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Development of a boron imaging method for BNCT using CdTe-DSD

Chiu, I.-H.; 大澤 崇人  ; 墨田 岳大*   ; 池田 瑞*; 二宮 和彦*; 武田 伸一郎*; 南 喬博*; 高橋 忠幸*; 渡辺 伸*

Chiu, I.-H.; Osawa, Takahito; Sumita, Takehiro*; Ikeda, Mizuha*; Ninomiya, Kazuhiko*; Takeda, Shinichiro*; Minami, Takahiro*; Takahashi, Tadayuki*; Watanabe, Shin*

Boron neutron capture therapy (BNCT) is a neutron-based cancer treatment requiring real-time $$^{10}$$B dose monitoring for optimal effectiveness. We demonstrate the use of a cadmium telluride double-sided strip detector (CdTe-DSD) for precise boron imaging, offering a few keV energy resolution (FWHM) in the hundred-keV range and 0.25 mm spatial resolution. Using a pinhole collimator, our experiment at JRR-3 measured the $$^{10}$$B distribution in a solid sample containing 0.3 mg of $$^{10}$$B under neutron exposure. Despite gamma-ray background from $$^{113}$$Cd, we obtained an 11.5 mm diameter projection image with a 0.115 cps counting rate. These results highlight the CdTe-DSD's potential to enhance BNCT by providing high-fidelity $$^{10}$$B distribution insights.

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