TY - JOUR
T1 - Effective luminance deterioration of medical liquid crystal displays in clinical use
AU - Takahashi, Keita
AU - Awamoto, Shinichi
AU - Takarabe, Shinya
AU - Ogawa, Kazuhisa
AU - Nakamura, Yasuhiko
N1 - Funding Information:
This manuscript was partly supported by Akiyoshi Ohtsuka Fellowship of the Japanese Society of Radiological Technology for improvement in English expression of a draft version of the manuscript.
Publisher Copyright:
© 2017, Japanese Society of Radiological Technology and Japan Society of Medical Physics.
PY - 2017/9/1
Y1 - 2017/9/1
N2 - The objective of this work was to evaluate the maximum luminance (Lmax) level of medical liquid crystal displays (LCDs) as a function of backlight hours (BLH) annually. The Lmax 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 Lmax increased each year and as BLH became longer. In conclusion, evaluation of Lmax as a function of BLH during constancy testing will help predict the decrease in Lmax of a clinically used medical color LCD.
AB - The objective of this work was to evaluate the maximum luminance (Lmax) level of medical liquid crystal displays (LCDs) as a function of backlight hours (BLH) annually. The Lmax 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 Lmax increased each year and as BLH became longer. In conclusion, evaluation of Lmax as a function of BLH during constancy testing will help predict the decrease in Lmax of a clinically used medical color LCD.
UR - http://www.scopus.com/inward/record.url?scp=85018403821&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85018403821&partnerID=8YFLogxK
U2 - 10.1007/s12194-017-0401-x
DO - 10.1007/s12194-017-0401-x
M3 - Article
C2 - 28466128
AN - SCOPUS:85018403821
SN - 1865-0333
VL - 10
SP - 382
EP - 386
JO - Radiological Physics and Technology
JF - Radiological Physics and Technology
IS - 3
ER -