J Opt Soc Am A Opt Image Sci Vis. 2024 Apr 1;41(4):581-587. doi: 10.1364/JOSAA.510989.
This study investigates the just-noticeable difference (JND) in luminance below the 0.050 / threshold not covered by the DICOM standard in medical imaging displays. A total of 21 healthy young adults were tested using an ultralow-luminance liquid crystal display at a viewing distance of 46 cm. The optotype featured a 4 cycle/deg rectangular wave-like stripe. The average percentage of correct responses for JND indices between -18 and 0 was 70.8%. Using the extended JND based on the Barten model that matches the current JND definition, we confirmed the JND at a very low luminance of 0.0500 / or less. These findings suggest the feasibility of further refining the gradation differences in medical imaging displays.
本研究旨在调查医学成像显示器中 DICOM 标准未涵盖的亮度下的 0.050 / 阈值以下的可察觉差（JND）。共有 21 名健康的年轻成年人在 46 厘米的观看距离下使用超低亮度液晶显示器进行了测试。视标采用 4 个周期/度的矩形波状条纹。JND 指数在-18 到 0 之间的平均正确响应百分比为 70.8%。使用基于符合当前 JND 定义的 Barten 模型的扩展 JND，我们确认了非常低的亮度 0.0500 / 或更低的 JND。这些发现表明进一步细化医学成像显示器的灰度差异是可行的。
