The timer used in fluoroscopy:

The timer used in fluoroscopy:

• A. Should always be reset before the alarm sounds so that it does not annoy the radiologist
• B. Sounds an alarm after 3 minutes
• C. Is used to alert the fluoroscopist after 5 minutes of fluoroscopy scanning have elapsed
• D. Must be 3 minutes

Answer: (C)

In fluoroscopy, keeping track of how long the X-ray beam has been on is essential to limit radiation exposure. The timer on the fluoroscope serves as a safety reminder, typically sounding an audible alert after five minutes of continuous fluoroscopy. This prompts the fluoroscopist to pause, reduce dose, reposition, or switch to still imaging as needed, helping to adhere to ALARA principles. Resetting the timer before the alarm defeats this safety check, and a three-minute alert isn’t the standard practice, since five minutes provides a practical balance between procedural needs and dose control.

In fluoroscopy, keeping track of how long the X-ray beam has been on is essential to limit radiation exposure. The timer on the fluoroscope serves as a safety reminder, typically sounding an audible alert after five minutes of continuous fluoroscopy. This prompts the fluoroscopist to pause, reduce dose, reposition, or switch to still imaging as needed, helping to adhere to ALARA principles. Resetting the timer before the alarm defeats this safety check, and a three-minute alert isn’t the standard practice, since five minutes provides a practical balance between procedural needs and dose control.