May 17 – 20, 2015
La Biodola, Isola d'Elba
Europe/Rome timezone

Measurement of the Point Spread Function of a Pixelated Detector Array

May 20, 2015, 11:00 AM
1h 30m
Room Maria Luisa

Room Maria Luisa

Poster 1 - Advances in MR-PET instrumentation: detectors Session 11 - Poster Session II

Speaker

Christian Ritzer (Department of Physics of Molecular Imaging Systems, Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany)

Description

In order to further understand the PET/MRI scanner of our group, we measured the point spread function of a preclinical scintillation crystal array with a pitch of 1 mm and a total size of 30 mm × 30 mm × 12 mm. It is coupled via a lightguide to a dSiPM from Philips Digital Photon Counting, used on the TEK-setup. Crystal identification is done with a centre of gravity algorithm and the whole data analysis is performed with the same processing software as for the PET insert, giving comparable results. The beam is created with a 22 NA-Point-Source and a lead collimator, with 0.5 mm bore diameter. The algorithm sorted 62 % of the coincidences into the correct crystal.

Primary author

Christian Ritzer (Department of Physics of Molecular Imaging Systems, Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany)

Co-authors

Mr David Schug (Department of Physics of Molecular Imaging Systems, Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany) Mr Patrick Hallen (RWTH Aachen University) Prof. Volkmar Schulz (Department of Physics of Molecular Imaging Systems, Institute for Experimental Molecular Imaging, RWTH Aachen University, Aachen, Germany)

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