CAMRT Radiography Practice Exam

By how much do you need to increase technical factors when imaging through a fiberglass cast?

1. 50% increase required

2. No change required

3. 25% decrease required

4. 100% increase required

The correct answer is: No change required

When imaging through a fiberglass cast, it is understood that fiberglass is relatively radiolucent compared to other materials, such as plaster. Therefore, no change in technical factors is typically required when performing radiographic imaging through a fiberglass cast. This is because fiberglass allows enough x-ray penetration to visualize the underlying anatomy adequately without necessitating an increase in exposure factors. On the other hand, if a cast were made of a more radiopaque material, such as plaster, the radiographer would need to adjust their technical factors accordingly to achieve the desired image quality. This scenario emphasizes the importance of understanding different materials' properties, as they can significantly impact imaging techniques.