A preliminary study for exploring the luminance ratio of liquid-crystal displays required for display of radiographs

Shinya Takarabe, Junji Morishita, Hidetake Yabuuchi, Hiroshi Akamine, Noriyuki Hashimoto, Yasuhiko Nakamura, Yoshio Matsuo, Akiko Hattori

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Medical-grade liquid-crystal displays (LCDs) with high contrast ratio (CR) values have recently been developed and become available for soft-copy reading. When the LCD is used under ambient light conditions, the luminance ratio (LR) is a more appropriate indicator than the CR. Our aim was to explore the LR required for LCDs for soft-copy reading by comparing the effective LR values with the LR of the LCD. We defined "the luminance ratio in an image (LRimg)", the ratio of the maximum to minimum luminance in a radiograph displayed on the LCD, as the effective LR values required for the LCD. The maximum LRimg values in chest radiographs and those in mammograms ranged from 109 to 143 and 372 to 431, respectively. The LR of the LCD was higher than the LRimg values of the radiographs. Our results indicate that currently available medical-grade LCDs have enough LR for display of radiographs.

Original languageEnglish
Pages (from-to)73-78
Number of pages6
JournalRadiological physics and technology
Volume7
Issue number1
DOIs
Publication statusPublished - Jan 2014

All Science Journal Classification (ASJC) codes

  • Radiation
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Radiology Nuclear Medicine and imaging

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