contrast, radiographic

contrast, radiographic (radiographic image),

n the differences in photographic or film density produced on a radiograph by structural composition of the object radiographed or by varying amounts of radiation.

contrast, radiographic, long-scale,

n an increased number of gradations of gray between the blacks and whites on a radiograph. Higher kilovoltages increase the scale of contrast.

contrast, radiographic, media,

n See radiograph, contrast media.

contrast, radiographic, short-scale,

n a minimum number of gradations of gray between the blacks and whites on a radiograph. Lower kilovoltages decrease the scale of contrast.