What is the recommended focal film distance (FFD) for an AC joint x-ray?

For an AC joint x-ray, the recommended focal film distance (FFD) is typically around 39-38 inches. This distance allows for optimal image quality by minimizing geometric distortion and ensuring sufficient detail can be discerned in the structures being examined. In x-ray imaging, the focal film distance is crucial as it affects the magnification and sharpness of the radiograph. A distance that is too short may lead to increased distortion, while a distance that is too long can reduce the overall exposure of the film. By adhering to the recommended FFD of 39-38 inches for AC joint imaging, radiologic technologists can maximize the clarity and diagnostic utility of the x-ray.