Modelling of ToF-DOI detector arrays

摘要

The invention is directed to several crystal arrangements for time-of-flight (ToF) positron emission tomography (PET) with depth of interaction (DOI) encoding for high spatial, energy and timing resolution. Additionally, several implementations of the ToF-DOI PET detector arrays are proposed with related measurements which all show that no timing degradation is visible in the used setup for first photon trigger for digital silicon photo multipliers (dSiPMs).

主权项

1. A detector device comprising:
a) an assembly with a first layer of scintillation crystals for converting gamma radiation photon energy to light and a second layer of scintillation crystals for converting gamma radiation photon energy to light; b) a first light guide sandwiched between said second layer and said first layer and used for coupling said first and second layers so that the light coming from the second layer is distributed broader than the light originating from the first layer; c) a photo detector array for measuring the light generated in the scintillation crystals, said assembly being mounted with a second light guide onto said photo detector array, said second light guide being sandwiched between said photo detector array and said first layer and used for coupling said first layer and said photo detector array; and d) optical compartments forming a sub-structure of said scintillation crystals and covering side surfaces of said scintillation crystals by a reflective layer.