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RESEARCH PRODUCT
AX-PET: Concept, proof of principle and first results with phantoms
Franco MeddiUygar TunaH. KaganNeal H. ClinthorneJosep F. OliverP. WeilhammerA. BraemSteinar StapnesA. RudgeFrancesca Nessi-tedaldiThomas SchneiderC. CasellaFelicitas PaussGünther DissertoriE. NappiR. De LeoC. JoramE. ChesiP. SoleviJ. SeguinotWerner LustermannMagdalena RafecasUlla RuotsalainenViviana FantiL. DjambazovP. BeltrameD. SchinzelDieter RenkerE. Bollesubject
Coincidence modePhysicsbusiness.industryExtended sourcesSTRIPSIterative reconstructionConcept-basedWavelength shifterAvalanche photodiodeCoincidencelaw.inventionOpticslawCoincidence mode; Concept-based; Extended sourcesbusinessParallaxImage resolutionDiodedescription
AX-PET is a novel PET concept based on long crystals axially arranged and orthogonal Wavelength shifter (WLS) strips, both individually readout by Geiger-mode Avalanche Photo Diodes (G-APD). Its design was conceived in order to reduce the parallax error and simultaneously improve spatial resolution and sensitivity. The assessment of the AX-PET concept and potential was carried out through a set of measurements comprising individual module characterizations and scans in coincidence mode of point-like and extended sources. The estimated energy and spatial resolutions from point-like measurements are R FWHM =11.6% (at 511 keV) and 1.7–1.9 mm (FWHM) respectively as measured with point-like sources placed in different positions of the FOV. First results from scans of extended phantoms confirmed our expectations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-10-01 | IEEE Nuclear Science Symposuim & Medical Imaging Conference |