Caballero rivista pdf4/15/2023 ![]() Moreover, the performance of monolithic scintillators tends to be compromised toward the crystal edges (border effect)ĭue to the strongest truncation of the LD in these areas. In both the pixelated and monolithic approaches, the gaps in between detectors decrease system sensitivity. ![]() Moreover, monolithic‐based designs allow one to accurately characterize the scintillation light distributions (LDs) and, thus spatial resolutions of 1 mm have already been obtained.Īs a consequence of all these features, a significant interest has grown over the recent years for using gamma‐ray scanners based on monolithic crystals for both academic and commercial purposes. Nevertheless, monolithic scintillators offer lower cost, higher sensitivity, and provide intrinsic depth‐of‐interaction (DOI) information of the gamma‐ray interaction within the scintillator, thus enabling the possibility to correct for parallax errors. Pixelated crystal configurations are the most extended configuration in positron emission tomography (PET) scanners, since it allows for a relatively easy pixel identification. ![]() The two most prevalent geometry configurations of scintillation crystals used on conventional gamma‐ray scanners are the pixelated and the monolithic.
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