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Radiological Physics and Technology
Published in: Radiological Physics and Technology 3/2017

01-09-2017

Effective luminance deterioration of medical liquid crystal displays in clinical use

Authors: Keita Takahashi, Shinichi Awamoto, Shinya Takarabe, Kazuhisa Ogawa, Yasuhiko Nakamura

Published in: Radiological Physics and Technology | Issue 3/2017

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Abstract

The objective of this work was to evaluate the maximum luminance (L max) level of medical liquid crystal displays (LCDs) as a function of backlight hours (BLH) annually. The L max values for 249 2-megapixel color LCDs (RadiForce RX210, EIZO Corporation) were measured in February 2014, 2015, and 2016. Four near-range luminance meters and the built-in type luminance meters, each with an LCD, were used for the measurements. The average and standard deviation (SD) of BLH measured in 2014 was 15,371 ± 8219 h. Four, twenty, and thirty-nine LCDs failed in the constancy tests performed in February 2014, 2015, and 2016, respectively, i.e., they were unable to output 170 cd/m2. The SD of L max increased each year and as BLH became longer. In conclusion, evaluation of L max as a function of BLH during constancy testing will help predict the decrease in L max of a clinically used medical color LCD.
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Metadata
Title
Effective luminance deterioration of medical liquid crystal displays in clinical use
Authors
Keita Takahashi
Shinichi Awamoto
Shinya Takarabe
Kazuhisa Ogawa
Yasuhiko Nakamura
Publication date
01-09-2017
Publisher
Springer Singapore
Published in
Radiological Physics and Technology / Issue 3/2017
Print ISSN: 1865-0333
Electronic ISSN: 1865-0341
DOI
https://doi.org/10.1007/s12194-017-0401-x

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