A high resolution TOF-PET concept with axial geometry and digital SiPM readout
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Open access
Date
2014-02-01Type
- Journal Article
Abstract
The axial arrangement of long scintillation crystals is a promising concept in PET instrumentation to address the need for optimized resolution and sensitivity. Individual crystal readout and arrays of wavelength shifter strips placed orthogonally to the crystals lead to a 3D-detection of the annihilations photons. A fully operational demonstrator scanner, developed by the AX-PET collaboration, proved the potential of this concept in terms of energy and spatial resolution as well as sensitivity. This paper describes a feasibility study, performed on axial prototype detector modules with 100 mm long LYSO crystals, read out by the novel digital Silicon Photomultipliers (dSiPM) from Philips. With their highly integrated readout electronics and excellent intrinsic time resolution, dSiPMs allow for compact, axial detector modules which may extend the potential of the axial PET concept by time of flight capabilities (TOF-PET). A coincidence time resolution of 211 ps (FWHM) was achieved in the coincidence of two axial modules read out by dSiPMs, fully maintaining the demonstrated performance of the AX-PET detector. Show more
Permanent link
https://doi.org/10.3929/ethz-b-000076273Publication status
publishedExternal links
Journal / series
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated EquipmentVolume
Pages / Article No.
Publisher
ElsevierSubject
Positron emission tomography; PET; TOF-PET; LYSO; Digital SiPM; AX-PETOrganisational unit
03381 - Pauss, Felicitas (emeritus)
03593 - Dissertori, Günther / Dissertori, Günther
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