2021
Investigation of a Model-Based Time-Over-Threshold Technique for Phoswich Crystal Discrimination
Bouziri H, Pepin C, Koua K, Benhouria M, Paulin C, Ouyang J, Normandin M, Pratte J, Fakhri G, Lecomte R, Fontaine R. Investigation of a Model-Based Time-Over-Threshold Technique for Phoswich Crystal Discrimination. IEEE Transactions On Radiation And Plasma Medical Sciences 2021, 6: 393-403. PMID: 35372739, PMCID: PMC8974315, DOI: 10.1109/trpms.2021.3077412.Peer-Reviewed Original ResearchPulse shape discriminationCrystal identificationPhoswich detectorEnergy windowTime-over-threshold techniqueBroad energy windowCR-RC shaperCharge sensitive preamplifierFree running analogPhoswich assembliesLYSO scintillatorSensitive preamplifierCrystal discriminationAPD arraysShape discriminationEvent energyElectronic readoutTime of occurenceDecay timeLGSODetectorIncreasing pixelizationLYSODetection front endCrystal
2019
New Detector Designs for High Resolution Brain PET
Bläckberg L, Sajedi S, Fakhri G, Sabet H. New Detector Designs for High Resolution Brain PET. 2019, 00: 1-5. DOI: 10.1109/nss/mic42101.2019.9059785.Peer-Reviewed Original ResearchLaser induced optical barriersLYSO:Ce crystalsScintillation light spreadIntrinsic resolutionDetector designCe crystalsOptical barrierBrain positron emission tomographyScintillationCrystal thicknessPhotodetector elementsTransverse resolutionDetectorPositron emission tomographyPhotodetectorsImproved positionLYSOCrystalReadoutResolutionLaserDependenceEmission tomographyExploring light confinement in laser-processed LYSO:Ce for photon counting CT application
Bläckberg L, Sajedi S, Mandl S, Mohan A, Vittum B, Fakhri G, Sabet H. Exploring light confinement in laser-processed LYSO:Ce for photon counting CT application. Physics In Medicine And Biology 2019, 64: 095020. PMID: 30897557, PMCID: PMC7191943, DOI: 10.1088/1361-6560/ab1213.Peer-Reviewed Original ResearchConceptsLaser induced optical barriersPhoton counting detectorsLight collection efficiencyCrystal pixelsLYSO:Ce detectorsHigh dose efficiencyPixel arrayCounting detectorsDetector designDose efficiencyOptical barrierPd edgePhotodetector (PDRough interfaceIncreased cross-talkCE detectorCT applicationsDetectorLaser ablationPixel sizeConfinementSmooth ablationLYSOSpatial resolutionCollection efficiency
2018
Light Spread Manipulation in Scintillators Using Laser Induced Optical Barriers
Bläckberg L, Moebius M, Fakhri G, Mazur E, Sabet H. Light Spread Manipulation in Scintillators Using Laser Induced Optical Barriers. IEEE Transactions On Nuclear Science 2018, 65: 2208-2215. PMID: 30905974, PMCID: PMC6424510, DOI: 10.1109/tns.2018.2809570.Peer-Reviewed Original ResearchDepth of interactionOptical barrierLYSO:Ce detectorsDepth-of-interaction informationLYSO:CeHigh-resolution PET imagesRefractive indexResolution PET imagingScintillation lightScintillation detectorDetector edgesReadout configurationDetector typesMonolithic crystalsBarrier patternsCrystal bulkCE detectorScintillationDetectorLYSOLiOBPixel arrayPET imagingLaserLight transport simulation
2017
Simulation Study of Partially Laser-Processed LYSO:Ce with Single-Side Readout
Bläckberg L, Fakhri G, Sabet H. Simulation Study of Partially Laser-Processed LYSO:Ce with Single-Side Readout. 2017, 00: 1-4. DOI: 10.1109/nssmic.2017.8532855.Peer-Reviewed Original Research
2015
A Sub-MM Spatial Resolution LYSO: CE Detector for Small Animal PET
Sabet H, Bläckberg L, Ozsahin D, Sitek A, El-Fakhri G. A Sub-MM Spatial Resolution LYSO: CE Detector for Small Animal PET. 2015, 1-4. DOI: 10.1109/nssmic.2015.7582201.Peer-Reviewed Original ResearchLaser induced optical barriersOptical barrierLYSO:Ce crystalsIncident gamma raysLYSO:CeInter-pixel gapPixelated scintillatorLYSO crystalsPET detectorsPixelated crystalsCe crystalsGamma raysSub-mmMechanical pixelationLYSOCE detectorSimulation codeBarrier sizeAnimal PETHigh-spatial resolutionScintillationSmall-animal PETDetectorLaser energy densityEnergy density
2014
Novel Cost-Effective and High-Performance Modular Detectors for Emission Tomography Systems
Sabet H, El-Fakhri G. Novel Cost-Effective and High-Performance Modular Detectors for Emission Tomography Systems. 2014, 1-3. DOI: 10.1109/nssmic.2014.7430755.Peer-Reviewed Original ResearchLaser induced optical barriersScintillation light spreadIncident gamma raysInter-pixel gapEmission tomography systemSpatial resolutionScintillator arrayGamma raysOptical barrierMechanical pixelationAnimal PETCE arrayLow packing fractionScintillationSmall-animal PETTomography systemSPECT imagesCross-sectionPixel separationArray fabricationLYSOPacking fractionRaysResolutionProcess yield