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DOE OSTI · 1124656

High-Resolution PET Detector. Final report

Karp, Joel
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Abstract

The objective of this project was to develop an understanding of the limits of performance for a high resolution PET detector using an approach based on continuous scintillation crystals rather than pixelated crystals. The overall goal was to design a high-resolution detector, which requires both high spatial resolution and high sensitivity for 511 keV gammas. Continuous scintillation detectors (Anger cameras) have been used extensively for both single-photon and PET scanners, however, these instruments were based on NaI(Tl) scintillators using relatively large, individual photo-multipliers. In this project we investigated the potential of this type of detector technology to achieve higher spatial resolution through the use of improved scintillator materials and photo-sensors, and modification of the detector surface to optimize the light response function.We achieved an average spatial resolution of 3-mm for a 25-mm thick, LYSO continuous detector using a maximum likelihood position algorithm and shallow slots cut into the entrance surface.

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62 RADIOLOGY AND NUCLEAR MEDICINEPositron Emission Tomography (PET) Continuous scintillation detector

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Karp, Joel. 2014-03-26. High-Resolution PET Detector. Final report. https://doi.org/10.2172/1124656

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