Speaker
Takuya FUJITA
(Waseda University)
Description
In conventional PET scanners, spatial resolution deteriorates near the edges of the field of view due to the uncertain depth of interaction (DOI) within thick detectors. In our previous study, we reported the novel design of a gamma-ray detector that can measure DOI information. This detector was based on a segmented $3$-D scintillator array composed of $0.8 \times 0.8 \times 5$-mm$^3$ Ce-doped Gd$_3$Al$_2$Ga$_3$O$_1{}_2$ (Ce:GAGG) crystals and two large-area monolithic Multi-Pixel Photon Counter (MPPC) arrays coupled to both ends of the scintillator array. Moreover, the detector showed good energy resolution of $11.8\%$ and clear separation of each crystal at energy of $662$keV. In this research, we developed a one-pair coincidence system using $3$-D scintillator arrays composed of $1 \times 1 \times 3$-mm${}^{3}$ Ce:GAGG crystals to simulate a PET gantry, and evaluated the influence of DOI information on spatial resolution.
Author
Takuya FUJITA
(Waseda University)
Co-authors
Aya KISHIMOTO
(Waseda University)
Jun Kataoka
(Waseda University)
Takanori TAYA
(Waseda University)
Toru Nishiyama
(Waseda University)
Tsubasa OHSHIMA
(Waseda University)
Yohta KUREI
(Waseda University)
