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

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 min×25 mm finger-like LYSO crystals were used to make a 5×5 array, coupled to the Hamamatsu H8500 pho...

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Published inChinese physics C Vol. 39; no. 12; pp. 103 - 108
Main Author 刘军辉 程金星 徐炯辉 成枫锋 李道武 章志明 王宝义 魏龙
Format Journal Article
LanguageEnglish
Published 01.12.2015
Subjects
Arrays
Crystals
Detectors
FWHM
Image quality
Joining
Mathematical analysis
Positron emission
Tomography
光电倍增管
性能
探测器
时间信息
时间分辨率
正电子发射断层扫描
阵列
Online AccessGet full text
ISSN1674-1137
0254-3052
DOI10.1088/1674-1137/39/12/128201

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Summary: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 min×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 coinci- dence 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.
Bibliography: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 min×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 coinci- dence 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.
11-5641/O4
Time-of-Flight PET, PS-PMT, LYSO, leading-edge discriminator
LIU Jun-Hui, CHENG Jin-Xing,XU Jiong-Hui, CHENG Feng-Feng, LI Dao-Wu, ZHANG Zhi-Ming,WANG Bao-Yi, WEI Long（ 1 Institute of High Energy Physics, Beijing 100049, China 2 Beijing Engineering Research Center of Radiographic Techniques and Equipment, Beijing 100049, China 3 Qinshan Nuclear Power Station, Haiyan 314300, China 4 Key Lab of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University, Beijing 100875, China 5 Beijing Radiation Center, Beijing 100875, China）
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ISSN:1674-1137
0254-3052
DOI:10.1088/1674-1137/39/12/128201