Which two aspects are monitored monthly for film processing QC?

• A. 1 and 2
• B. 1 and 3
• C. 2 and 3
• D. 1, 2, and 3

Answer: (D)

Monthly film processing QC is about keeping every part of the development chain in check to ensure consistent image quality. You need to look at three key areas: chemical activity, the timing and temperature of the processor, and the actual output in terms of density and contrast.

Chemical activity tells you whether the developer and fixer are performing at the correct strength and that replenishment is appropriate. Timing/temperature checks confirm the film spends the correct amount of time in the developer at the proper temperature, so development isn’t under- or over-processed. Density and contrast checks verify that the processed film produces the expected optical density range and uniformity across the film, which reflects all previous steps working together.

If any of these drift, image quality will change over time, so monthly QC usually includes all three areas to catch gradual changes before they affect diagnostic quality.