Measurement of energy and timing resolution of very highly pixellated LYSO crystal blocks with multiplexed SiPM readout for use in a small animal PET/MR insert

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DOIResolve DOI: http://doi.org/10.1109/NSSMIC.2013.6829134
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TypeArticle
Proceedings title2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)
Conference2013 IEEE Nuclear Science Symposium and Medical Imaging Conference, October 27-November 2 2013, Seoul, Korea (South)
ISSN1082-3654
ISBN978-1-4799-0534-8
978-1-4799-0533-1
978-1-4799-3423-2
Pages15
SubjectPET; Silicon photo-multiplier; Small Animal PET insert for MRI scanner
AbstractArrays of silicon photo-multipliers (SiPMs) are good candidates for the readout of detectors in PET MR inserts due to their high packing density, efficiency, low bias voltage and insensitivity to magnetic fields. In this study we report the readout performance of SensL SiPM arrays in terms of their ability to resolve all elements of pixellated lutetium oxy-orthosilicate (LYSO) crystals, and their energy and timing resolution. A SensL SB4-300-35-CER SiPM array consisting of sixteen 3 × 3 mm elements were used as light sensor. An LYSO crystal block consisting of 10×10 1.2 mm × 1.2 mm × 6.0 mm crystals on the bottom layer and 9×9 1.2 mm × 1.2 mm × 4.0 mm crystals on the top layer (which is offset by ½ the crystal width) was mounted on the SensL array, and covers over 95% of its area. A DPC encoding multiplexor with HDMI cable readout made by the Triumf Instrumentation group with a footprint suitable for allowing 16 modules to form a ring inside a Brooker 7T MR rodent imager was used as a readout. The HDMI cable supplies power, and provides readout of four channels and the device temperature. The average energy resolution for all 100 crystals in the lower layer was 11.3±1.8% and 10.8±1.2% for the 81 crystals in the upper layer. The average timing resolution for all 100 crystals in the lower layer was 2.52±0.23 nsec. and 2.55±0.23 nsec. for the 81 crystals in the upper layer.
Publication date
PublisherIEEE
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedYes
NPARC number23000558
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Record identifier840c9a46-52ce-4e86-8692-c229398595ad
Record created2016-07-29
Record modified2016-07-29
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