2024
Flat Panel TOF-PET Detectors: a Simulation Study
Orehar M, Dolenec R, Fakhri G, Gascón D, Gola A, Korpar S, Križan P, Razdevšek G, Marin T, Chemli Y, Žontar D, Pestotnik R. Flat Panel TOF-PET Detectors: a Simulation Study. 2024, 00: 1-2. DOI: 10.1109/nss/mic/rtsd57108.2024.10658250.Peer-Reviewed Original ResearchTime resolutionAngular coverageFlat-panel detectorScintillation materialsGATE softwareAxial coverageBiograph VisionPanel detectorTotal-body coverageClinical scannerImage reconstructionDetectorReconstructed imagesHomogeneous contrastCylindrical scannerImage qualityState-of-the-artScintillationHigh-performance computingScannerPhantomResolutionCore hoursPositron emission tomographyGate
2013
Generalization Evaluation of Machine Learning Numerical Observers for Image Quality Assessment
Kalayeh M, Marin T, Brankov J. Generalization Evaluation of Machine Learning Numerical Observers for Image Quality Assessment. IEEE Transactions On Nuclear Science 2013, 60: 1609-1618. PMID: 25346545, PMCID: PMC4207371, DOI: 10.1109/tns.2013.2257183.Peer-Reviewed Original ResearchImage quality assessmentChannelized Hotelling observerHuman observer performanceVector machineMachine learningHuman observersTask-based evaluationEvaluation of medical imagesKernel-based regression modelsSupport vector machineInternal noise modelRelevance vector machineReduce model complexityMachine-learning frameworkBayesian machine-learning frameworkGeneralization performanceMedical imagesDetection taskQuality assessmentReconstructed imagesComputation timeHotelling observerNoise modelReconstruction methodModel complexity
2010
MOTION-COMPENSATED RECONSTRUCTION OF GATED CARDIAC SPECT IMAGES USING A DEFORMABLE MESH MODEL
Marin T, Wernick M, Yang Y, Brankov J. MOTION-COMPENSATED RECONSTRUCTION OF GATED CARDIAC SPECT IMAGES USING A DEFORMABLE MESH MODEL. 2010, 520-523. DOI: 10.1109/isbi.2010.5490294.Peer-Reviewed Original ResearchDeformable mesh modelGated cardiac SPECT imagesMesh modelMotion estimation techniquesMotion trajectoryTemporal smoothness constraintMaximum-likelihood expectation-maximization algorithmExpectation-maximization algorithmEstimated motionMotion-compensated reconstructionMotion compensationLevel of noiseSmoothness constraintPixel gridTemporal constraintsTemporal filteringReconstruction algorithmReconstructed imagesMesh domainCardiac SPECT imagingAlgorithmNoise reductionTemporal correlationNoise effectsIteration
2009
A quantitative evaluation study of four-dimensional gated cardiac SPECT reconstruction
Jin M, Yang Y, Niu X, Marin T, Brankov J, Feng B, Pretorius P, King M, Wernick M. A quantitative evaluation study of four-dimensional gated cardiac SPECT reconstruction. Physics In Medicine And Biology 2009, 54: 5643-5659. PMID: 19724094, PMCID: PMC3690946, DOI: 10.1088/0031-9155/54/18/019.Peer-Reviewed Original ResearchConceptsGated cardiac SPECT imagesNURBS-based cardiac-torso (NCATMotion-compensated temporal regularizationCardiac SPECT imagingBias-variance analysisDistance-dependent blurringGated cardiac SPECTMotion compensation approachReconstructed myocardiumSPECT imagesDetection of perfusion defectsSPECT reconstructionCardiac SPECTIntensity uniformityTemporal smoothnessPatient dataLeft ventricular myocardiumReconstructed imagesReconstruction processSpatial smoothingPerfusion defectsScatteringDegradation factorsTemporal regularityVentricular myocardium
2008
Motion Compensated Spatio-Temporal Filtering of Cardiac Gated SPECT Images
Marin T, Wernick M, Yang Y, Brankov J. Motion Compensated Spatio-Temporal Filtering of Cardiac Gated SPECT Images. 2008, 3734-3737. DOI: 10.1109/nssmic.2008.4774211.Peer-Reviewed Original ResearchMotion estimationTemporal filteringMotion estimation algorithmCardiac gated SPECT imagingTemporal filtering methodsCardiac gated SPECTDeformable mesh modelSpatio-temporal filteringNoise reduction methodLow photon countsMotion blurHeart wall thickeningProcessing algorithmsEstimation algorithmMesh modelReconstructed imagesMyocardium motionFiltering methodAlgorithmGated SPECTGated SPECT imagingHeart motionFilterReduction methodImages