@article{oai:repo.qst.go.jp:00045165,
 author = {Nishikido, Fumihiko and Tsuda, Tomoaki and Yoshida, Eiji and Inadama, Naoko and Shibuya, Kengo and Yamaya, Taiga and Kitamura, Keishi and Takahashi, Kei and Ohmura, Atsushi and Murayama, Hideo and 錦戸 文彦 and 津田 倫明 and 吉田 英治 and 稲玉 直子 and 澁谷 憲悟 and 山谷 泰賀 and 北村 圭司 and 高橋 慧 and 大村 篤史 and 村山 秀雄},
 issue = {1},
 journal = {Nuclear Instruments & Methods in Physics Research Section A},
 month = {Oct},
 note = {We are developing a small animal PET scanner, "jPET-RD" to achieve high sensitivity as well as high spatial resolution by using four-layer depth-of-interaction (DOI) detectors. The jPET-RD is designed with two detector rings. Each detector ring is composed of six DOI detectors arranged hexagonally. The diameter of the field-of-view (FOV) is 8.8 cm, which is smaller than typical small animal PET scanners on the market now. Each detector module consists of a crystal block and a 256-channel flat panel position-sensitive photomultiplier tube. The crystal block, consisting of 32 x 32 x 4 crystal (4096 crystals, each 1.46 mm x 1.46 mm x 4.5 mm) and a reflector, is mounted on the 256ch FP-PMT.
\nIn this study, we evaluated the spatial resolution of reconstructed images with the evaluation system of two four-layer DOI detectors which consist of 32 x 32 x 4 LYSO (Lu: 98%, Y: 2%) crystals coupled on the 256ch FP-PMT by using RTV rubber. The spatial resolution of 1.5 mm was obtained at the center of the FOV by the filtered back projection. The spatial resolution, better than 2 mm in the whole FOV, was also achieved with DOI while the spatial resolution without DOI was degraded to 3.3 mm.},
 pages = {212--218},
 title = {Spatial resolution evaluation with a pair of two four-layer DOI detectors for small animal PET scanner: jPET-RD},
 volume = {584},
 year = {2007}
}