What is the extremities dose limit for radiation exposure?

The extremities dose limit for radiation exposure, specifically for the hands and forearms, is set at 50,000 mRem (or 50 rem) per year for radiation workers. This limit is established to protect individuals from the harmful effects of radiation while allowing for occupational exposure that may be necessary in certain medical and industrial settings. The higher dose limit for extremities compared to the whole body reflects the understanding that localized areas can tolerate a greater amount of radiation because they are not as critical to overall health compared to organs that are more sensitive to radiation effects. This is consistent with guidelines established by regulatory bodies such as the National Council on Radiation Protection and Measurements (NCRP).

Understanding this limit is crucial for professionals working in environments where radiation exposure is inevitable and helps ensure that safety practices are maintained to minimize risk while performing necessary procedures.