American Registry of Radiologic Technologists (ARRT) Practice Exam

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Become a certified radiologic technologist by preparing for the ARRT exam. Use flashcards and multiple-choice questions, complete with hints and explanations, to get exam-ready!

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What is the NCRP recommended annual occupational full body dose limit?

5 rem
50 mSv
5000 mrem
10 rem

The correct answer is: 5 rem

The NCRP, or National Council on Radiation Protection and Measurements, recommends an annual occupational dose limit of 5 rem for radiation workers. This guideline is established with the goal of minimizing health risks associated with occupational exposure to ionizing radiation while still allowing for the practices necessary in a variety of fields such as radiology, nuclear medicine, and radiation therapy. This limit serves to protect workers from the potential adverse effects of radiation exposure, balancing safety with the operational needs of professions that require the use of radiological equipment. Converting this to other units commonly used, 5 rem is equal to 50 mSv or 5000 mrem, which are also relevant figures in radiological contexts. However, the direct recommended limit remains 5 rem annually, making it the standard reference for such discussions. While the other values might appear valid through conversion, the NCRP formally specifies the 5 rem figure as the limit for radiologic professionals, ensuring a clear and consistent standard in occupational radiation protection.