TY - JOUR
T1 - Development of high-resolution detector module with depth of interaction identification for positron emission tomography
AU - Niknejad, Tahereh
AU - Pizzichemi, Marco
AU - Stringhini, Gianluca
AU - Auffray, Etiennette
AU - Bugalho, Ricardo
AU - Silva, Jose Carlos Da
AU - Francesco, Agostino Di
AU - Ferramacho, Luis
AU - Lecoq, Paul
AU - Leong, Carlos
AU - Paganoni, Marco
AU - Rolo, Manuel
AU - Silva, Rui
AU - Silveira, Miguel
AU - Tavernier, Stefaan
AU - Varela, Joao
AU - Zorraquino, Carlos
N1 - Proceedings of the Vienna Conference on Instrumentation 2016
PY - 2017/2/11
Y1 - 2017/2/11
N2 - We have developed a Time-of-flight high resolution and commercially viable detector module for the application in small PET scanners. A new approach to depth of interaction (DOI) encoding with low complexity for a pixelated crystal array using a single side readout and 4-to-1 coupling between scintillators and photodetectors was investigated. In this method the DOI information is estimated using the light sharing technique. The detector module is a 1.53×1.53×15mm3 matrix of 8×8 LYSO scintillator with lateral surfaces optically depolished separated by reflective foils. The crystal array is optically coupled to 4×4 silicon photomultipliers (SiPM) array and readout by a high performance front-end ASIC with TDC capability (50ps time binning). The results show an excellent crystal identification for all the scintillators in the matrix, a timing resolution of 530ps, an average DOI resolution of 5.17mm FWHM and an average energy resolution of 18.29% FWHM.
AB - We have developed a Time-of-flight high resolution and commercially viable detector module for the application in small PET scanners. A new approach to depth of interaction (DOI) encoding with low complexity for a pixelated crystal array using a single side readout and 4-to-1 coupling between scintillators and photodetectors was investigated. In this method the DOI information is estimated using the light sharing technique. The detector module is a 1.53×1.53×15mm3 matrix of 8×8 LYSO scintillator with lateral surfaces optically depolished separated by reflective foils. The crystal array is optically coupled to 4×4 silicon photomultipliers (SiPM) array and readout by a high performance front-end ASIC with TDC capability (50ps time binning). The results show an excellent crystal identification for all the scintillators in the matrix, a timing resolution of 530ps, an average DOI resolution of 5.17mm FWHM and an average energy resolution of 18.29% FWHM.
KW - Positron emission tomography, Positron emission mammography, Small animal PET, Depth of interaction, Time of flight
U2 - 10.1016/j.nima.2016.04.080
DO - 10.1016/j.nima.2016.04.080
M3 - Article
VL - 845
SP - 684
EP - 688
JO - Nuclear Instruments and Methods in Physics Research Section A
JF - Nuclear Instruments and Methods in Physics Research Section A
SN - 0168-9002
ER -