Which of the following is a common protective device used in radiology?

In radiology, protective devices are essential for minimizing exposure to ionizing radiation during imaging procedures. The use of aprons is widespread because they are specifically designed to shield vital organs from radiation that can scatter during radiographic examinations. These lead-lined aprons are effective at absorbing radiation, thus reducing the risk of harmful effects on both patients and healthcare workers.

While helmets, goggles, and appliances may serve various functions in different contexts, they do not possess the specialized properties required to protect against the specific dangers posed by radiation exposure in a clinical setting. Helmets and goggles are more commonly associated with protection in other fields, such as construction or certain sports, rather than in radiology. Appliances, depending on their nature, may not provide any protective features against radiation. Therefore, aprons remain the most relevant and recognized protective device in radiology.