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Proceedings Paper

New Phantoms For Measuring Low Contrast Resolution And Comparison Of Several CT Scanners When Using Them
Author(s): E. Takenaka; T. A. Iinuma; M. Inoue
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Paper Abstract

Measurements of low contrast resolution are most important. Xyron material .( stylene grafted poly-phenyl ether made by Asahi Medical Co.) can have an arbitrary CT number near to CT number of water. Phantoms with xyron-bar-in-water were made. But these phantoms showed different CT number between several CT scanners. They had energy dependency of CT number and were not suitable to measure low con-trast resolution. Then phantoms with xyron-bar-in-xyron were made. These phantomsshowed better differences between CT scanners than the former phantoms. These phantoms are most suitable to measure performance of low contrast resolution. CT number of xyron material decreases as X-ray tube voltage decreases. But differences of xyron bar contrast do not change so much.

Paper Details

Date Published: 1 November 1982
PDF: 6 pages
Proc. SPIE 0372, Physics and Engineering in Medical Imaging, (1 November 1982); doi: 10.1117/12.934516
Show Author Affiliations
E. Takenaka, University of Tokyo (Japan)
T. A. Iinuma, National Institute of Radiological Science (United States)
M. Inoue, Asahi Medical Co.Ltd. (United States)

Published in SPIE Proceedings Vol. 0372:
Physics and Engineering in Medical Imaging
Orhan Nalcioglu, Editor(s)

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