What is the primary benefit of using pulsed fluoroscopy during long procedures?

• A. It increases frame rate and improves real-time detail.
• B. It eliminates the need for shielding.
• C. It reduces cumulative dose by delivering dose in pulses rather than continuous irradiation.
• D. It increases patient dose due to pulsed exposures.

Answer: (C)

The main idea is cutting the dose by exposing only in bursts rather than continuously. In long procedures, the patient accumulates radiation quickly with constant fluoroscopy. Pulsed fluoroscopy sends the X-ray beam in short, timed bursts with brief off periods, so the average dose over time drops. You keep enough frames to guide the procedure, but the overall exposure is reduced because the beam isn’t on nonstop. This approach lowers the cumulative dose while maintaining the necessary image information.

The other statements don’t fit because shielding remains important and is not eliminated by pulsing, pulsing does not inherently guarantee more frame rate or better real-time detail, and the aim is not to increase dose but to reduce it through the intermittent exposure.