Which of the following best categorizes medical radiation in terms of annual exposure to the U.S. population?

The classification of medical radiation as representing approximately 11% of the annual exposure to the U.S. population is grounded in extensive studies on radiation sources. Medical radiation includes X-rays, CT scans, and radiation therapy, which contribute to the overall background radiation exposure that individuals receive.

This 11% figure is significant because it highlights the importance of medical imaging in diagnosing and treating medical conditions while also emphasizing the need for careful management and safety protocols to minimize unnecessary exposure. Understanding that a considerable portion of radiation exposure is attributable to medical procedures reinforces the importance of radiation safety practices in healthcare settings, particularly in dentistry where radiographs are routinely taken.

The other percentage options (10%, 20%, and 40%) do not accurately reflect the statistical data derived from studies on radiation exposure. The exact percentage is important for professionals in the field to adequately assess risk and implement safety measures effectively. By recognizing that medical radiation constitutes around 11% of the total exposure, health professionals can make informed decisions regarding patient care while consciously adhering to the principles of radiation safety.