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A novel method for calibration and monitoring of time synchronization of TOF-PET scanners by means of cosmic rays

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arxiv 1311.6152 v2 pith:C6AXJUA4 submitted 2013-11-24 physics.ins-det nucl-exphysics.med-ph

A novel method for calibration and monitoring of time synchronization of TOF-PET scanners by means of cosmic rays

M. Silarski , E. Czerwi\'nski , T. Bednarski , P. Moskal , P. Bia{\l}as , {\L}. Kap{\l}on , A. Kochanowski , G. Korcyl
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J. Kowal P. Kowalski T. Kozik W. Krzemie\'n M. Molenda Sz. Nied\'zwiecki M. Pa{\l}ka M. Pawlik L. Raczy\'nski Z. Rudy P. Salabura N.G. Sharma A. S{\l}omski J. Smyrski A. Strzelecki W. Wi\'slicki M. Zieli\'nski N. Zo\'n
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classification physics.ins-det nucl-exphysics.med-ph
keywords monitoringcalibrationmethodmethodstof-petallowscosmicnovel
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All of the present methods for calibration and monitoring of TOF-PET scanner detectors utilize radioactive isotopes such as e.g. $^{22}$Na or $^{68}$Ge, which are placed or rotate inside the scanner. In this article we describe a novel method based on the cosmic rays application to the PET calibration and monitoring methods. The concept allows to overcome many of the drawbacks of the present methods and it is well suited for newly developed TOF-PET scanners with a large longitudinal field of view. The method enables also monitoring of the quality of the scintillator materials and in general allows for the continuous quality assurance of the PET detector performance.

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