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
2018
Spatially-Variant Image-Based Modeling of PSF Deformations with Application to Limited Angle Dual-Panel Breast-PET Data
Gravel P, Surti S, Krishnamoorthy S, Karp J, Matej S. Spatially-Variant Image-Based Modeling of PSF Deformations with Application to Limited Angle Dual-Panel Breast-PET Data. 2018, 00: 1-3. DOI: 10.1109/nssmic.2018.8824650.Peer-Reviewed Original Research
2013
Direct 4D PET MLEM Reconstruction of Parametric Images Using the Simplified Reference Tissue Model with the Basis Function Method
Gravel P, Reader A. Direct 4D PET MLEM Reconstruction of Parametric Images Using the Simplified Reference Tissue Model with the Basis Function Method. 2013, 1-7. DOI: 10.1109/nssmic.2013.6829041.Peer-Reviewed Original ResearchKinetic parameter estimationParameter estimation techniquesTime simulationTissue modelFunction methodKinetic modelSimulated 2DHigh-resolution research tomographParameter estimationResolution modelingEstimation techniquesIrreversible componentReal 3D dataReconstruction approachBetter performanceBasis function methodPost-reconstruction approaches
2012
3D PET image reconstruction including both motion correction and registration directly into an MR or stereotaxic spatial atlas
Gravel P, Verhaeghe J, Reader A. 3D PET image reconstruction including both motion correction and registration directly into an MR or stereotaxic spatial atlas. Physics In Medicine And Biology 2012, 58: 105-126. PMID: 23221063, DOI: 10.1088/0031-9155/58/1/105.Peer-Reviewed Original Research