| DOI | Trouver le DOI : https://doi.org/10.1109/NSSMIC.2012.6551717 |
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| Auteur | Rechercher : Thompson, Christopher J.; Rechercher : Goertzen, Andrew L.; Rechercher : Kozlowski, Poitr; Rechercher : Retiere, Fabrice; Rechercher : Stortz, Greg; Rechercher : Sossi, Vesna; Rechercher : Zhang, Xuezhu1 |
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| Affiliation | - Conseil national de recherches du Canada
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| Format | Texte, Article |
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| Conférence | 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record, NSS/MIC 2012, October 29 - November 3, 2012, Anaheim, CA, USA |
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| Sujet | positron emission tomography; silicon photo-multiplier; small animal PET insert for MRI scanner |
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| Résumé | Arrays 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 oxyorthosilicate (LYSO) crystals their energy resolution, and coincidence response function. Two SensL SPMarray-4 were used as light sensors. Two LYSO crystal blocks consisting of a arrays of 8×8 1.2 mm × 1.2 mm × 6.0 mm crystals on the lower layer and 7×7 1.2 mm × 1.2 mm × 4.0 mm crystals on the upper layer (which is offset by 1/2 the crystal width) were mounted on the SensL arrays. A second study was performed with single layer arrays of 8×8 1.2 mm × 1.2 mm × 10.0 mm crystals. All of the crystals in the dual layer block were easily identified with a peak to valley ratio of 7.2 while the single layer blocks had a peak to valley ratio of 11.2. The crystal dots were more uniformly spaced in the dual layer arrays suggesting that the inter-layer connection affords some useful light sharing. The average energy resolution for all 113 crystals was 16.3±2.3%. The coincidence response to a 0.25 mm Na-22 source in plastic was 0.97 ±0.12 mm for normally incident gamma rays with the detectors 120 mm apart. These results indicate that it should be possible to achieve a spatial resolution of about one millimetre near the center of the field of view. © 2012 IEEE. |
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| Date de publication | 2012 |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Numéro NPARC | 21270078 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 61a211a3-b5aa-4cd3-b9ad-130d4de9bc8b |
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| Enregistrement créé | 2013-12-19 |
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| Enregistrement modifié | 2020-04-21 |
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