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Proceedings Paper

Positron emission tomography coincidence detection with photon polarization correlation
Author(s): Aimee L. McNamara; Kinwah Wu; David Boardman; Mark I. Reinhard; Zdenka Kuncic
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Paper Abstract

Two-photon annihilation quanta are emitted in a pure quantum state and when detected in coincidence, the photon pairs possess orthogonal polarizations. We propose that this polarization correlation can be exploited in Positron Emission Tomography (PET), which relies crucially on accurate coincidence detection of photon pairs. In this proof of concept study, we investigate how photon polarization information can be exploited in PET imaging by developing a method to discern true coincidences using the polarization correlation of annihilation pairs. We demonstrate that the unique identification of true photon pairs with their polarization correlation can dramatically enhance overall PET image quality, especially for high emission rates, when conventional, energy- based coincidence detection methods become increasingly unreliable. Our results suggest that polarization-based coincidence detection offers new prospects for in vivo molecular imaging with next-generation PET systems.

Paper Details

Date Published: 6 March 2013
PDF: 8 pages
Proc. SPIE 8668, Medical Imaging 2013: Physics of Medical Imaging, 86681U (6 March 2013); doi: 10.1117/12.2007794
Show Author Affiliations
Aimee L. McNamara, The Univ. of Sydney (Australia)
Australian Nuclear Science and Technology Organisation (Australia)
Kinwah Wu, The Univ. of Sydney (Australia)
Univ. College London (United Kingdom)
David Boardman, Australian Nuclear Science and Technology Organisation (Australia)
Mark I. Reinhard, Australian Nuclear Science and Technology Organisation (Australia)
Zdenka Kuncic, The Univ. of Sydney (Australia)

Published in SPIE Proceedings Vol. 8668:
Medical Imaging 2013: Physics of Medical Imaging
Robert M. Nishikawa; Bruce R. Whiting; Christoph Hoeschen, Editor(s)

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