Ahnen, M, Becker, R, Buck, A et al. (20 more authors) (2018) Performance Measurements of the SAFIR Prototype Detector With the STiC ASIC Readout. IEEE Transactions on Radiation and Plasma Medical Sciences, 2 (3). pp. 250-258. ISSN 2469-7311
Abstract
The small animal fast insert for mRi (SAFIR) positron emission tomography insert was proposed for quantitative dynamic acquisition inside a preclinical 7T magnetic resonance imaging scanner to study kinetics of short-lived tracers. For this purpose, the SAFIR readout should be capable of handling high count rates and achieving excellent timing performance. We evaluated one of the available application specific integrated circuits (ASICs) for SiPM readout, namely SiPM timing chip (STiC) version 3.1. In this paper, we show the performances of the SAFIR PET detector with the STiC ASIC readout. The SAFIR PET detector consists of an 8 x 8 array of lutetium yttrium oxyorthosilicate 2.1 mm x 2.1 mm x 12 mm crystals coupled, with optical grease, to an 8 x 8 array of SiPMs with a 2.0 mm x 2.0 mm photo-sensitive area. Signals from the individual SiPM channels were digitized by the STiC ASIC. Hit's arrival time and time-over-threshold (TOT) were recorded into time stamps with 50.2-ps least significant bit. We obtained an average energy resolution of 18.5% full width at half maximum (FWHM) at 511-keV photopeak after TOT nonlinearity correction and an average coincidence resolving time resolution of 244-ps FWHM with time walk correction that satisfy our requirements specification on the detector performance.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | (c) 2018 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. |
Keywords: | Performance; photodetector technology; SiPM; small animal fast insert for mRi (SAFIR); SiPM timing chip (STiC) application specific integrated circuit (ASIC) |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Medicine and Health (Leeds) > School of Medicine (Leeds) > Leeds Institute of Cardiovascular and Metabolic Medicine (LICAMM) > Biomedical Imaging Science Dept (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 Mar 2019 13:15 |
Last Modified: | 13 May 2019 05:36 |
Status: | Published |
Publisher: | IEEE |
Identification Number: | 10.1109/TRPMS.2018.2797484 |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:143328 |