Visual assessment method of angular performance in medical liquid-crystal displays by use of the ANG test pattern: Effect of ambient illuminance and effectiveness of modified scoring

Yoichiro Ikushima, Junji Morishita, Hiroshi Akamine, Yasuhiko Nakamura, Noriyuki Hashimoto

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A visual assessment method of the angular performance in medical liquid-crystal displays (LCDs) by use of the "ANG test pattern" was proposed by Badano and the International Electrotechnical Commission. Our goals were to examine the effect of ambient illuminance on the visual assessment, and to investigate whether our modified visual assessment (with the ANG test pattern) can be used instead of the conventional assessment based on luminance measurements. As the ambient illuminance increased, the original scores obtained with the visual assessment decreased. The modified score of the visual assessment was in reasonable agreement with the results of the luminance-based assessment. We conclude that the visual assessment with the ANG test pattern should be performed in a room with constant ambient illuminance, and the modified visual assessment could have the potential to be used instead of the luminance-based assessment for quality assurance of medical LCDs.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalRadiological physics and technology
Volume7
Issue number1
DOIs
Publication statusPublished - Jan 1 2014

Fingerprint

Liquid Crystals
illuminance
scoring
liquid crystals
luminance
assurance
rooms

All Science Journal Classification (ASJC) codes

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

Cite this

Visual assessment method of angular performance in medical liquid-crystal displays by use of the ANG test pattern : Effect of ambient illuminance and effectiveness of modified scoring. / Ikushima, Yoichiro; Morishita, Junji; Akamine, Hiroshi; Nakamura, Yasuhiko; Hashimoto, Noriyuki.

In: Radiological physics and technology, Vol. 7, No. 1, 01.01.2014, p. 51-56.

Research output: Contribution to journalArticle

@article{b6aedbcd181e4770bed66d38e918d8f6,
title = "Visual assessment method of angular performance in medical liquid-crystal displays by use of the ANG test pattern: Effect of ambient illuminance and effectiveness of modified scoring",
abstract = "A visual assessment method of the angular performance in medical liquid-crystal displays (LCDs) by use of the {"}ANG test pattern{"} was proposed by Badano and the International Electrotechnical Commission. Our goals were to examine the effect of ambient illuminance on the visual assessment, and to investigate whether our modified visual assessment (with the ANG test pattern) can be used instead of the conventional assessment based on luminance measurements. As the ambient illuminance increased, the original scores obtained with the visual assessment decreased. The modified score of the visual assessment was in reasonable agreement with the results of the luminance-based assessment. We conclude that the visual assessment with the ANG test pattern should be performed in a room with constant ambient illuminance, and the modified visual assessment could have the potential to be used instead of the luminance-based assessment for quality assurance of medical LCDs.",
author = "Yoichiro Ikushima and Junji Morishita and Hiroshi Akamine and Yasuhiko Nakamura and Noriyuki Hashimoto",
year = "2014",
month = "1",
day = "1",
doi = "10.1007/s12194-013-0230-5",
language = "English",
volume = "7",
pages = "51--56",
journal = "Radiological Physics and Technology",
issn = "1865-0333",
publisher = "Springer Japan",
number = "1",

}

TY - JOUR

T1 - Visual assessment method of angular performance in medical liquid-crystal displays by use of the ANG test pattern

T2 - Effect of ambient illuminance and effectiveness of modified scoring

AU - Ikushima, Yoichiro

AU - Morishita, Junji

AU - Akamine, Hiroshi

AU - Nakamura, Yasuhiko

AU - Hashimoto, Noriyuki

PY - 2014/1/1

Y1 - 2014/1/1

N2 - A visual assessment method of the angular performance in medical liquid-crystal displays (LCDs) by use of the "ANG test pattern" was proposed by Badano and the International Electrotechnical Commission. Our goals were to examine the effect of ambient illuminance on the visual assessment, and to investigate whether our modified visual assessment (with the ANG test pattern) can be used instead of the conventional assessment based on luminance measurements. As the ambient illuminance increased, the original scores obtained with the visual assessment decreased. The modified score of the visual assessment was in reasonable agreement with the results of the luminance-based assessment. We conclude that the visual assessment with the ANG test pattern should be performed in a room with constant ambient illuminance, and the modified visual assessment could have the potential to be used instead of the luminance-based assessment for quality assurance of medical LCDs.

AB - A visual assessment method of the angular performance in medical liquid-crystal displays (LCDs) by use of the "ANG test pattern" was proposed by Badano and the International Electrotechnical Commission. Our goals were to examine the effect of ambient illuminance on the visual assessment, and to investigate whether our modified visual assessment (with the ANG test pattern) can be used instead of the conventional assessment based on luminance measurements. As the ambient illuminance increased, the original scores obtained with the visual assessment decreased. The modified score of the visual assessment was in reasonable agreement with the results of the luminance-based assessment. We conclude that the visual assessment with the ANG test pattern should be performed in a room with constant ambient illuminance, and the modified visual assessment could have the potential to be used instead of the luminance-based assessment for quality assurance of medical LCDs.

UR - http://www.scopus.com/inward/record.url?scp=84896032868&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84896032868&partnerID=8YFLogxK

U2 - 10.1007/s12194-013-0230-5

DO - 10.1007/s12194-013-0230-5

M3 - Article

C2 - 23934325

AN - SCOPUS:84896032868

VL - 7

SP - 51

EP - 56

JO - Radiological Physics and Technology

JF - Radiological Physics and Technology

SN - 1865-0333

IS - 1

ER -