[15a-D209-1~10] 2.3 Application, radiation generators, new technology

[15a-D209-5] Omnidirectional gamma-ray imaging using a high-sensitivity rotating Compton camera

〇Hiroshi Muraishi¹, Ryoji Enomoto², Hideaki Katagiri³, Mika Kagaya⁴, Naofumi Narita³, Takara Watanabe⁵, Daisuke Kano⁵ (1.Kitasato University, 2.University of Tokyo, 3.Ibaraki University, 4.NIT, Sendai College, 5.NCCHE)

Keywords:Compton camera, radioactive contamination, medical physics

In this study, we are developing a high-sensitivity omnidirectional gamma-ray Compton camera using a crystal scintillator for the purpose of visualizing low-dose gamma-ray sources of less than 1μSv / h in nuclear medicine facilities, Fukushima field, and accelerator facilities. At a previous meeting, we reported that performing data acquisition while rotating the detector significantly improved systematic ghost structures in the background area of the omnidirectional reconstructed image. In this meeting, we will report on the results that can easily obtain a reconstructed image superior to the previous one even if the number of counters is reduced to only six by devising the detector arrangement.