Answer the following statement(s) true (T) or false (F)

Question

1. Base plus fog density is the inherent density on a radiographic film that can be measured and recorded once the film has been processed
2. Increasing the OID results in a decrease in contrast.
3. Circular beam restriction is achieved through the use of cones and cylinders.
4. Decreasing mAs results in an increase in density.
5. Decreasing collimation results in a decrease in density.

Answer 1

1. TRUE The typical range for base plus fog density is approximately 0.100.20.
2. FALSE Increasing the OID increase film contrast.
3. TRUE Cones, cylinders, and aperture diaphragms are designed as to slide on and off a clip-like structure that lies just beneath the collimator box.
4. FALSE Decreasing mAs will result in a decrease in density.
5. FALSE Density increases with an increase in collimation.