Investigation of the time performance of a LYSO array for TOF-PET

LIU Jun-Hui; CHENG Jin-Xing; XU Jiong-Hui; CHENG Feng-Feng; LI Dao-Wu; ZHANG Zhi-Ming; WANG Bao-Yi; WEI Long

doi:10.1088/1674-1137/39/12/128201

Chinese Physics C> 2015, Vol. 39> Issue(12) : 128201 DOI: 10.1088/1674-1137/39/12/128201

Investigation of the time performance of a LYSO array for TOF-PET

LIU Jun-Hui ^1,2 ,
CHENG Jin-Xing ^1,2 ,
XU Jiong-Hui ³ ,
CHENG Feng-Feng ^4,5 ,
LI Dao-Wu ^1,2 ,
ZHANG Zhi-Ming ^1,2 ,
WANG Bao-Yi ^1,2 ,
WEI Long ^1,2

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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.
- Time-of-Flight PET ,
- PS-PMT ,
- LYSO ,
- leading-edge discriminator

References

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[4]	Kim C L. 2006 IEEE Nuclear Science Symposium Conference Record M06-136
[5]	Conti M et al. IEEE Trans. Nucl. Sci., 2009, 56(3): 926
[6]	Moszyn'ski M et al. IEEE Trans. Nucl. Sci., 2006, 53(5): 2484
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LIU Jun-Hui, CHENG Jin-Xing, XU Jiong-Hui, CHENG Feng-Feng, LI Dao-Wu, ZHANG Zhi-Ming, WANG Bao-Yi and WEI Long. Investigation of the time performance of a LYSO array for TOF-PET[J]. Chinese Physics C, 2015, 39(12): 128201. doi: 10.1088/1674-1137/39/12/128201

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Received: 2014-06-25
Revised: 2015-06-30

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Supported by National Natural Science Foundation of China (10775149, 10805049), the Fundamental Research Funds for the Central Universities (2013NT10)

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沈阳化工大学材料科学与工程学院沈阳 110142

Investigation of the time performance of a LYSO array for TOF-PET

Received Date: 2014-06-25
Accepted Date: 2015-06-30
Available Online: 2015-12-20

Fund Project: Supported by National Natural Science Foundation of China (10775149, 10805049), the Fundamental Research Funds for the Central Universities (2013NT10)

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.