Abstract
This Project evaluated a human visual system model (JNDmetrix) based on just noticeable difference (JND) and frequency-channel vision-modeling principles to assess whether a Cathode ray tube (CRT) or a liquid crystal display (LCD) monochrome display monitor would yield better observer performance in radiographic interpretation. Key physical characteristics, such as veiling glare and modulation transfer function (MTF) of the CRT and LCD were measured. Regions of interest from mammographic images with masses of different contrast levels were shown once on each display to six radiologists using a counterbalanced presentation order. The images were analyzed using the JNDmetrix model. Performance as measured by receiver operating characteristic (ROC) analysis was significantly better overall on the LCD display (P = 0.0120). The JNDmetrix model predicted the result (P = 0.0046) and correlation between human and computer observers was high (r 2 (quadratic) = 0.997). The results suggest that observer performance with LCD displays is superior to CRT viewing, at least for on-axis viewing.
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Acknowledgment
This work was supported in part by grant R01 EB002119-04 from the National Institutes of Health (NIH/NIBIB).
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Krupinski, E.A., Johnson, J., Roehrig, H. et al. Use of a Human Visual System Model to Predict Observer Performance with CRT vs LCD Display of Images. J Digit Imaging 17, 258–263 (2004). https://doi.org/10.1007/s10278-004-1016-4
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DOI: https://doi.org/10.1007/s10278-004-1016-4