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Proceedings Paper

Novel hybrid imaging modalities
Author(s): George C. Giakos; Srinivasan Vedantham; Samir Chowdhury; Bindu Pillai
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Paper Abstract

The purpose of this paper is to present the engineering principles of a cost-effective and efficient positron emission tomography (PET) detector operating on novel hybrid principles. The novelty of the proposed technology, which can be considered a low-cost alternative to the photomultiplier tube, consists of a BaF2 crystal coupled to coupled to an ultra low-pressure noble-gas filled tube, which operates under photoionization of excited states, in the prebreakdown regime. The design detector principles, the first Townsend coefficient, and the gas multiplication factor of the hybrid microstrip detector have been studied. The results of this study indicate that an adequate gas multiplication process can be achieved with a Xe filled gas detector operating at low gas pressures. Also, low-pressure gas-filled detectors have the advantages of being themselves insensitive to radiation, ensuring that only the light from the scintillator is detected in a high-energy radiation environment.

Paper Details

Date Published: 2 May 1997
PDF: 12 pages
Proc. SPIE 3032, Medical Imaging 1997: Physics of Medical Imaging, (2 May 1997); doi: 10.1117/12.274019
Show Author Affiliations
George C. Giakos, Univ. of Akron (United States)
Srinivasan Vedantham, Univ. of Akron (United States)
Samir Chowdhury, Univ. of Akron (United States)
Bindu Pillai, Univ. of Akron (United States)

Published in SPIE Proceedings Vol. 3032:
Medical Imaging 1997: Physics of Medical Imaging
Richard L. Van Metter; Jacob Beutel, Editor(s)

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