A radiograph that demonstrates small differences in density between adjacent areas. Long-scale contrast is a result of high kilovoltage peak (kVp). In dental radiography, for example, 80 to 90 kVp or higher is necessary to produce a radiograph with long scale contrast.
The implementation of an elevated Kv.P. range yields a diverse range of nine to 14 distinct shades of black and white. As a consequence, the resultant radiograph exhibits thorough penetration, rendering all areas prominently visible.