2023
Impact of motion correction on [18F]-MK6240 tau PET imaging
Tiss A, Marin T, Chemli Y, Spangler-Bickell M, Gong K, Lois C, Petibon Y, Landes V, Grogg K, Normandin M, Becker A, Thibault E, Johnson K, Fakhri G, Ouyang J. Impact of motion correction on [18F]-MK6240 tau PET imaging. Physics In Medicine And Biology 2023, 68: 105015. PMID: 37116511, PMCID: PMC10278956, DOI: 10.1088/1361-6560/acd161.Peer-Reviewed Original ResearchConceptsMotion correctionPET quantitationImpact of motion correctionList-mode reconstructionMotion correction methodList-mode dataMotion-corrected imagesEffect of motion correctionVoxel displacementsPhantom experimentsOptical tracking dataLong acquisitionBrain PET scansSlow motionImage qualityPET imagingPositron emission tomographyCorrectionMotionCorrection methodRates of tau accumulationHead motionMotion metricsPhantomPositronSuper-resolution in brain positron emission tomography using a real-time motion capture system
Chemli Y, Tétrault M, Marin T, Normandin M, Bloch I, El Fakhri G, Ouyang J, Petibon Y. Super-resolution in brain positron emission tomography using a real-time motion capture system. NeuroImage 2023, 272: 120056. PMID: 36977452, PMCID: PMC10122782, DOI: 10.1016/j.neuroimage.2023.120056.Peer-Reviewed Original ResearchConceptsBrain positron emission tomographySuper-resolutionEvent-by-event basisReal-time motion capture systemSR reconstruction methodTracking cameraVisualization of small structuresPET reconstruction algorithmMoving phantomMeasure target motionLine profilesPET/CT scannerMeasured shiftsImprove image resolutionMotion capture systemMotion tracking devicePositron emission tomographyReconstruction algorithmSpatial resolutionMeasured linesPhantomReal-timeEstimation frameworkIncreased spatial resolutionReconstruction method
2013
Numerical Surrogates for Human Observers in Myocardial Motion Evaluation From SPECT Images
Marin T, Kalayeh M, Parages F, Brankov J. Numerical Surrogates for Human Observers in Myocardial Motion Evaluation From SPECT Images. IEEE Transactions On Medical Imaging 2013, 33: 38-47. PMID: 23981533, PMCID: PMC4148467, DOI: 10.1109/tmi.2013.2279517.Peer-Reviewed Original ResearchMeSH KeywordsAlgorithmsBiomimeticsCoronary Artery DiseaseExpert SystemsHumansImage EnhancementImage Interpretation, Computer-AssistedMotionMyocardial Perfusion ImagingObserver VariationReproducibility of ResultsSensitivity and SpecificitySupport Vector MachineTomography, Emission-Computed, Single-PhotonConceptsHuman observer performanceRelevance vector machinePredicting human observer performanceDeformable mesh modelHuman observersHuman observer scoresImage-quality assessmentPerfusion-defect detectionMotion estimationModel observerMotion featuresVector machineMedical imagesLinear discriminantDefect detectionDetection taskMesh modelObserver performanceDiagnostic tasksNumerical surrogateTask-based approachApproximate surrogateTaskMotion evaluationPerformance
2010
Deformable left‐ventricle mesh model for motion‐compensated filtering in cardiac gated SPECT
Marin T, Brankov J. Deformable left‐ventricle mesh model for motion‐compensated filtering in cardiac gated SPECT. Medical Physics 2010, 37: 5471-5481. PMID: 21089783, PMCID: PMC2962663, DOI: 10.1118/1.3483098.Peer-Reviewed Original ResearchConceptsCardiac gated SPECTMesh modelNoise reductionMotion-compensated filteringCardiac gated SPECT imagingDeformable mesh modelTested clinical dataSignal-to-noise ratioMotion estimationMotion blurring artifactsEstimated motionImage-reconstruction methodsProcessing algorithmsSpatiotemporal filtering methodSpatiotemporal filteringMotion trajectoryFiltering approachMyocardium motionFiltering methodReduce noiseImage qualityTemporal correlationProcessing techniquesNoisePhoton data
2009
Motion-compensated temporal summation of cardiac gated SPECT images using a deformable mesh model
Marin T, Wernick M, Yang Y, Brankov J. Motion-compensated temporal summation of cardiac gated SPECT images using a deformable mesh model. Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2009, 2009: 3657-3660. PMID: 19964313, PMCID: PMC2810283, DOI: 10.1109/iembs.2009.5333693.Peer-Reviewed Original ResearchMeSH KeywordsAlgorithmsCardiac-Gated Imaging TechniquesCardiac-Gated Single-Photon Emission Computer-Assisted TomographyComputer SimulationHeartHumansImage Processing, Computer-AssistedImaging, Three-DimensionalModels, StatisticalMotionPhantoms, ImagingRadiographic Image Interpretation, Computer-AssistedTomography, Emission-Computed, Single-PhotonConceptsDeformable mesh modelMotion blurring artifactsMesh modelCardiac gated SPECT imagingCardiac gated SPECTEstimating heart motionHeart motionNoisy imagesMotion estimationNoise reduction performanceTime dimensionEstimated motionBlurring artifactsIndividual framesPartial volume effectsNoise reductionQuantitative evaluationReduction performanceImagesNoiseSPECT imagesStatic SPECT imagesArtifactsFrameGate sequences