Multi-tracer imaging using CdTe -camera for studying molecular imaging for plant science

植物分子イメージング研究のためのCdTe半導体を用いた多核種同時イメージング装置の開発

河地 有木; 藤巻 秀; 鈴井 伸郎; 石井 里美; 石岡 典子; 松橋 信平; 佐藤 隆博; 渡辺 伸*; 武田 伸一郎*; 高橋 忠幸*; 飯田 靖彦*; 中野 隆史*

Kawachi, Naoki; Fujimaki, Shu; Suzui, Nobuo; Ishii, Satomi; Ishioka, Noriko; Matsuhashi, Shimpei; Sato, Takahiro; Watanabe, Shin*; Takeda, Shinichiro*; Takahashi, Tadayuki*; Iida, Yasuhiko*; Nakano, Takashi*

We have developed two imaging systems for plant science research, which images physiological processes in living systems noninvasively and quantitatively. One is the positron emitting tracer imaging system, which image the tracers of nutrients and pollutants in intact plants. In addition, for the numerical analysis of plant physiological functions, tracer kinetics have analyzed with simplified physiological model of test plants. The another is a prototype multi-element imaging system for plant study using CdTe semiconductor detector, which has high-energy resolution. The feasibility of this system for -ray emission imaging of radioactive multi-nuclide tracer was examined by imaging experiment with a plant. The distribution of the two tracers, technetium and thallium, fed to a tobacco plant was successfully visualized for each nuclide simultaneously. The presented imaging methods will yield plant molecular imaging, which visualizes dynamics of some competitive elements in intact plant, non-invasively and quantitatively.