Time of flight measurements based on FPGA and SiPMs for PET-MR

被引：7

作者：

Aguilar, Albert ^{[1
]}

Garcia-Olcina, Raimundo ^{[1
]}

Martinez, Pedro A. ^{[1
]}

Martos, Julio ^{[1
]}

Soret, Jesus ^{[1
]}

Torres, Jose ^{[1
]}

Benlloch, Jose M. ^{[2
]}

Gonzalez, Antonio J. ^{[2
]}

Sanchez, Filomeno ^{[2
]}

机构：

[1] Univ Valencia, Commun & Digital Syst Design Grp DSDC, E-46003 Valencia, Spain

[2] Univ Politecn Valencia, CSIC, CIEMAT, I3M, Valencia, Spain

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2014年 / 734卷

关键词：

Time of flight; Silicon photomultipliers; Time-to-digital converter; Field programable gate array; Positron emission tomography and magnetic resonance;

D O I：

10.1016/j.nima.2013.09.008

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Coincidence time measurements with SiPMs have shown to be suitable for PET/MR systems. The present study is based on 3 x 3 mm(2) SiPMs, LSO crystals and a conditioning signal electronic circuit. A Constant Fraction Discriminator (CFD) is used to digitalize the signals and a TDC FPGA-implemented is employed for fine time measurements. TDC capability allows processing the arrival of multiple events simultaneously, measuring times under 100 ps. The complete set-up for time measurements results on a resolution of 892 +/- 41 ps for a pair of detectors. The details of such implementation are exposed and the trade-offs of each configuration are discussed. (C) 2013 Elsevier By, All rights reserved,

引用

页码：127 / 131

页数：5

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