziose, Ronald

AU - Farrell, Richard

AU - Glodo, Jarek

AU - Mcclish, Mickel A.

AU - Entine, Gerald

AU - Dokhale, Purushottam A.

AU - Cherry, Simon R

PY - 2002

Y1 - 2002

N2 - In this paper, an investigation of position sensitive avalanche photodiodes (PSAPDs) as optical detectors for reading out segmented scintillation arrays of LSO in high-resolution PET modules is reported. PSAPDs with 8 × 8 mm2 have been characterized with single LSO crystals and arrays. Energy resolution of 19% (FWHM) for 511 keV γ-rays and coincidence timing resolution of ∼3 ns (FWHM) have been recorded with PSAPD coupled to 1 × 1 × 20 mm3 LSO detectors. Flood histogram studies have been successfully conducted by coupling multi-element element LSO arrays (1 mm pixels, 20 mm tall) to the PSAPDs. Finally, depth of interaction (DOI) resolution of < 4.5 mm (FWHM) has been measured by coupling two PSAPDs on opposite ends of a 20 mm long LSO crystal with a 1 × 1 mm2 cross section. Based on these results, PSAPDs appear to be promising for high resolution PET. An important advantage of these PSAPDs is significant reduction in electronic readout requirements.

AB - In this paper, an investigation of position sensitive avalanche photodiodes (PSAPDs) as optical detectors for reading out segmented scintillation arrays of LSO in high-resolution PET modules is reported. PSAPDs with 8 × 8 mm2 have been characterized with single LSO crystals and arrays. Energy resolution of 19% (FWHM) for 511 keV γ-rays and coincidence timing resolution of ∼3 ns (FWHM) have been recorded with PSAPD coupled to 1 × 1 × 20 mm3 LSO detectors. Flood histogram studies have been successfully conducted by coupling multi-element element LSO arrays (1 mm pixels, 20 mm tall) to the PSAPDs. Finally, depth of interaction (DOI) resolution of < 4.5 mm (FWHM) has been measured by coupling two PSAPDs on opposite ends of a 20 mm long LSO crystal with a 1 × 1 mm2 cross section. Based on these results, PSAPDs appear to be promising for high resolution PET. An important advantage of these PSAPDs is significant reduction in electronic readout requirements.

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