Which daily QC device should be evaluated to ensure film quality?

• A. processor sensitometer and densitometer
• B. film badge reader
• C. x-ray beam dosimeter
• D. calibration ruler

Answer: (A)

The daily test for film quality focuses on how the film responds after it goes through the processing system. A sensitometer provides a controlled, stepped exposure that creates a known reference on the film, and a densitometer then measures the optical densities of those steps. By comparing the measured densities to the expected values, you can detect changes in processor performance—like developer activity or temperature or processor replenishment—that would alter film contrast and density. This pair of tools directly verifies that the film processing path produces consistent, reliable images, which is why they are the best choice for daily film quality QC. The other devices test different things: a film badge reader is for personnel dosimetry, a beam dosimeter measures dose in the beam, and a calibration ruler is used for geometry or scaling—not for assessing film processing quality.