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Abstract:
Positron Emission Tomography (PET) using time-of-flight information, which can greatly improve the quality of the reconstructed image, has recently become an exciting topic. In this work, 3.2 mm×3.2 mm× 25 mm finger-like LYSO crystals were used to make a 5×5 array, coupled to the Hamamatsu H8500 photomultiplier tube (PMT) as a detector. A fast leading-edge discriminator was designed for the LYSO-H8500 detector. Average coincidence time resolution FWHM of 330 ps was obtained for the LYSO detector with a reference BaF2 detector, whose time resolution for 511 keV γ -rays was FWHM 150 ps. Time resolution FWHM of 294 ps was calculated for the LYSO detector, and coincidence time resolution of FHWM 415 ps can be expected for two identical LYSO detectors.
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[1] |
Tetsuaki Moriguchi
, Momo Mukai
, Naoto Kaname
, Akira Ozawa
, Shinji Suzuki
, Yasushi Abe
, Hiroki Arakawa
, Tomoya Fujii
, Daiki Hamakawa
, Sakumi Harayama
, Shun Hosoi
, Yasuto Inada
, Kumi Inomata
, Reo Kagesawa
, Daisuke Kajiki
, Daiki Kamioka
, Masanori Kanda
, Atsushi Kitagawa
, Takaaki Kobayashi
, Daisuke Nagae
, Sarah Naimi
, Kunimitsu Nishimuro
, Shunichiro Omika
, Misaki Otsu
, Mamoru Sakaue
, Shinji Sato
, Hibiki Seki
, Naru Shinozaki
, Takeshi Suzuki
, Keisuke Tomita
, Takayuki Yamaguchi
, Yoshitaka Yamaguchi
, Asahi Yano
, Kenjiro Yokota
. Improvements of time-of-flight detector utilizing a thin foil and crossed static electric and magnetic fields. Chinese Physics C,
2025, 49(10): 104001.
doi: 10.1088/1674-1137/ade95b
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