AI Article Synopsis
- The study assessed the maximum luminance levels of medical LCDs over three years, measuring 249 units to see how their brightness changed with usage hours.
- Measurements were taken using various luminance meters, revealing an average backlight usage of over 15,000 hours in 2014.
- Results indicated a yearly increase in luminance variability and a decline in performance, suggesting that tracking usage hours can help anticipate brightness reductions in clinical settings.
Article Abstract
The objective of this work was to evaluate the maximum luminance (L ) level of medical liquid crystal displays (LCDs) as a function of backlight hours (BLH) annually. The L 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/m. The SD of L increased each year and as BLH became longer. In conclusion, evaluation of L as a function of BLH during constancy testing will help predict the decrease in L of a clinically used medical color LCD.
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| http://dx.doi.org/10.1007/s12194-017-0401-x | DOI Listing |
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