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Proceedings Paper

Evaluation of basic imaging properties of a new digital chest system
Author(s): Steven M. Montner; Xin-Wei Xu; Masatoshi Tsuzaka; Kunio Doi; Heber MacMahon; Hitoshi Yoshimura; Shigeru Sanada; Maryellen Lissak Giger; Fang-Fang Yin
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Paper Abstract

A prototype digital chest system, which uses storage phosphor technology and has the advantages over existing computed radiography systems (CR) of compactness and immediate image display, is being evaluated in our laboratory. We evaluated the imaging properties of the Konica Direct Digitizer (KDD) in order to assess its potential usefulness for general clinical use, or as a front-end for a PACS. The prototype system consists of a new stimulable phosphor (RbBr.Tl) detector read by a compact semiconductor laser scanning system, with images immediately displayed on a CRT or transferred to a host computer. The imaging characteristics of resolution and noise were evaluated, using display parameters matched to a Kodak Lanex Medium/OC system. Preliminary results using sensitive composite test objects show an increase in noise and a slight decrease in resolution as compared to conventional radiography. However, subjective comparison of a chest phantom and volunteer images indicates that these differences may not be clinically significant. Further development is needed to provide increased absorption, and thus improved image quality.

Paper Details

Date Published: 1 July 1990
PDF: 4 pages
Proc. SPIE 1231, Medical Imaging IV: Image Formation, (1 July 1990);
Show Author Affiliations
Steven M. Montner, Univ. of Chicago (United States)
Xin-Wei Xu, Univ. of Chicago (United States)
Masatoshi Tsuzaka, Univ. of Chicago (United States)
Kunio Doi, Univ. of Chicago (United States)
Heber MacMahon, Univ. of Chicago (United States)
Hitoshi Yoshimura, Univ. of Chicago (United States)
Shigeru Sanada, Univ. of Chicago (United States)
Maryellen Lissak Giger, Univ. of Chicago (United States)
Fang-Fang Yin, Univ. of Chicago (United States)

Published in SPIE Proceedings Vol. 1231:
Medical Imaging IV: Image Formation
Roger H. Schneider, Editor(s)

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