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Proceedings Paper

Modeling blur in various detector geometries for MeV radiography
Author(s): Nicola M. Winch; Scott A. Watson; James F. Hunter
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Paper Abstract

Monte Carlo transport codes have been used to model the detector blur and energy deposition in various detector geometries for applications in MeV radiography. Segmented scintillating detectors, where low Z scintillators combined with a high-Z metal matrix, can be designed in which the resolution increases with increasing metal fraction. The combination of various types of metal intensification screens and storage phosphor imaging plates has also been studied. A storage phosphor coated directly onto a metal intensification screen has superior performance over a commercial plate. Stacks of storage phosphor plates and tantalum intensification screens show an increase in energy deposited and detective quantum efficiency with increasing plate number, at the expense of resolution. Select detector geometries were tested by comparing simulation and experimental modulation transfer functions to validate the approach.

Paper Details

Date Published: 9 March 2017
PDF: 16 pages
Proc. SPIE 10132, Medical Imaging 2017: Physics of Medical Imaging, 101323U (9 March 2017); doi: 10.1117/12.2249110
Show Author Affiliations
Nicola M. Winch, Los Alamos National Lab. (United States)
Scott A. Watson, Los Alamos National Lab. (United States)
James F. Hunter, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 10132:
Medical Imaging 2017: Physics of Medical Imaging
Thomas G. Flohr; Joseph Y. Lo; Taly Gilat Schmidt, Editor(s)

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