2024
Quantitative Accuracy Assessment of the NeuroEXPLORER for Diverse Imaging Applications: Moving Beyond Standard Evaluations.
Omidvari N, Shanina E, Leung E, Sun X, Li Y, Mulnix T, Gravel P, Henry S, Matuskey D, Volpi T, Jones T, Badawi R, Li H, Carson R, Qi J, Cherry S. Quantitative Accuracy Assessment of the NeuroEXPLORER for Diverse Imaging Applications: Moving Beyond Standard Evaluations. Journal Of Nuclear Medicine 2024, 66: 150-157. PMID: 39638433, PMCID: PMC11705792, DOI: 10.2967/jnumed.124.268309.Peer-Reviewed Original ResearchContrast recovery coefficientHoffman phantomUniform phantomIQ phantomRecovery coefficientBrain PET systemHoffman brain phantomBrain uptakeSpatial resolutionDiverse imaging applicationsCylindrical phantomPET systemBrain phantomNeuroimaging studiesImage qualityImaging conditionsPhantomReconstruction parametersImaging time pointsTime pointsImage-derived input functionHigher spatial resolutionQuantitative accuracyDelayed time pointsBrain disordersExperimental Evaluation of DE-SPECT: A Hyperspectral SPECT System for Region-Selective 3-D Gamma-Ray Spectroscopy of Molecular Theragnostics
Jin Y, Zannoni E, Sankar P, Gura D, Wu R, Zhu S, Zhang F, Streicher M, Yang H, He Z, Metzler S, Liu C, Sinusas A, Meng L. Experimental Evaluation of DE-SPECT: A Hyperspectral SPECT System for Region-Selective 3-D Gamma-Ray Spectroscopy of Molecular Theragnostics. 2024, 00: 1-2. DOI: 10.1109/nss/mic/rtsd57108.2024.10657212.Peer-Reviewed Original ResearchCadmium zinc tellurideCadmium zinc telluride detectorsGamma-ray spectroscopyHigh-sensitivity imagingUniform phantomResolution phantomSPECT systemZinc telluridePhantom studyImage qualityPhantomImaging capabilitiesImaging performanceAperture systemFOVMultiple radiotracersHigh-resolutionCollimatorDual-field-of-viewPeripheral vascular diseaseDetectorState-of-the-art technologiesTellurideClinical systemsFlat Panel TOF-PET Detectors: a Simulation Study
Orehar M, Dolenec R, Fakhri G, Gascón D, Gola A, Korpar S, Križan P, Razdevšek G, Marin T, Chemli Y, Žontar D, Pestotnik R. Flat Panel TOF-PET Detectors: a Simulation Study. 2024, 00: 1-2. DOI: 10.1109/nss/mic/rtsd57108.2024.10658250.Peer-Reviewed Original ResearchTime resolutionAngular coverageFlat-panel detectorScintillation materialsGATE softwareAxial coverageBiograph VisionPanel detectorTotal-body coverageClinical scannerImage reconstructionDetectorReconstructed imagesHomogeneous contrastCylindrical scannerImage qualityState-of-the-artScintillationHigh-performance computingScannerPhantomResolutionCore hoursPositron emission tomographyGateBalanced steady-state free precession phase contrast at 0.55T applied to aortic flow
Xiang J, Ramasawmy R, Seemann F, Peters D, Campbell-Washburn A. Balanced steady-state free precession phase contrast at 0.55T applied to aortic flow. Journal Of Cardiovascular Magnetic Resonance 2024, 26: 101098. PMID: 39278416, PMCID: PMC11638602, DOI: 10.1016/j.jocmr.2024.101098.Peer-Reviewed Original ResearchBalanced steady state free precessionPhase contrastGradient momentsBreath-holdFree-breathing protocolFree breathingGradient echoCardiac outputFree precessionStroke volumeAortic flow quantificationAortic flowPhantomSteady state free precessionSpoiled gradient echoFlow imagingMeasured aortic flowFraction measurementsTeHealthy volunteersVelocity measurementsPlanimetry measurementsCardiac MRHealthy subjectsIncreased SNRNext-generation digital chest tomosynthesis
Gange C, Ku J, Gosangi B, Liu J, Maolinbay M. Next-generation digital chest tomosynthesis. Journal Of Clinical Imaging Science 2024, 14: 22. PMID: 38975057, PMCID: PMC11225395, DOI: 10.25259/jcis_4_2024.Peer-Reviewed Original ResearchRadiation doseLow dose chest CTLung phantomLung nodulesEffective radiation dosePlane resolutionLow radiation doseLow dose CTPhantomSimulated pulmonary nodulesChest CTChest radiologistsHealthy volunteersPulmonary nodulesDose CTAnatomical locationNodule detectionImaging characteristicsTomosynthesisNodulesLungDoseDetect lung nodulesDevicesPotential utilityAccelerated 3D metabolite T1 mapping of the brain using variable‐flip‐angle SPICE
