Radiology Practice Test

What is fluoroscopy used for in radiology?

1. To create static images of fractures

2. To obtain real-time moving images of internal structures

3. To measure bone density

4. To assess tissue viability

The correct answer is: To obtain real-time moving images of internal structures

Fluoroscopy is a radiological technique that utilizes X-rays to produce real-time moving images of internal structures, which is essential for various diagnostic and interventional procedures. This technique allows clinicians to visualize the function and movement of organs and systems in the body, such as the gastrointestinal tract or the heart, while they are operational. For instance, during a fluoroscopic examination, a contrast agent might be administered to enhance visibility, allowing physicians to observe the movement of the contrast through the organs in real time. This capability is crucial for assessing dynamic processes, such as swallowing, the motion of the heart, or the flow of blood in vessels, which static images cannot provide. Other options address different imaging modalities or assessments: creating static images is more in line with conventional X-ray or MRI techniques; measuring bone density typically involves dual-energy X-ray absorptiometry (DXA); and tissue viability assessments often rely on other imaging techniques or tests rather than fluoroscopy alone. Hence, the unique ability of fluoroscopy to render live images makes it integral for various diagnostic applications in radiology.