Chinese Physics C > 2011, Vol. 35 > Issue(1): 61-66 DOI: 10.1088/1674-1137/35/1/013

A TOF-PET prototype with position sensitive PMT readout

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Abstract：
A prototype of time-of-flight positron emission computed tomography (TOF-PET) has been developed for acquiring the coincident detection of 511 keV γ-rays produced from positron annihilation. It consists of two 80.5 mm×80.5 mm LYSO scintillator arrays (composed of 35×35 pixel finger crystals) with the position sensitive photomultiplier tubes R2487 as the readout. Each array is composed of 2 mm×2 mm×15 mm finger crystals and the average pixel pitch is 2.30 mm. The measured results indicate that the TOF information has the potential to significantly enhance the image quality by improving the noise variance in the image reconstruction. The best spatial resolution (FWHM) of the prototype for the pairs of 511 keV γ-rays is 1.98 mm and 2.16 mm in the xand ydirections, respectively, which are smaller than the average pixel pitch of 2.30 mm.

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CHEN Jin-Da, XU Hu-Shan, HU Zheng-Guo, TANG Bin, YUE Ke, YU Yu-Hong, ZHANG Xue-Heng, KONG Jie, ZANG Yong-Dong, WANG Jian-Song, SUN Zhi-Yu, GUO Zhong-Yan and A TOF-PET prototype with position sensitive PMT readout[J]. Chinese Physics C, 2011, 35(1): 61-66. doi: 10.1088/1674-1137/35/1/013

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Received: 2010-03-26
Revised: 2010-04-20

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通讯作者:陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

A TOF-PET prototype with position sensitive PMT readout

Received Date:2010-03-26

Accepted Date:2010-04-20

Available Online:2011-01-05

Abstract:A prototype of time-of-flight positron emission computed tomography (TOF-PET) has been developed for acquiring the coincident detection of 511 keV γ-rays produced from positron annihilation. It consists of two 80.5 mm×80.5 mm LYSO scintillator arrays (composed of 35×35 pixel finger crystals) with the position sensitive photomultiplier tubes R2487 as the readout. Each array is composed of 2 mm×2 mm×15 mm finger crystals and the average pixel pitch is 2.30 mm. The measured results indicate that the TOF information has the potential to significantly enhance the image quality by improving the noise variance in the image reconstruction. The best spatial resolution (FWHM) of the prototype for the pairs of 511 keV γ-rays is 1.98 mm and 2.16 mm in thexandydirections, respectively, which are smaller than the average pixel pitch of 2.30 mm.

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A TOF-PET prototype with position sensitive PMT readout

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A TOF-PET prototype with position sensitive PMT readout

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