In vivo study of Si/CdTe Compton imaging device

Yoshida, Yukari*; Shimada, Hirofumi*; Kawachi, Naoki; Takeda, Shinichiro*; Ishikawa, Shinnosuke*; Aono, Hiroyuki*; Suzuki, Yoshiyuki*; Sakurai, Hideyuki*; Watanabe, Shin*; Yamaguchi, Mitsutaka*; Watanabe, Shigeki; Takahashi, Tadayuki*; Arakawa, Kazuo; Nakano, Takashi*

We have developed a prototype Compton camera for medical imaging by using Si/CdTe semiconductor imaging devices. The high detection efficiency for -rays produced by radiation source in the medical imaging devices will improve quality of diagnostic radiological images using radiopharmaceuticals. The Si/CdTe Compton camera is a next-generation medical imaging device because it has good energy and position resolution, and high detection efficiency for -rays. Moreover, it can be used not only to detect the -rays produced by single radiation source, but also to detect the -rays produced by multiple radiation sources. To evaluate the performance of the Si/CdTe Compton camera for medical imaging, we made an experiment of in vivo by using rat and plural radiopharmaceutical.