Zhao Y, Li Y, Guo R, Jin W, Sutton B, Ma C, Fakhri G, Li Y, Luo J, Liang Z. Accelerated 3D metabolite T1 mapping of the brain using variable‐flip‐angle SPICE. Magnetic Resonance In Medicine 2024, 92: 1310-1322. PMID: 38923032, DOI: 10.1002/mrm.30200.Peer-Reviewed Original ResearchConceptsLow-rank tensor modelGeneralized series modelMetabolite TExperimental resultsBrain metabolitesClinically acceptable scan timeEfficient encodingPhantom experimental resultsAcceptable scan timeNoisy dataSparse samplingImaging problemsData processingHealthy subject dataVariable flip angleFlip angleTensor modelSaturation effectsQuantitative metabolic imagingMRSI techniquePhantomScan timeData acquisitionMetabolic imagingT1 mappingIndirect 1H–[13C] MRS of the human brain at 7 T using a 13C‐birdcage coil and eight transmit–receive 1H‐dipole antennas with a 32‐channel 1H‐receive array
Jacobs S, Prompers J, van der Kemp W, van der Velden T, Gosselink M, Meliadò E, Hoogduin H, Mason G, de Graaf R, Miller C, Bredael G, van der Kolk A, Alborahal C, Klomp D, Wiegers E. Indirect 1H–[13C] MRS of the human brain at 7 T using a 13C‐birdcage coil and eight transmit–receive 1H‐dipole antennas with a 32‐channel 1H‐receive array. NMR In Biomedicine 2024, 37: e5195. PMID: 38845018, DOI: 10.1002/nbm.5195.Peer-Reviewed Original ResearchStimulated echo acquisition modeSignal-to-noise ratioSlice-selective excitationAdiabatic selective refocusingUltra-high fieldIncreased spectral dispersionEcho acquisition modeSpectral dispersionVoxel positionSemi-localPhantomAcquisition modeElectromagnetic simulationsHuman brainSAR limitsExcitationBi-frontalSLASERHealthy volunteersSpectraTowards cardiac DMI at clinical field strengths
Xiang J, de Graaf R, De Feyter H, Thomas M, Baldassarre L, Kwan J, Coman D, Herman P, Peters D. Towards cardiac DMI at clinical field strengths. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2024 DOI: 10.58530/2024/3052.Peer-Reviewed Original ResearchConstrained alternating minimization for parameter mapping (CAMP)
Elsaid N, Dispenza N, Hu C, Peters D, Constable R, Tagare H, Galiana G. Constrained alternating minimization for parameter mapping (CAMP). Magnetic Resonance Imaging 2024, 110: 176-183. PMID: 38657714, PMCID: PMC11193090, DOI: 10.1016/j.mri.2024.04.029.Peer-Reviewed Original ResearchConceptsAlternating minimizationAccelerated parameter mappingImage qualityReconstructed image qualityEfficient reconstruction algorithmSacrificing model accuracyParameter mapsPhantom studyK-space samplingAcceleration datasetsK-spaceUndersampling artifactsCartesian acquisitionConsecutive imagesReconstruction algorithmIndividual imagesModel cost functionExponential decayEcho timeReconstruction methodCost functionReduce artifactsPhantomScan timeObjective function
2023
Phantom oscillations in principal component analysis
Shinn M. Phantom oscillations in principal component analysis. Proceedings Of The National Academy Of Sciences Of The United States Of America 2023, 120: e2311420120. PMID: 37988465, PMCID: PMC10691246, DOI: 10.1073/pnas.2311420120.Peer-Reviewed Original ResearchHigh-dimensional spaceHigh-dimensional data analysisDimensionality reduction methodsTraditional cross-validationLow-dimensional patternsProperties of dataPrincipal component analysisNeuroscience dataImpact data analysisComponent analysisMathematical proofsCross-validationOscillationsPhantomData analysisSimulation results for limited-angle ultra-high time-of-flight resolution PET system
