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Effect of angular performance on the chromaticity of grayscale images displayed on medical liquid-crystal displays

Radiological Physics and Technology volume 6, pages 61–69 (2013)Cite this article

Abstract

Although variation of chromaticity in medical liquid-crystal displays (LCDs) has created interest in the quality assurance and quality control of display devices for medical use, it is unknown how chromaticity varies with the viewing angle. Our aims in this study were to investigate the variations of chromaticity in grayscale images displayed on medical LCDs depending on viewing angles, and to examine color discrimination at different viewing angles. Variations in chromaticity, Δu′v′, between 0° and each viewing angle (−60° to +60°) were investigated. The chromaticity of each LCD varied as the viewing angle changed. We examined confidence levels of color discrimination at different viewing angles by rotating the LCD for ten observers. When the viewing angle and variation in chromaticity increased, the confidence levels of color discrimination increased. Our results indicated that observers, such as radiologists and radiological technologists, could recognize variation in chromaticity at different viewing angles.

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Acknowledgments

The authors are grateful to Kunio Doi, Ph.D. (The University of Chicago, Gunma Prefectural College of Health Sciences), and Fukai Toyohuku, Ph.D. (Kyushu University), for useful discussions and to Yoichiro Ikushima, R. T., Shinya Takarabe, R. T., Norisato Tsuda, R. T., Risa Toge, R. T., Shogo Tokurei, R. T., Ishii Kaori, B.Sc., Yudai Yano, B.Sc., Michiro Aoki, R. T., Yuichi Murakami, R. T., and Yuki Yano, R. T., for participating in this study as observers. We are grateful to the Editorial Assistant of this journal, Mrs. Lanzl, for providing initial polishing and final polishing of the submitted manuscript in improving the readability and English expressions and to the Editors and reviewers for giving us useful comments and suggestions for improving our manuscript.

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Affiliations

  1. Department of Health Sciences, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan

    Hiroshi Akamine & Michinobu Matsuyama

  2. Department of Radiology, Kyushu University Hospital, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan

    Yasuhiko Nakamura

  3. Eizo Nanao Corporation, 153 Shimokashiwano, Hakusan, Ishikawa, 924-8566, Japan

    Noriyuki Hashimoto

  4. Department of Health Sciences, Faculty of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan

    Junji Morishita & Hidetake Yabuuchi

Authors
  1. Hiroshi Akamine
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  2. Junji Morishita
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  3. Michinobu Matsuyama
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  4. Noriyuki Hashimoto
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  5. Yasuhiko Nakamura
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  6. Hidetake Yabuuchi
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Corresponding author

Correspondence to Hiroshi Akamine.

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Akamine, H., Morishita, J., Matsuyama, M. et al. Effect of angular performance on the chromaticity of grayscale images displayed on medical liquid-crystal displays. Radiol Phys Technol 6, 61–69 (2013). https://doi.org/10.1007/s12194-012-0170-5

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  • DOI: https://doi.org/10.1007/s12194-012-0170-5

Keywords

  • Angular performance
  • Chromaticity
  • Color discrimination
  • Liquid-crystal display