DICOM GSDF Based Calibration Method of General LCD Monitor for Medical Softcopy Image Display

With the extensive utilization of medical softcopy image display systems, the display quality of softcopy image may introduce some unexpected effects on the accuracy of diagnosis. Although high-end medical monitor is good at softcopy image display, general monitors are widely used in developing country like China for their affordable cost. In this article, the monitor's luminance response curve was used for calibration, so that the monitor could offer full compliance with the grayscale standard display function (GSDF) defined in digital imaging and communications in medicine (DICOM) Part 14. Unlike high-end medical monitor, the calibration method presented, which used DICOM GSDF and just noticeable differences (JND) as basis, was not achieved by adjusting the lookup table (LUT) of the display adapter installed in computer but the one in the monitor itself. Results indicated that the calibration method of the monitor was adapter/computer independent and its performance could be improved.