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Proceedings Paper

Update On The University Of Arizona's Advanced X-Ray Imager
Author(s): H. Roehrig; W. Dallas; R. Lamoreaux; K. McNeill; T. W. Ovitt; R. Vercillo
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Paper Abstract

A novel x-ray imaging device is under development for use in high resolution imaging applications such as coronary angiography. It consists of a six inch diameter, external CsI x-ray sensor, coupled fiber optically to a proximity focussed image intensifier. The image intensifier is coupled through a coplanar fiber optic taper assembly to six CCD's for readout. Analog and digital electronics have been developed to combine the six individual images to a composite image of 1152 by 1152 pixels and display that image in full resolution on a physician's workstation. Distortions as caused by the fiber optic taper assembly are minimal (mostly less than 2% and often less than 1%) and can be corrected in software. The light output of the external sensors is lower than expected. The proximity focussed image intensifiers show field emission points and black ("dead") spots of non-response of the photocathode and are virtually useless.

Paper Details

Date Published: 1 May 1989
PDF: 12 pages
Proc. SPIE 1090, Medical Imaging III: Image Formation, (1 May 1989); doi: 10.1117/12.953223
Show Author Affiliations
H. Roehrig, The University of Arizona (United States)
W. Dallas, The University of Arizona (United States)
R. Lamoreaux, The University of Arizona (United States)
K. McNeill, The University of Arizona (United States)
T. W. Ovitt, The University of Arizona (United States)
R. Vercillo, The University of Arizona (United States)

Published in SPIE Proceedings Vol. 1090:
Medical Imaging III: Image Formation
Samuel J. Dwyer; R. Gilbert Jost; Roger H. Schneider, Editor(s)

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