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Design Considerations of Phoswich Detectors for High Resolution Positron Emission Tomography
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för material- och miljökemi (MMK), Avdelningen för oorganisk kemi och strukturkemi.
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2009 (engelsk)Inngår i: IEEE Transactions on Nuclear Science, ISSN 0018-9499, E-ISSN 1558-1578, Vol. 56, nr 1, s. 182-188Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A way to improve the spatial resolution in positron emission tomography (PET) is to determine the depth-of-interaction (DOI) in the detector. A way to achieve this is to use the phoswich approach, a detector with two or more layers of different scintitlators. The layer identification is done by using differences in scintillation decay time and pulse shape discrimination techniques. The advantages of the concept have been demonstrated in the HRRT high resolution PET system using a LSO/LYSO combination giving a high spatial resolution uniformity of around 2.5 mm within a larger part of the imaged volume. A phoswich combination that lately has received attention is LuAP/LSO or LuYAP/LSO. The suggestions come from the Crystal Clear Collaboration and there is a patent application for its use in PET. This particular combination of phoswich may, however, have a complication since both LuAP and LuYAP emit in the excitation band of LSO, thus making the functionality more complex. In the present paper we have looked into this and suggested different ways to overcome potential drawbacks.

sted, utgiver, år, opplag, sider
2009. Vol. 56, nr 1, s. 182-188
Emneord [en]
Inorganic scintillators, LSO, nuclear imaging, nuclear medical applications, positron emission tomography (PET), PET instrumentation, phoswich detectors, scintillation detectors, scintillation mechanisms, scintillators
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Identifikatorer
URN: urn:nbn:se:su:diva-60393DOI: 10.1109/TNS.2008.2010255ISI: 000263767700023OAI: oai:DiVA.org:su-60393DiVA, id: diva2:434740
Merknad
authorCount :6Tilgjengelig fra: 2011-08-16 Laget: 2011-08-16 Sist oppdatert: 2017-12-08bibliografisk kontrollert

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