Final answer:
Lead aprons protect the radiographer from ionizing radiation during fluoroscopy by absorbing the radiation and preventing it from reaching the body.
Step-by-step explanation:
Lead aprons are worn during fluoroscopy to protect the radiographer from exposure to ionizing radiation. These aprons are made of lead to absorb and block the radiation from reaching the body, thereby reducing the risk of radiation-induced harm. Shielding, including lead aprons, is essential because it limits exposure to tissues that are not being imaged. Additionally, other measures to protect from radiation include standing at a distance behind a lead-lined door with a lead glass window or using fast films that require a shorter exposure time, reducing the overall radiation dose to the patient and technician.