Pulsed fluoroscopy offers which of the following benefits?

• A. Increased patient dose
• B. Shortened tube life
• C. Extended tube life
• D. Higher dose per pulse

Answer: (C)

Pulsed fluoroscopy cuts radiation exposure by delivering X-rays in brief bursts rather than a continuous stream. That reduced heat load and lower instantaneous current on the X-ray tube means the tube experiences less thermal stress over time, which helps extend its life. In practice, this means the tube can operate longer before wear or overheating becomes a concern. The other ideas don’t fit: continuous exposure would raise patient dose, pulsed mode does not shorten tube life, and the dose per pulse is typically lower, not higher.