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Proceedings Paper

Application Of A 1024X1024 Pixel Digital Image Store, With Pulsed Progressive Readout Camera, For Gastro-Intestinal Radiology
Author(s): E.W. Edmonds; J.A. Rowlands; D.M. Hynes; B.D. Toth; A.J. Porter
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Paper Abstract

We discuss the applicability of intensified x-ray television systems for general digital radiography and the requirements necessary for physician acceptance. Television systems for videofluorography when limited to conventional fluoroscopic exposure rates (25uR/s to x-ray intensifier), with particular application to the gastro-intestinal system, all suffer from three problems which tend to degrade the image: (a) lack of resolution, (b) noise, and (c) patient movement. The system to be described in this paper addresses each of these problems. Resolution is that provided by the use of a 1024 x 1024 pixel frame store combined with a 1024 line video camera and a 10"/6" x-ray image intensifier. Problems of noise and sensitivity to patient movement are overcome by using a short but intense burst of radiation to produce the latent image, which is then read off the video camera in a progressive fashion and placed in the digital store. Hard copy is produced from a high resolution multiformat camera, or a high resolution digital laser camera. It is intended that this PPR system will replace the 100mm spot film camera in present use, and will provide information in digital form for further processing and eventual digital archiving.

Paper Details

Date Published: 12 June 1986
PDF: 9 pages
Proc. SPIE 0626, Application of Optical Instrumentation in Medicine XIV and Picture Archiving and Communication Systems, (12 June 1986); doi: 10.1117/12.975417
Show Author Affiliations
E.W. Edmonds, Mohawk College and McMaster University (Canada)
J.A. Rowlands, University of Toronto (Canada)
D.M. Hynes, University of Toronto (Canada)
B.D. Toth, St. Joseph's Health Centre (Canada)
A.J. Porter, St. Joseph's Health Centre (Canada)

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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