@misc{oai:repo.qst.go.jp:00068768,
 author = {Inadama, Naoko and Murayama, Hideo and Tsuda, Tomoaki and Nishikido, Fumihiko and Shibuya, Kengo and Yamaya, Taiga and Yoshida, Eiji and Takahashi, Kei and Ohmura, Atsushi and 稲玉 直子 and 村山 秀雄 and 津田 倫明 and 錦戸 文彦 and 澁谷 憲悟 and 山谷 泰賀 and 吉田 英治 and 高橋 慧 and 大村 篤史},
 month = {Nov},
 note = {Previously, we proposed an 8-layer depth-of- interaction (DOI)
encoding method for a PET detector and proved its validity. The layer of
interaction is identified by hybrid method; the scintillation light control
by the original reflector arrangement for 4-layer DOI encoding and the pulse
shape discrimination for 2-layer DOI encoding. Four layers then consist of
the scintillator of different pulse shape from the scintillator for the
other four layers.
      We investigated the effect of crystal arrangement difference on
detector performance to optimize the DOI detector. The two kind layers can
be arranged in two ways; stacked alternately or set in the upper and lower
four layers respectively. Since the two crystal arrangements are supposed to
show different detector performance, we measured it on each arrangement. The
results show better performance of the stacked arrangement in pulse shape
discrimination, while inferior in crystal identification among the same kind
scintillation crystals composing four layers. There was no particular
difference between the two crystal arrangements in light outputs and energy
resolutions of each layer., IEEE 2006 Nuclear Science Symposium and Medical Imaging Conference},
 title = {Optimization of Crystal Arrangement on 8-Layer DOI PET Detector},
 year = {2006}
}