Ionizing radiation protection for operator during ¹²'5I seeds source interstitial implantation

It is necessary to search for the proper ionizing radiation protecting method on operating ¹²⁵I seeds source interstitial implantation. The monitor results of ionizing radiation for ¹²⁵I seeds source interstitial implantation during the stages of operation are described. The radiation dose that doctor may suffered under non-protect condition is evaluated. The radiation exposure to operator is 70 μSv for the 40 pills seeds source of 925 MBq total activity during the whole procedure, such as opening the container, checking and installing the ¹²⁵I seeds source under the 30 cm operating distance and 10 min. It is estimated to operating doctor for one case that the radiation exposure is 184 μSv. Four suggestions of ionizing radiation protection for this kind of operation were made. (authors)