X-ray equipment. Radiographers preparing X-ray equipment for use in the radiology department of a hospital. The X-ray machine (upper left) emits X- rays downwards onto a patient who would be lying on the bed. The X-rays pass through the patient and cast an image onto film positioned beneath the examination bed (lower right). X-rays are electromagnetic waves that can penetrate soft tissues and are absorbed by bones or opaque contrast media, and therefore can be used to diagnose internal injuries and disorders.