2016
Impact of motion and partial volume effects correction on PET myocardial perfusion imaging using simultaneous PET-MR
Petibon Y, Guehl N, Reese T, Ebrahimi B, Normandin M, Shoup T, Alpert N, Fakhri G, Ouyang J. Impact of motion and partial volume effects correction on PET myocardial perfusion imaging using simultaneous PET-MR. Physics In Medicine And Biology 2016, 62: 326-343. PMID: 27997375, PMCID: PMC5241952, DOI: 10.1088/1361-6560/aa5087.Peer-Reviewed Original ResearchConceptsSimultaneous PET-MRPET myocardial perfusion imagingMyocardial perfusion imagingPoint spread functionPoint-spread function correctionUngated dataMotion correctionPET-MRPartial volume effectsApparent wall thicknessMyocardial blood flowPartial volume effect correctionMR-based motion correctionMotion fieldPET-MR scannersPoint spread function modelPET dataPerfusion imagingImage qualityImpact of motionDynamic myocardial perfusion imagingAttenuation mapNon-rigid registrationAbsolute myocardial blood flowUngated images
2015
PET Point Spread Function Modeling and Image Deblurring Using a PET/MRI Joint Entropy Prior
Dutta J, Fakhri G, Zhu X, Li Q. PET Point Spread Function Modeling and Image Deblurring Using a PET/MRI Joint Entropy Prior. 2015, 1423-1426. DOI: 10.1109/isbi.2015.7164143.Peer-Reviewed Original ResearchJoint entropyDe-blurring techniqueImage deblurringBrain WebQuantitative accuracy of PETImage spaceEfficient frameworkDeconvolution problemDeblurringCost functionPoint spread function modelPenalty functionHuman datasetsSpatial resolution capabilitiesPET scannerAmplifier noisePET imagingImagesConsistent with MRIQuantitative accuracyPartial volume effectsPhantomDatasetEntropyFunction model
2014
Relative role of motion and PSF compensation in whole‐body oncologic PET‐MR imaging
Petibon Y, Huang C, Ouyang J, Reese T, Li Q, Syrkina A, Chen Y, Fakhri G. Relative role of motion and PSF compensation in whole‐body oncologic PET‐MR imaging. Medical Physics 2014, 41: 042503. PMID: 24694156, PMCID: PMC3971824, DOI: 10.1118/1.4868458.Peer-Reviewed Original ResearchConceptsPoint spread function modelRespiratory motionPoint spread functionPET-MR scannersPencil-beam navigator echoesPET-MRMeasurement of respiratory motionPSF modelRespiratory motion correctionDetector blur effectsModel respiratory motionLung-liver interfacePatient studiesLesion contrastSimultaneous PET-MRSource of image degradationWhole-body PET imagingPET reconstruction algorithmMoving lesionsPhantom experiment resultsPET eventsContrast recoveryNavigator echoesIterative reconstruction processMotion correction