The fluoroscopy timer must provide a signal after how much fluoroscopic time?

• A. 3 minutes
• B. 5 minutes
• C. 7 minutes
• D. 10 minutes

Answer: (B)

The fluoroscopy timer is designed to enhance patient safety by monitoring the duration of fluoroscopic exposure. According to regulations and standards set by organizations such as the American College of Radiology (ACR) and the Radiological Society of North America (RSNA), the timer must emit a signal after a maximum of 5 minutes of continuous fluoroscopic exposure. This is to remind the operator to assess the necessity of ongoing fluoroscopy and to mitigate the potential risk of cumulative radiation exposure to the patient, ensuring that unnecessary prolonged exposure does not occur.

Understanding this regulation is crucial, not only for compliance with safety standards but also for the protection of patients undergoing diagnostic procedures using fluoroscopy.