Marin T, Zhuo Y, Orehar M, Razdevšekc G, Dolenec R, Mounime I, Alamo J, Benlloch J, Chemli Y, Fernández-Tenllado J, Gascon D, Gola A, Gomez S, Grogg K, Guberman D, Korpar S, Krizan P, Majewski S, Manera R, Mariscal-Castilla A, Mauricio J, Merzi S, Morera C, Normandin M, Pavon G, Penna M, Seljak A, Studen A, Pestotnik R, Fakhri G. Simulation results for limited-angle ultra-high time-of-flight resolution PET system. 2023, 00: 1-1. DOI: 10.1109/nssmicrtsd49126.2023.10337821.Peer-Reviewed Original ResearchResolution PET systemsPET systemAxial fieldPositron emission tomography systemPositron emission tomography scannerTotal-body PET systemsLong axial fieldTOF resolutionNovel detectorNumerical phantomHigh-sensitivity systemMonte-Carlo simulationsSpatial resolutionPositron emission tomographyMonte-CarloSystem sensitivityImage resolutionImage qualityScintillationReconstruction engineFWHMResolutionTOFPhantomScannerImaging Performance of the Fully Assembled Ultra-High Resolution (UHR) Brain PET scanner
Loignon-Houle F, Toussaint M, Beaudoin J, Gaudreault M, Doyon V, Leroux J, Auger E, Thibaudeau C, Arpin L, Croteau E, Espinosa-Bentancourt E, Samson A, Bouchard J, Espagnet R, Viscogliosi N, Pepin C, Labrecque V, Paulin C, Marin T, Ouyang J, Normandin M, Tétrault M, Michaud J, Fontaine R, Fakhri G, Lecomte R. Imaging Performance of the Fully Assembled Ultra-High Resolution (UHR) Brain PET scanner. 2023, 00: 1-1. DOI: 10.1109/nssmicrtsd49126.2023.10338146.Peer-Reviewed Original ResearchBrain PET scannerUltra-high resolutionPET scannerPeak noise-equivalent count rateUltra Micro Hot Spot PhantomNoise-equivalent count rateAxial field-of-viewHot spot phantomHoffman brain phantomSmall-scale structuresCount rateBrain phantomContrast recoveryReadout schemeField of viewBrain PET imagingPhantomExcellent image qualityImaging performanceSpatial resolutionSmall structuresUltrahigh resolutionImage qualityPET imagingLarger rodsMulti-echo RF spatial phase encoding for gradient-free imaging in a nonuniform B0-field at low-field
Selvaganesan K, Ha Y, Sun C, Samardzija A, Zhang Z, Sun H, Galiana G, Constable T. Multi-echo RF spatial phase encoding for gradient-free imaging in a nonuniform B0-field at low-field. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/0532.Peer-Reviewed Original ResearchMagnetization-Prepared Golden-angle RAdial Sparse Parallel (MP-GRASP) MRI for Rapid Free-Breathing 3D T1 Mapping of Renal Allografts
Bane O, Feng L, Xia D, Al-Mubarak H, Cuevas J, Muthukumar T, Dyke J, Menon M, Farouk S, Taouli B, Lewis S. Magnetization-Prepared Golden-angle RAdial Sparse Parallel (MP-GRASP) MRI for Rapid Free-Breathing 3D T1 Mapping of Renal Allografts. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/1286.Peer-Reviewed Original ResearchGolden-angle radial sparse parallel imagingVariable flip angleCortico-medullary differentiationGolden-angle radial sparse parallelRenal allograftsRenal transplantationT1 mappingGold standardFlip anglePatientsT1 quantificationSpatial resolutionParallel imagingPhantomAcquisition timeVariable flip angle methodAccurate T1 estimationAllograftT1 estimationTransplantationImpact of motion correction on [18F]-MK6240 tau PET imaging
Tiss A, Marin T, Chemli Y, Spangler-Bickell M, Gong K, Lois C, Petibon Y, Landes V, Grogg K, Normandin M, Becker A, Thibault E, Johnson K, Fakhri G, Ouyang J. Impact of motion correction on [18F]-MK6240 tau PET imaging. Physics In Medicine And Biology 2023, 68: 105015. PMID: 37116511, PMCID: PMC10278956, DOI: 10.1088/1361-6560/acd161.Peer-Reviewed Original ResearchConceptsMotion correctionPET quantitationImpact of motion correctionList-mode reconstructionMotion correction methodList-mode dataMotion-corrected imagesEffect of motion correctionVoxel displacementsPhantom experimentsOptical tracking dataLong acquisitionBrain PET scansSlow motionImage qualityPET imagingPositron emission tomographyCorrectionMotionCorrection methodRates of tau accumulationHead motionMotion metricsPhantomPositronSuper-resolution in brain positron emission tomography using a real-time motion capture system
