Scattered radiation at 1 m from the patient during fluoroscopy is approximately what percentage of the entrance dose?

In fluoroscopy, scattered radiation occurs when x-rays interact with the patient and are deflected in different directions. The percentage of scattered radiation at a distance of 1 meter from the patient is a critical factor in understanding radiation protection and safety during procedures.

The correct answer indicates that the level of scattered radiation at this distance is approximately 0.1% of the entrance dose. This statistic is significant because it informs clinicians and health professionals about the extent of radiation exposure to personnel or patients not directly in the primary beam. Knowing that scattered radiation remains relatively low at a distance allows for better planning of shielding and protection measures.

In practice, this means that while the entrance dose to the patient might be relatively high, the exposure from scatter decreases significantly with distance. This relationship plays a vital role in clinical settings, helping to establish safety protocols and ensuring that everyone is aware of radiation levels in the environment surrounding fluoroscopy.

Other percentages given in the choices do not accurately represent the level of scattered radiation observed in practice at that distance. Understanding this concept reinforces the principles of radiation protection, reinforcing the need for proper shielding and maintaining an appropriate distance from the source of scatter during fluoroscopic procedures.