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

Tahereh Niknejad, Marco Pizzichemi, Gianluca Stringhini, Etiennette Auffray, Ricardo Bugalho, Jose Carlos Da Silva, Agostino Di Francesco, Luis Ferramacho, Paul Lecoq, Carlos Leong, Marco Paganoni, Manuel Rolo, Rui Silva, Miguel Silveira, Stefaan Tavernier, Joao Varela, Carlos Zorraquino

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)684-688
JournalNuclear Instruments and Methods in Physics Research Section A
Publication statusPublished - 11 Feb 2017

Bibliographical note

Proceedings of the Vienna Conference on Instrumentation 2016


  • Positron emission tomography, Positron emission mammography, Small animal PET, Depth of interaction, Time of flight


Dive into the research topics of 'Development of high-resolution detector module with depth of interaction identification for positron emission tomography'. Together they form a unique fingerprint.

Cite this