2024
Integration of a continuously varying image-space PSF for a dual-panel ultra-high TOF-PET scanner
Chemli Y, Marin T, Orehar M, Dolenec R, Normandin M, Gascón D, Gola A, Grogg K, Pavón G, Razdevsek G, Pestotnik R, Fakhri G. Integration of a continuously varying image-space PSF for a dual-panel ultra-high TOF-PET scanner. 2024, 00: 1-1. DOI: 10.1109/nss/mic/rtsd57108.2024.10656225.Peer-Reviewed Original ResearchGaussian mixture modelGaussian process regressionPoint spread functionAccurate image reconstructionMaximum likelihood estimation maximizationShift-variant convolutionsImage reconstructionMixture modelProcess regressionEstimation maximizationTime-of-flight (TOFPanel architectureSpread functionArchitectureParameter interpolationHigh resolution time-of-flight (TOFTOF-PET scannerBrain phantomFitting processPositron emission tomography scannerSimulated point sourcesConvolutionAlgorithmEffective diagnosisSize benefits
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
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