2022
Adversarial Non-local Multi-modality MRI Aggregation for Directional DWI Synthesis
Liu X, Xing F, Wedeen V, Fakhri G, Woo J. Adversarial Non-local Multi-modality MRI Aggregation for Directional DWI Synthesis. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2022 DOI: 10.58530/2022/3449.Peer-Reviewed Original Research
2021
Dual-Cycle Constrained Bijective Vae-Gan For Tagged-To-Cine Magnetic Resonance Image Synthesis
Liu X, Xing F, Prince J, Carass A, Stone M, Fakhri G, Woo J. Dual-Cycle Constrained Bijective Vae-Gan For Tagged-To-Cine Magnetic Resonance Image Synthesis. 2011 IEEE International Symposium On Biomedical Imaging: From Nano To Macro 2021, 00: 1448-1452. PMID: 34707796, PMCID: PMC8547333, DOI: 10.1109/isbi48211.2021.9433852.Peer-Reviewed Original ResearchMR image synthesisAdversarial trainingImage synthesisVAE-GANMR imagingTagged MR imagesCine MR imagingMoving organsSuperior performanceMagnetic resonance imagingAcquisition timeCycle reconstructionHealthy subjectsResonance imagingAnatomical resolutionComparison methodMotion analysisTagged magnetic resonance imagingTissue segmentationImagesScanning session
2019
Limited-Angle TOF-PET for Intraoperative Surgical Application
Sajedi S, Bläckberg L, Vittum B, Devabhaktuni A, Nejad M, Fakhri G, Choi H, Sabet H. Limited-Angle TOF-PET for Intraoperative Surgical Application. 2019, 00: 1-4. DOI: 10.1109/nss/mic42101.2019.9059690.Peer-Reviewed Original ResearchSentinel lymph nodeHigh-resolution positron emission tomographyTOF-PETNear-infraredDetector ringDetector blockIncreasing acquisition timeTorso phantomHot spheresBottom detectorPositron emission tomographyTime resolutionDetectorIdentification of sentinel lymph nodesAcquisition timeSentinel lymph node identificationReconstructed imagesAccurate identification of sentinel lymph nodesActivity concentrationsWhole-body positron emission tomographyComplete tumor removalFalse negative rateImage slicesImprove patient recoveryPatient bedPerformance evaluation of the 5‐Ring GE Discovery MI PET/CT system using the national electrical manufacturers association NU 2‐2012 Standard
Pan T, Einstein S, Kappadath S, Grogg K, Gomez C, Alessio A, Hunter W, Fakhri G, Kinahan P, Mawlawi O. Performance evaluation of the 5‐Ring GE Discovery MI PET/CT system using the national electrical manufacturers association NU 2‐2012 Standard. Medical Physics 2019, 46: 3025-3033. PMID: 31069816, PMCID: PMC7251507, DOI: 10.1002/mp.13576.Peer-Reviewed Original ResearchConceptsAxial field-of-viewPeak noise-equivalent count rateNoise-equivalent count rateField of viewCount ratePET performanceNational Electrical Manufacturers Association NU-2Transaxial field of viewPET/CT systemTime resolutionMean energy resolutionConventional photomultiplier tubesCount rate performanceImage quality phantomSpatial resolution measurementsFiltered back projection algorithmImage qualityEnergy resolutionAcquisition timeNU 2Count lossDetector designPhotomultiplier tubeMean energyPET/MR systems
2017
Feasibility study of using fall‐off gradients of early and late PET scans for proton range verification
Cho J, Grogg K, Min C, Zhu X, Paganetti H, Lee H, Fakhri G. Feasibility study of using fall‐off gradients of early and late PET scans for proton range verification. Medical Physics 2017, 44: 1734-1746. PMID: 28273345, PMCID: PMC5462437, DOI: 10.1002/mp.12191.Peer-Reviewed Original ResearchConceptsProton range verificationProton rangeMonte Carlo simulationsRange verificationFall-offIn-room positron emission tomographyCarlo simulationsResidual proton rangeDose fall-offPostirradiation delayPositron emission tomography imagingSOBP beamProton beamPositron emission tomographyPositron emission tomography scanPhantom studyIn-roomFunction of depthPhantomProtonOff-setMonteAcquisition timeBeamPositron emission tomography signalMonte Carlo simulation of PET/MR scanner and assessment of motion correction strategies
şın A, Ozsahin D, Dutta J, Haddani S, El-Fakhri G. Monte Carlo simulation of PET/MR scanner and assessment of motion correction strategies. Journal Of Instrumentation 2017, 12: c03089-c03089. DOI: 10.1088/1748-0221/12/03/c03089.Peer-Reviewed Original ResearchMotion correction strategiesGATE simulationsMonte Carlo simulationsImage qualityPET/MR scannersPositron emission tomographyPET acquisitionImage reconstruction methodMotion compensation methodEmission tomographyImaging modalitiesAcquisition timeExtraction algorithmReference imageRespiratory movementsTumor detectionGateReconstruction methodPatient movement
2016
Direct Parametric Imaging of Reversible Tracers Using Partial Dynamic Data
Kim K, Fakhri G, Li Q. Direct Parametric Imaging of Reversible Tracers Using Partial Dynamic Data. 2016, 1-4. DOI: 10.1109/nssmic.2016.8069385.Peer-Reviewed Original Research
2015
Accelerated acquisition of tagged MRI for cardiac motion correction in simultaneous PET‐MR: Phantom and patient studies
Huang C, Petibon Y, Ouyang J, Reese T, Ahlman M, Bluemke D, El Fakhri G. Accelerated acquisition of tagged MRI for cardiac motion correction in simultaneous PET‐MR: Phantom and patient studies. Medical Physics 2015, 42: 1087-1097. PMID: 25652521, PMCID: PMC4312342, DOI: 10.1118/1.4906247.Peer-Reviewed Original ResearchConceptsPET motion correctionMotion correctionSimultaneous PET-MRTMR dataPET list-mode dataPET-MRList-mode dataCardiac motion correctionPET-MR scannersImage qualityParallel imagingAcquisition timePET imagingRespiratory motionCompressive sensingMotion fieldAttenuation correctionDefect contrastModerate acceleration factorsDegradation of image qualityTagged MRCardiac phantomLong acquisition timesPhantomAccurate motion field