[15p-D311-1~14] 2.4 Medical application

[15p-D311-10] Development of a high-sensitivity Compton camera for ¹⁷⁷Lu radioactive contamination imaging

〇(M1)Hikari Tsukamoto^1,6, Hiroshi Muraishi¹, Ryoji Enomoto², Hideaki Katagiri³, Mika Kagaya⁴, Takara Watanabe⁵, Daisuke Kano⁵, Yusuke Watanabe¹ (1.Kitasato Univ., 2.ICRR, Univ. of Tokyo, 3.Ibaraki Univ., 4.NIT, Sendai College, 5.NCCHE, 6.Tokai Univ. Hospital)

Keywords:radionuclide therapy, radioactive contamination, Compton camera

Lutetium-177 oxodotreotide(¹⁷⁷Lu-Lutathera®) was approved for the treatment of neuroendocrine tumors in 2021. The dose of this radiopharmaceutical is 7.4 GBq per treatment, and relatively high levels of radioactivity are excreted in the urine until around 48 hours after injection. Therefore, it is important to take measures for radioactive contamination to prevent occupational exposure. So, we have developed a Compton camera specifically designed to image areas of radioactive contamination by ¹⁷⁷Lu. In this presentation, we report on the design of a Compton camera using Geant4 and the development of a prototype detector.