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2005 Fiscal Year Final Research Report Summary

Examination of the safety of the exclusive liquid crystal display monitor for diagnostic imaging and research on the test picture development for accuracy management.

Research Project

Project/Area Number 15390359
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Radiation science
Research InstitutionNagoya University

Principal Investigator

ISHIGAKI Takeo  Nagoya University, Graduate School of Medicine, Professor, 大学院・医学系研究科, 教授 (60094356)

Co-Investigator(Kenkyū-buntansha) IKEDA Mitsuru  Nagoya University, School of Medicine, Associate Profess, 医学部, 助教授 (50184437)
SHIMAMOTO Kazuhiro  Nagoya University, School of Medicine, Professor, 医学部, 教授 (70178961)
KODERA Yosie  Nagoya University, School of Medicine, Professor, 医学部, 教授 (10124794)
Project Period (FY) 2003 – 2005
Keywordsliquid crystal display / diagnostic ability of monitor / monitor for image diagnosis / safety of liquid crystal display
Research Abstract

Fundamental examination of a liquid crystal display monitor showed that IPS (In-plane Switching) mode and VA (Vertically Aligned) mode were most suitable as an object for diagnostic imaging. Although the time of luminosity degradation of a liquid crystal display monitor was far loose compared with the CRT monitor, when it became in continuation 10,000 hours, it turned out that luminosity falls to 70-80% of an initial value. Early luminosity is kept in the monitor in which the luminosity stabilization circuit is included for at least 10,000 hours. At the target of low contrast, a liquid crystal display can be used as substitution of a CRT monitor. The influence of indoor illumination was not significant and it was suggested also under bright lighting that a liquid crystal display can be used. even if compared with a CRT monitor about the diagnostic ability of a liquid crystal display monitor (1M, 2M, 3M, and 5M). That is, a liquid crystal display monitor can be replaced with a CRT monitor for diagnostic imaging (except for mammography). In the research of a mammo gram using 3M liquid crystal display monitor, the fall of the diagnostic ability of a non-palpable calcification lesion was not seen. From these research results, it is concluded that the test picture for the luminosity degradation judging of a CRT monitor (a clinical picture and contrast chart) would be applicable also to the luminosity degradation judging of a liquid crystal display monitor.

  • Research Products

    (6 results)

All 2006 2005 2003

All Journal Article (6 results)

  • [Journal Article] The influence of liquid crystal display (LCD) monitors on observer performance for the detection of nodular lesions on chest radiographs2006

    • Author(s)
      H.Usami, M.Ikeda, T.Ishigaki, H.Fukushima, K.Shimamoto
    • Journal Title

      Eur Radiol 16

      Pages: 726-732

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] The influence of liquid crystal display (LCD) monitors on observer performance for the detection of nodular lesions on chest radiographs.2006

    • Author(s)
      H.Usami, M.Ikeda, T.Ishigaki, H.Fukushima, K.Shimamoto.
    • Journal Title

      Eur Radiol 16

      Pages: 726-732

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] 画像観察モニタに関する諸問題2005

    • Author(s)
      石垣武男
    • Journal Title

      映像情報メディカル 37巻4号

      Pages: 388-392

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Topics on monitor for imaging diagnosis2005

    • Author(s)
      Takeo Ishigaki
    • Journal Title

      Medical Imaging & Information 37(4)

      Pages: 388-392

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] モニタ診断2003

    • Author(s)
      石垣武男
    • Journal Title

      日独医報 48(1)

      Pages: 51-60

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Imaging Diagnosis with Monitor2003

    • Author(s)
      Takeo Ishigaki
    • Journal Title

      Nichidoku-Iho 48(1)

      Pages: 51-60

    • Description
      「研究成果報告書概要(欧文)」より

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Published: 2007-12-13  

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