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Proceedings Paper

The varying effects of ambient lighting on low contrast detection tasks
Author(s): Mark F. McEntee; Barbara Martin
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Paper Abstract

AIM: The aim of this study was to determine if there is a significant difference between the detection of low-contrast objects on 1MP review monitor and 3MP primary monitor. METHOD: The monitors compared were a 1MP NEC Multisync 1980SXi and a 3MP Barco Coronis MFGD 3420. The low-contrast detectability of these monitors was compared at a high ambient light setting (73 lx) equivalent to that of a ward or intensive care unit in the clinical setting and a low setting (20 lx) which reflected that used in reporting rooms in standard practice. The comparison was made using a CDRAD test tool and visualisation of nasogastric tubes and a central line. RESULTS: Image quality results for both the psychophysical and diagnostic performance test were substantially higher for the 3MP monitor than those obtained for the 1MP. Significant differences p≤0.000 existed between the IQF results for the 2 monitors. Image quality results were higher at the lower ambient light setting for both monitors. CONCLUSION: Contrast visualisation is significantly improved through the use of primary monitors. Review monitors are adequate for the visualisation of lines an NG tubes in low and high light settings.

Paper Details

Date Published: 23 February 2010
PDF: 11 pages
Proc. SPIE 7627, Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment, 76270N (23 February 2010); doi: 10.1117/12.843786
Show Author Affiliations
Mark F. McEntee, Univ. College Dublin (Ireland)
Barbara Martin, Beaumont Hospital (Ireland)

Published in SPIE Proceedings Vol. 7627:
Medical Imaging 2010: Image Perception, Observer Performance, and Technology Assessment
David J. Manning; Craig K. Abbey, Editor(s)

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