Suggestion of A Practical Simple Calculation Method for Safe Transportation Time after Radioactive Iodine Treatment in Patients with Thyroid Cancer

갑상선암 환자에서 방사성옥소치료 후 안전하게 이동할 수 있는 시간을 계산하기 위한 실용적인 간편계산법 제안

  • Received : 2015.02.10
  • Accepted : 2015.06.11
  • Published : 2015.06.30


When a patient with thyroid cancer is released from isolation after I-131 treatment and return to home using a vehicle, travel time should be controlled to reduce the amount of radiation to accompanying person. As the calculation of appropriate travel time is difficult, there is no patient-specific guideline until now. If we assume that there is no excretion and no physical decay during the relatively short travel time, calculation become quite simple; total radiation dose = dose rate ${\times}$ travel time. Results of this simple calculation and conventional calculation were compared using datum from 120 patients. Travel time calculated by simple method was 56% of conventional method in 0.3 m, 91% in 0.5 m and 96% in 1 m. Simple method was safe. It can be applied easily and also can be applied to the patients with hyperthyroidism treated by I-131.


I-131;radiation safety;thyroid cancer;treatment


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