Physical Imaging Properties and Low-contrast Performance of a Newly Developed Flat-panel Digital Radiographic System

• MATSUMOTO MASAO

  Division of Health Science, Graduate School of Medicine, Osaka University

• YAMAZAKI TATSUYA

  DR System Development Division, Canon Inc.

• NOKITA MAKOTO

  DR System Development Division, Canon Inc.

• HAYASHIDA SHINSUKE

  DR System Development Division, Canon Inc.

• YOSHIDA AKIRA

  Department of Radiological Sciences, Hiroshima Prefectural College of Health Science

• IDEGUCHI TADAMITSU

  Department of Radiology, National Kyushu Medical Center

• HIMURO KAZUHIKO

  Department of Radiology, Kyushu University Hospital

• OHKI MASAFUMI

  Department of Health Science, School of Medicine, Kyushu University

• KUMAZAWA SEIJI

  Department of Health Science, School of Medicine, Kyushu University

• HIGASHIDA YOSHIHARU

  Department of Health Science, School of Medicine, Kyushu University

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_20_2S-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.

Journal

• Japanese Journal of Radiological Technology

  Japanese Journal of Radiological Technology 61 (12), 1656-1665, 2005

  Japanese Society of Radiological Technology

Keywords

• Flat-panel detector (FPD)
• Physical imaging property
• Low-contrast performance
• Contrast-detail (C-D) phantom
• Digital radiography system

Details

• CRID: 1390001206390272000
• NII Article ID: 110004756035
• NII Book ID: AN00197784
• DOI: 10.6009/jjrt.kj00004017357
• ISSN: 18814883
• ISSN: 03694305
• ISSN: http://id.crossref.org/issn/03694305
• NDL BIB ID: 7777975
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7777975
• Web Site: https://www.jstage.jst.go.jp/article/jjrt/61/12/61_KJ00004017357/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/2006295362
• Text Lang: en
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed