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 1.53×1.53×15 mm3 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 (50 ps time binning). The results show an excellent crystal identification for all the scintillators in the matrix, a timing resolution of 530 ps, an average DOI resolution of 5.17 mm FWHM and an average energy resolution of 18.29% FWHM.

Niknejad, T., Pizzichemi, M., Stringhini, G., Auffray, E., Bugalho, R., Da Silva, J., et al. (2017). Development of high-resolution detector module with depth of interaction identification for positron emission tomography. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 845, 684-688 [10.1016/j.nima.2016.04.080].

Development of high-resolution detector module with depth of interaction identification for positron emission tomography

PIZZICHEMI, MARCO
Secondo
;
STRINGHINI, GIANLUCA;PAGANONI, MARCO;
2017

Abstract

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 1.53×1.53×15 mm3 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 (50 ps time binning). The results show an excellent crystal identification for all the scintillators in the matrix, a timing resolution of 530 ps, an average DOI resolution of 5.17 mm FWHM and an average energy resolution of 18.29% FWHM.
Articolo in rivista - Articolo scientifico
Depth of interaction; Positron emission mammography; Positron emission tomography; Small animal PET; Time of flight; Nuclear and High Energy Physics; Instrumentation
English
684
688
5
Niknejad, T., Pizzichemi, M., Stringhini, G., Auffray, E., Bugalho, R., Da Silva, J., et al. (2017). Development of high-resolution detector module with depth of interaction identification for positron emission tomography. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT, 845, 684-688 [10.1016/j.nima.2016.04.080].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/153058
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