What does radiation fog refer to?

Radiation fog refers specifically to the unwanted image exposure that results from scattered x-rays. In a radiographic context, scattered radiation occurs when x-rays collide with matter and change direction, which can happen as they pass through the patient and other objects in the environment. This scattered radiation can reach the film or digital detector, leading to a fogging effect that can obscure the details of the intended image.

Understanding this concept is critical for radiography, as it highlights the importance of proper shielding and collimation when performing x-ray procedures to minimize the impact of scatter on image quality.