Which radiation protection principle requires that distance be maximized from the source of radiation?

The distance principle is a fundamental concept in radiation protection that emphasizes increasing the distance between a person and the source of radiation to minimize exposure. The rationale behind this principle is based on the inverse square law, which states that the intensity of radiation decreases with the square of the distance from the source. Therefore, by doubling the distance from the source of radiation, the exposure level is reduced to one-fourth. This principle is particularly important in medical imaging and radiation therapy, where healthcare professionals aim to limit their exposure while still providing effective care.

In practice, applying the distance principle means arranging workspaces and patient positioning to maximize the distance between personnel and radiation-emitting equipment. This approach significantly enhances safety, as it minimizes the risk of radiation exposure to both staff and patients. Understanding and implementing this principle are essential for anyone working in healthcare settings that involve radiation, ensuring compliance with safety protocols and regulations.