Which of the following would not be considered a film artifact?

Filtration artifacts in radiography refer to any unwanted features or imperfections on a radiographic film that can obscure or distort the image being captured. The presence of different substances, environmental factors, or mishandling can create these artifacts.

Among the choices listed, sugar is not commonly associated with the film processing and imaging environment, meaning it would not be classified as a film artifact. Dust, film crimp, and light leaks are all well-documented issues that can arise during the film development or exposure process. For example, dust can settle on the film's surface, causing spots or lighter areas on the final image. A film crimp can occur from improper handling or transport of the film, leading to a deformation that appears as a line or shadow on the radiograph. Light leaks happen when unwanted exposure to light occurs, resulting in fogging or streaks on the film.

Thus, sugar, while it may affect food products or environments in other contexts, does not contribute to artifacts on radiographic film and is not relevant to the category of conditions affecting the integrity of radiographic images.