Analysis on the radiation level and protection in nuclear medicine department

[Objective] To describe the radiation dose level in different sites of nuclear medicine department. [Methods] The radiation dose level ofu -ray, α- ray and β - ray were tested . [Results] The v - ray radiation dose in different sites varies greatly ranging from 5. 5x10 - 9c. kg - 1. h - 1 to 360. 2x10 -9c.kg-1.h-1; β- ray radiation dose ranges from 0.11 Bq. cm - 2 to 0.29Bq. cm, while a - ray dose level is almost as low as ground level. [Conclusion] The highest radiation exposure site is radiology immunity room. On the other hand, then - ray radiation dose level surrounding the patients who have been injected radioactive isotope is also very high, this problem should be paid more attention. This paper also discussed about some methods on shielding the patients from radiation exposure.