Radiologic Technologist Practice Exam

When using protective lead glasses, what is the minimum lead equivalent required?

1. 0.5 mm

2. 0.75 mm

3. 1.0 mm

4. 1.5 mm

The correct answer is: 0.5 mm

When using protective lead glasses in radiologic settings, the minimum lead equivalent required is 0.5 mm. This level of lead equivalency is deemed sufficient to adequately shield the eyes from scatter radiation during diagnostic imaging procedures. Protecting the eyes is crucial, as they are particularly sensitive to radiation exposure. Lead glasses with this minimum lead equivalent provide a balance of protection while maintaining visibility and comfort for the radiologic technologist or patient. Thicker lead equivalents, such as 0.75 mm or higher, can provide additional protection but may not be necessary for standard clinical practices where 0.5 mm is generally sufficient. Therefore, the standardization of 0.5 mm lead equivalent in protective eyewear reflects a practical approach to safety in radiologic environments.