A faint image with a lead foil pattern superimposed indicates which film condition?

• A. Scratched
• B. Fogged film
• C. Reversed film
• D. Splashed

Answer: (C)

The message this image conveys is that the film was placed backwards. The lead foil backing inside a film packet is there to absorb backscatter radiation and prevent fog on the radiograph. When the film is oriented correctly, the lead foil layer sits away from the x-ray beam and its pattern isn’t recorded. If the film is reversed, the x-ray beam passes through the foil first and the patterned imprint of that foil is captured on the emulsion, producing a faint, grid-like image superimposed on the radiograph. This appearance is characteristic of a reversed film.

This differs from other defects: scratches produce visible linear marks, fogging causes uniform darkening and reduced contrast, and “splashed” isn’t a standard term for film defects.