To evaluate the radiation shielding effect of ¹²⁵I radiation mask on radiation of ¹²⁵I patients after radioactive seed implantation.

From December 2015 to December 2017, 36 patients with adenoid cystic carcinoma of palate treated with ¹²⁵I radioactive seed implantation were randomly divided into control group (n=18) and experimental group (n=18) . The patients in control group were treated with distance protection and the patients in experimental group with ¹²⁵I radioactive seed implantation wore the mask. The radiation dosage of two groups of subjects with the radiation lengths of 0, 20 and 50 cm were monitored using radiation-proof apparatus.

We found that the radiation dose of mask group was significantly lower than that of the non-mask group (P<0.01) after ¹²⁵I radioactive seed implantation. After wearing the mask, the mean dose monitored after the operation was in accordance with the public limit of 2.5 μSv/h stipulated by the national standard.

The use of radiation masks can effectively reduce and shield the radiation of ¹²⁵I radioactive particles to the outside world after surgery, so the patients can communicate with the outside world and normal life, promote physical recovery, and the patient satisfaction can be improved.