Contrast (Procedural Factors) - Video Lesson

Hey, everybody. Welcome back. This lesson discusses the procedural factors that effect image contrast in radiography. First, some definitions. Image contrast refers to the visible difference in brightness levels on the radiograph. High contrast is generally preferable as this makes anatomical structures more easily visible. Proceed factors in this context simply refers to the variables that the technologists can control as a part of the exposure. The operator's choice of KVP, collimation, and grid ratio all have an effect on image contrast. Before we discuss this any further, you should know this. These procedural factors only have a small influence on image contrast. Why is that? Because computer processing algorithms are very good. At creating image contrast regardless of the operator selection. In digital radiography, computer processing