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Proceedings Paper

Application Of Digital Fluoroscopic Image Data In Radiation Dosimetry
Author(s): T.K. M. Nair; F. M. Edwards; K. W. Logan
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Paper Abstract

A dual energy imaging technique was developed in a digital fluoroscopic unit and a method for calculating the thickness of bone and effective soft tissue was developed using the image data obtained from tissue equivalent phantom material. The thicknesses were then combined by using their densities and a single weighting factor was obtained at each pixel location and was used for modifying the attenuation and scattering property of the Cobalt 60 gamma radiation, for heterogeneity correction in clinical dosimetry. A sector integration algorithm was developed and used for dose calculation in an irregularly shaped radiation field used for treatment of lung cancer. The calculated doses after heterogeneity correction were compared with measured values in phantom using film densitometry. The performance parameters of the imaging system such as the dynamic range, linearity, spectral property and the geometrical distortion were evaluated and discussed,

Paper Details

Date Published: 12 June 1986
PDF: 8 pages
Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); doi: 10.1117/12.975377
Show Author Affiliations
T.K. M. Nair, Flower Memorial Hospital (United States)
F. M. Edwards, University of Missouri Columbia (United States)
K. W. Logan, University of Missouri Columbia (United States)

Published in SPIE Proceedings Vol. 0626:
Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems
Samuel J. Dwyer III; Roger H. Schneider, Editor(s)

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