The brightness of the image on a viewing monitor is determined by:

The brightness of the image on a viewing monitor is determined by the monitor function, which includes various settings and controls that affect how images are presented. This encompasses factors like contrast, brightness settings, gamma function, and the overall calibration of the monitor to ensure accurate display of medical images.

While image receptor exposure, tissue composition, and part thickness are significant factors in the quality of the image captured during the radiographic process, they primarily influence the initial data acquisition rather than the final image appearance on the display. Thus, the monitor's function plays a crucial role in interpreting this data by controlling how it is visually represented.