Skip to main content
Log in

Effective luminance deterioration of medical liquid crystal displays in clinical use

  • Published:
Radiological Physics and Technology Aims and scope Submit manuscript

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.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Fig. 1
Fig. 2
Fig. 3
Fig. 4
Fig. 5

Similar content being viewed by others

References

  1. Silosky M, Marsh RM. Constancy of built-in luminance meter measurements in diagnostic displays. Med Phys. 2013;40(12):121902.

    Article  CAS  PubMed  Google Scholar 

  2. Takarabe S, Morishita J, Yabuuchi H, et al. A preliminary study for exploring the luminance ratio of liquid-crystal displays required for display of radiographs. Radiolphystechnol. 2014;7(1):73–8.

    Google Scholar 

  3. Lehmann W. Phosphor deterioration in fluorescent lamps. J ElectrochemSoc. 1983;130(2):426.

    Article  CAS  Google Scholar 

  4. Hellen-Halme K, Hellen-Halme B, Wenzel A. The effect of aging on luminance of standard liquid crystal display (LCD) monitors. Oral Surg Oral Med Oral Pathol Oral Radiol Endodontol. 2011;112(2):237–42.

    Article  Google Scholar 

  5. National Electrical Manufacturers Association (NEMA). Digital imaging and Communications in Medicine (DICOM) Part 14: grayscale standard display function PS 3.14 2011. Rosslyn, VA: NEMA.

  6. Japan Industries Association of Radiological Systems Standards (JESRA X-0093*A-2010): quality assurance (QA) guidelines for medical imaging display systems. Tokyo: Japan Industries Association of Radiological Systems; 2010. http://www.jira-net.or.jp/commission/system/04_information/files/JESRAX-0093-2010_e.pdf. Accessed 25 Jan 2017.

  7. American Association of Physicists in Medicine (AAPM) Task Group 18 Imaging Informatics Subcommittee. AAPM on-line report no. 03: assessment of display performance for medical imaging systems. College Park, MD: AAPM. http://www.aapm.org/pubs/reports/OR_03.pdf. Accessed 25 Jan 2017.

  8. Krupinski EA, Roehrig H, Fan J. Does the age of liquid crystal displays influence observer performance? Acad Radiol. 2007;14(4):463–67.

    Article  PubMed  Google Scholar 

Download references

Acknowledgements

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.

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Keita Takahashi.

Ethics declarations

Conflict of interest

We have no conflicts of interest to declare for this study.

Statement of human and/or animal rights

This article does not contain any studies with human participants or animals performed by any of the authors.

Informed consent

Informed consent was obtained from all individual participants included in the study.

About this article

Check for updates. Verify currency and authenticity via CrossMark

Cite this article

Takahashi, K., Awamoto, S., Takarabe, S. et al. Effective luminance deterioration of medical liquid crystal displays in clinical use. Radiol Phys Technol 10, 382–386 (2017). https://doi.org/10.1007/s12194-017-0401-x

Download citation

  • Received:

  • Revised:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s12194-017-0401-x

Keywords

Navigation