Technique in which x-rays are directed through the body to a fluorescent screen that displays internal structures in continuous motion?

• A. Radiography
• B. CT Scan
• C. MRI
• D. Fluoroscopy

Answer: (D)

Fluoroscopy uses a continuous X-ray beam that passes through the body and is captured on a fluorescent screen or monitor to produce a live video of internal structures in motion. This real-time imaging lets clinicians watch dynamic processes, such as swallowing, movement of contrast through the GI tract, or guidance of instruments during procedures. Unlike static radiographs, CT, or MRI, fluoroscopy provides ongoing visualization, so you can see how things move and function as they happen.