Why is distance important as a method of radiation protection?

• A. It increases exposure
• B. It decreases exposure
• C. It has no effect on exposure
• D. It complicates the scan

Answer: (B)

Distance is a fundamental principle in radiation protection because it directly influences the intensity of radiation exposure. As you increase the distance from the radiation source, the intensity of exposure decreases significantly. This is due to the inverse square law, which states that the intensity of radiation is inversely proportional to the square of the distance from the source.

For instance, doubling the distance from the source of radiation will reduce the radiation exposure to one-fourth of its original value. Therefore, maintaining an appropriate distance during procedures that involve ionizing radiation is crucial in minimizing radiation dose to both the patient and the technician. This principle emphasizes the importance of distance as an effective method for protecting individuals from unnecessary radiation exposure and enhancing safety protocols in radiological practices.