Chemli Y, Tétrault M, Marin T, Normandin M, Bloch I, El Fakhri G, Ouyang J, Petibon Y. Super-resolution in brain positron emission tomography using a real-time motion capture system. NeuroImage 2023, 272: 120056. PMID: 36977452, PMCID: PMC10122782, DOI: 10.1016/j.neuroimage.2023.120056.Peer-Reviewed Original ResearchConceptsBrain positron emission tomographySuper-resolutionEvent-by-event basisReal-time motion capture systemSR reconstruction methodTracking cameraVisualization of small structuresPET reconstruction algorithmMoving phantomMeasure target motionLine profilesPET/CT scannerMeasured shiftsImprove image resolutionMotion capture systemMotion tracking devicePositron emission tomographyReconstruction algorithmSpatial resolutionMeasured linesPhantomReal-timeEstimation frameworkIncreased spatial resolutionReconstruction method
2022
The Impact of Additional Sampling on Hot-Spot Contrast for DE-SPECT
Metzler S, Zannoni E, Sankar P, Liu C, Sinusas A, Meng L. The Impact of Additional Sampling on Hot-Spot Contrast for DE-SPECT. 2022, 00: 1-4. DOI: 10.1109/nss/mic44845.2022.10399030.Peer-Reviewed Original ResearchHot spot phantomCollimator configurationCZT moduleAxial shiftDetector positionSensitivity dropsSample positionHot spotsNominal positionPhantomPeripheral arterial diseaseOptimal contrastCollimatorActuator switchingCZTArtery diseaseNoise levelDetectorConfigurationSmall axial shiftsShiftEvaluate contrastOptimal tradeoffHigh-Resolution and High-Sensitivity Spread Field Imaging to Differentiate Sub-endocardium and Sub-epicardium in Cardiac SPECT — A Preliminary Phantom Study
Mu Z, Palyo R, Goyal D, Sandoval V, Mu Z, Tao Z, Sinusas A, Miller E, Liu Y. High-Resolution and High-Sensitivity Spread Field Imaging to Differentiate Sub-endocardium and Sub-epicardium in Cardiac SPECT — A Preliminary Phantom Study. 2022, 00: 1-4. DOI: 10.1109/nss/mic44845.2022.10399016.Peer-Reviewed Original ResearchTc-99m solutionHole imagesCardiac SPECTCardiac phantomMyocardial perfusion defectsField imagesParallel hole collimatorResolution of SPECTSub-endocardiumSubset expectation maximizationCZT detectorsSub-epicardiumHole collimatorPerfusion defectsHigh-resolutionOSEM algorithmCollimatorPhantom studyScanner configurationReconstruction technologyPhantomSPECT slicesTransmural perfusion gradientExpectation maximizationOSEMEvent-by-Event 3D Continuous Motion Correction Based on a Data-Driven Motion Estimation Algorithm for 82Rb Myocardial Perfusion Imaging
Tsai Y, Fontaine K, Mulnix T, Armstrong I, Hayden C, Spottiswoode B, Casey M, Liu C. Event-by-Event 3D Continuous Motion Correction Based on a Data-Driven Motion Estimation Algorithm for 82Rb Myocardial Perfusion Imaging. 2022, 00: 1-4. DOI: 10.1109/nss/mic44845.2022.10399100.Peer-Reviewed Original ResearchMotion correctionData-driven motion estimationPET/CT scannerSuperior-inferior motionMotion effectsSilicon photomultipliersNEMA phantomReconstruction frameworkPET acquisitionReconstructed image qualityCardiac PETMotion estimation algorithmPatient datasetsImage qualityMyocardial perfusion imagingCorrectionMotion monitoringTemporal resolutionSiPMMotionPhotomultiplierMotion estimationMotion vectorsPhantomCorrection algorithmOptimization of Design Parameters of Flat Panel Limited Angle TOF-PET Scanner: a Simulation Study
Orehar M, Dolenec R, Fakhri G, Gascón D, Gola A, Korpar S, Križan P, Razdevšek G, Pestotnik R. Optimization of Design Parameters of Flat Panel Limited Angle TOF-PET Scanner: a Simulation Study. 2022, 00: 1-4. DOI: 10.1109/nss/mic44845.2022.10399330.Peer-Reviewed Original ResearchImage quality phantomFlat-panel detectorGATE softwareRing scannerPanel detectorDetection chainState-of-the-artNEMA standardsOpen geometryImage reconstructionReconstructed imagesPositron emission tomographyState-of-the-art scannersScannerPhantomDetectorPhotodetectorsElectronNEMAMaterial costGatePositron
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