Physical imaging properties and low-contrast performance of a newly developed flat-panel digital radiographic system.

Masao Matsumoto, Tatsuya Yamazaki, Makoto Nokita, Shinsuke Hayashida, Akira Yoshida, Tadamitsu Ideguchi, Kazuhiko Himuro, Masafumi Ohki, Seiji Kumazawa, Yoshiharu Higashida

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

We investigated the clinical usefulness of a newly developed flat-panel detector (FPD) system by comparing its physical imaging properties and low-contrast detectability with those of a current FPD system. The newly developed CsI-based indirect FPD (Canon, CXDI-40C) and current Gd(2)O(2)S-based FPD (Canon CXDI-11) systems were used. Characteristic curves, resolution properties, radiographic noise, detective quantum efficiencies (DQEs) and low-contrast detectability for both systems were measured. The new FPD system showed considerably lower noise levels than those of the current FPD system. DQE (0) s of the new and current FPD systems were 75% and 35%, respectively. Observer performance tests of the contrast-detail (C-D) phantom indicated that the new FPD system can significantly improve low-contrast performance over that obtainable with the current FPD system under the same conditions of exposure. The new FPD system provided approximately 50% reduction in exposure while providing comparable detectability. The newly developed FPD system provides radiographic images with excellent inherent physical image quality and low-contrast performance.

Original languageEnglish
Pages (from-to)1656-1665
Number of pages10
JournalNippon Hoshasen Gijutsu Gakkai zasshi
Volume61
Issue number12
DOIs
Publication statusPublished - Dec 20 2005

All Science Journal Classification (ASJC) codes

  • Medicine(all)

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