What is the primary purpose of the cumulative manual-reset timer in fluoroscopy?

The primary purpose of the cumulative manual-reset timer in fluoroscopy is to protect the patient from prolonged radiation exposure. This timer tracks the amount of time the fluoroscopic equipment is actively emitting radiation. By requiring the operator to manually reset the timer, it serves as a safeguard, ensuring that prolonged exposure does not occur without the operator being aware of it. This is crucial in minimizing unnecessary radiation exposure to the patient during procedures that use fluoroscopy.

The timer encourages the operator to remain vigilant about the duration of the procedure, prompting them to take corrective actions when the threshold limit is reached. This is an essential practice in radiology to prioritize patient safety while still allowing for necessary diagnostic imaging.