2019
Spatially-variant image-based modeling of PSF deformations with application to a limited angle geometry from a dual-panel breast-PET imager
Gravel P, Surti S, Krishnamoorthy S, Karp J, Matej S. Spatially-variant image-based modeling of PSF deformations with application to a limited angle geometry from a dual-panel breast-PET imager. Physics In Medicine And Biology 2019, 64: 225015. PMID: 31569078, PMCID: PMC7236960, DOI: 10.1088/1361-6560/ab4914.Peer-Reviewed Original ResearchConceptsRealistic breast modelResolution modelingConsiderable deformationImage-based modelingDeformationSystem configurationPoint spread functionLimited angle geometryDirect image reconstructionBreast modelFlight methodRMSE valuesAngle geometryConsistent performanceOverall errorPerformanceModelingAccurate lesion locationImage reconstructionConsiderable improvementReconstructed imagesQuantitative performanceDeconvolution methodHigh-count dataLow-count data
2010
Motion compensation for fully 4D PET reconstruction using PET superset data
Verhaeghe J, Gravel P, Mio R, Fukasawa R, Rosa-Neto P, Soucy J, Thompson C, Reader A. Motion compensation for fully 4D PET reconstruction using PET superset data. Physics In Medicine And Biology 2010, 55: 4063-4082. PMID: 20601774, DOI: 10.1088/0031-9155/55/14/008.Peer-Reviewed Original ResearchConceptsSubject head motionPET reconstructionPET image reconstructionHead motionImage reconstruction algorithmMotion compensation methodImage framesOptical tracking systemMotion compensationList-mode eventsImage reconstructionTracking systemReconstruction algorithmSingle instanceMotion compensation strategyAlgorithmMultiple time framesReconstruction methodNormalization schemeImportant issuePET dataBasis functionsDynamic PET imagingHead movementsParametric images