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- Title
8-bit or 11-bit monochrome displays--which image is preferred by the radiologist?
- Authors
Bender S; Lederle K; Weiss C; Schoenberg SO; Weisser G; Bender, Stephan; Lederle, Kai; Weiss, Christel; Schoenberg, Stefan O; Weisser, Gerald
- Abstract
<bold>Objectives: </bold>Vendors of medical displays promise a better diagnostic performance using 10- or 11-bit instead of 8-bit monochrome displays. We measured the gain of "Just Noticeable Difference" (JND) steps using high grayscale resolutions and evaluated the preference of radiologists regarding different aspects of image quality.<bold>Methods: </bold>The amount of JND steps was measured on a display using 8-, 10- and 11-bit Look Up Tables (LUT). Radiological images were presented simultaneously using an 8-bit and an 11-bit LUT, radiologists where asked to determine the better image presentation regarding quality parameters like sharpness, contrast and detectability of details.<bold>Results: </bold>The 10-bit technology realized more than twice the number of JND steps compared to an 8-bit LUT, an 11-bit LUT presented only few additional JND steps. The radiologists did not attest the higher grayscale resolution a better image quality, they regarded the 8-bit technology to show a better sharpness and contrast, although this had no impact on the detectability of details.<bold>Conclusions: </bold>Our measurements confirmed that the higher grayscale resolution results in a more complete visualization of image information. But radiologists partially judged this as a lack of sharpness and contrast and generally preferred the 8-bit display.
- Publication
European Radiology, 2011, Vol 21, Issue 5, p1088
- ISSN
0938-7994
- Publication type
journal article
- DOI
10.1007/s00330-010-2014-1