What typically causes linear artifacts on radiographic films?

Linear artifacts on radiographic films are most commonly associated with the use of a grid. Grids are designed to improve image quality by reducing the amount of scattered radiation that reaches the film. However, if a grid is misaligned or if there are imperfections in its design or construction, it can result in linear artifacts on the films. These artifacts often manifest as distinct lines or bands that are visible on the radiographs, significantly affecting the diagnostic quality of the images.

Using broader imaging techniques, while other factors such as the film itself, processing machines, or collators might contribute to various artifacts or issues in imaging, they do not typically result in linear patterns. In contrast, the specific geometric and mechanical properties of the grid make it a primary source of the linear artifacts observed in these types of radiographic films.