2021
Magnetic resonance parameter mapping using model‐guided self‐supervised deep learning
Liu F, Kijowski R, Fakhri G, Feng L. Magnetic resonance parameter mapping using model‐guided self‐supervised deep learning. Magnetic Resonance In Medicine 2021, 85: 3211-3226. PMID: 33464652, PMCID: PMC9185837, DOI: 10.1002/mrm.28659.Peer-Reviewed Original ResearchConceptsMR parameter mappingSupervised learningReconstruction qualityImaging modelSelf-supervised deep learningStandard supervised learningConventional iterative reconstructionData setsDeep learning purposesSuperior reconstruction qualityImprove reconstruction qualityQuantitative MRI applicationsUndersampled k-spacePresence of noisePhysical modeling constraintsSparsity constraintNetwork trainingReconstruction performanceDeep learningReconstruction frameworkMap extractionImprove image qualitySuppress noiseGround truthUndersampling artifacts
2019
MR-based cardiac and respiratory motion correction of PET: application to static and dynamic cardiac 18F-FDG imaging
Petibon Y, Sun T, Han P, Ma C, Fakhri G, Ouyang J. MR-based cardiac and respiratory motion correction of PET: application to static and dynamic cardiac 18F-FDG imaging. Physics In Medicine And Biology 2019, 64: 195009. PMID: 31394518, PMCID: PMC7007962, DOI: 10.1088/1361-6560/ab39c2.Peer-Reviewed Original ResearchConceptsMR-based motion correctionRespiratory motion correctionMotion correctionImproved spatial resolutionReconstructed activity concentrationCardiac PET dataSpatial resolutionCoincidence eventsMR-basedPET imagingContrast-to-noise ratioCardiac PET imagingRespiratory phasesMC dataImprove image qualityMR acquisitionQuantitative accuracyCardiac PETPET dataActivity concentrationsMyocardium wallF-FDG PETDynamics studiesImage qualityMotion artifacts
2014
Preliminary Investigation of CBCT Imaging Optimization for Image-Guided Radiation Therapy
Bian J, Sharp G, Park Y, Bortfeld T, Fakhri G. Preliminary Investigation of CBCT Imaging Optimization for Image-Guided Radiation Therapy. 2014, 1-4. DOI: 10.1109/nssmic.2014.7430871.Peer-Reviewed Original ResearchImage-guided radiation therapyCone-beam CTCone-beam CT image qualityImprove CBCT image qualityCBCT image qualityCone-beam CT imagesOptimization-based reconstruction algorithmsReduce patient doseImage qualityCBCT dataImages of improved qualityImaging doseReconstruction algorithmIterative reconstruction techniqueASD-POCSImage reconstruction algorithmPatient doseImprove image qualityRadiation therapyDose reductionRadiation doseImage-guidedDosePoor image qualityExposure levels