CAMRT Radiography Practice Exam

In what situation would intravenous contrast enhancement be indicated for a musculoskeletal examination?

1. Suspected tibial plateau fracture

2. Trauma

3. Detection of loose bodies

4. Suspected infection

The correct answer is: Suspected infection

Intravenous contrast enhancement is particularly indicated in the case of a suspected infection within the musculoskeletal system. When an infection, such as osteomyelitis, is suspected, contrast-enhanced imaging can significantly improve the diagnostic capability. The use of intravenous contrast helps to differentiate between normal and infected tissues, as infected areas typically exhibit increased perfusion and enhancement due to the inflammatory response that causes additional blood flow to the affected region. In circumstances like a suspected tibial plateau fracture or trauma, traditional imaging techniques such as plain X-rays or CT scans often suffice to assess the injury without the need for contrast. Similarly, while detecting loose bodies in a joint may require advanced imaging, it's generally done with techniques that don't necessitate contrast, such as MRI or CT without contrast. Thus, the use of intravenous contrast in the context of a suspected infection is vital because it provides critical information about tissue perfusion and can help delineate the extent of the infection, guiding treatment decisions effectively.