The lnvention Radiation shielding container from Epoxy Resin mixed with Bismuth for Technetium -99m Radiopharmaceuticals

  • Wanwisa Thongcommak
  • Lapatlada doungkrat
  • Gunjanaporn Tochaikul
Keywords: Radiation shielding, Technetium-99m, Epoxy resin, Bismuth oxide


Currently, the radiation is widely used in medicine for both diagnosis and treatment. At the same time, radiation can also cause radiation hazards (i.e., hair loss, DNA damage) without a proper radiation shielding. Technetium-99m (99mTc) radiopharmaceutical is one of the most common types used in nuclear medicine The unsealed source like 99mTc is continuously emitted radiation, the radiation shielding material should be applied to protect the occupational and public populations. Lead element is the gold standard and commonly used for radiation protection devices. On the other hand, lead has some disadvantages like heavy and toxic. Therefore, this research purposed was to study an appropriate ratio for inventing a radiation shielding container from Epoxy Resin mixed with Bismuth oxide ( Bi2O3) 99mTc radiopharmaceuticals the sample was prepared by using a mixture of Epoxy Resin A with hardening substance at a ratio of 2:1 and stir for approximately 15 minutes. After that, Bi2O3 was added into a epoxy-resin with 0, 20, 30, 40 and 50 grams, then stir the mixture for15 to 30 minutes. Next step, pout mixing substance into octagonal and cylindrical silicone molds and leave it until the mixture is completely dry. To test the radiation shielding performance of the radiopharmaceuticals, Technetium-99m at activity 5, 10, and 20 mCi were used to simulated the clinical situation. The measurements were performed at 0, 50 and 100 cm with 0, 90, 180 and 270 degrees. Resulted revealed that our radiation shielding container was formed completely without brittle. Therefore, the researcher expects that the devices will provide the similary radiation shielding effectiveness to commercial lead radiation shielding devics.