2024
Deep Learning-based Dynamic PET Intra-frame Motion Correction and Integration with Inter-frame Motion Estimation
Guo X, Tsai Y, Liu Q, Guo L, Valadez G, Dvornek N, Liu C. Deep Learning-based Dynamic PET Intra-frame Motion Correction and Integration with Inter-frame Motion Estimation. 2024, 00: 1-1. DOI: 10.1109/nss/mic/rtsd57108.2024.10657268.Peer-Reviewed Original ResearchIntra-frame motionMotion correctionGated imagesLearning-based registration approachesDeep learning-based worksInter-frame motion estimationConventional image registrationLearning-based worksImage registrationMotion estimation processMotion estimation frameworkInter-frame registrationRespiratory gatingImprove image sharpnessInter-frameInference timeMotion estimationReconstructed framesDynamic PET datasetsGeneralization abilityPET imagingConventional registrationDynamic PET imagesImprove image qualityComputational inefficiency
2019
Free-Breathing Three-Dimensional T1 Mapping of the Heart Using Subspace-Based Data Acquisition and Image Reconstruction
Han P, Horng D, Marin T, Petibon Y, Ouyang J, Fakhri G, Ma C. Free-Breathing Three-Dimensional T1 Mapping of the Heart Using Subspace-Based Data Acquisition and Image Reconstruction. Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2019, 00: 4008-4011. PMID: 31946750, DOI: 10.1109/embc.2019.8856511.Peer-Reviewed Original ResearchConceptsRespiratory motionRespiratory gatingLongitudinal relaxation timeSubspace-based methodsLow-rank tensorMagnetic resonance imagingRelaxation timeT1 mappingT)-spaceSubspace-basedSparsity constraintDynamic MR imagingReconstructed mapsSpatiotemporal correlationThree-dimensionalCardiac MRHealthy subjectsIn vivo dataMagnetizationResonance imagingImage functionMR imagingData acquisitionClinical applicationTensor
2018
MR-based motion correction for cardiac PET parametric imaging: a simulation study
Guo R, Petibon Y, Ma Y, El Fakhri G, Ying K, Ouyang J. MR-based motion correction for cardiac PET parametric imaging: a simulation study. EJNMMI Physics 2018, 5: 3. PMID: 29388075, PMCID: PMC5792384, DOI: 10.1186/s40658-017-0200-9.Peer-Reviewed Original ResearchNon-motion-correctedPositron emission tomography-magnetic resonanceMR-based motion correctionRespiratory motionMotion correctionActivity distributionMotion correction methodRespiratory gatingPET sinogramsNoise levelCardiac gatingMRI simulationOne-tissue compartment modelNoise realizationsMC methodPET dataCardiac motionReduce motion blurParametric imagesIncreased noise levelConclusionsThis simulation studyArterial input functionPET imagingGateMyocardial regions
2012
MRI-Based Nonrigid Motion Correction in Simultaneous PET/MRI
Chun Y, Reese T, Ouyang J, Guerin B, Catana C, Zhu X, Alpert N, Fakhri G. MRI-Based Nonrigid Motion Correction in Simultaneous PET/MRI. Journal Of Nuclear Medicine 2012, 53: 1284-1291. PMID: 22743250, PMCID: PMC4077320, DOI: 10.2967/jnumed.111.092353.Peer-Reviewed Original ResearchConceptsChannelized Hotelling observerMotion correctionDetection signal-to-noise ratioSignal-to-noise ratioMRI-based motion correctionRespiratory motion correctionMotion-corrected reconstructionOrdered-subsets expectation maximization algorithmNonrigid motion correctionChannelized Hotelling observer studyPET image qualityNonrigid image registration methodCoincidence dataDeformable phantomRespiratory gatingReduce radiation doseDynamic phantomImage registration methodReduced signal-to-noise ratioSimultaneous PET/MRICost of increased noiseHotelling observerPhantomAttenuation measurementsRabbit studies
2011
Respiratory Gating for A Stationary Dedicated Cardiac SPECT System
Liu C, Chan C, Harris M, Le M, Biondi J, Volokh L, Sinusas A. Respiratory Gating for A Stationary Dedicated Cardiac SPECT System. 2011, 2898-2901. DOI: 10.1109/nssmic.2011.6152514.Peer-Reviewed Original ResearchCardiac SPECT systemDedicated cardiac SPECT systemsRespiratory motion correctionTemporal dataSlow gantry rotationData acquisitionCompressive sensorSPECT systemConventional SPECT systemImage qualityMotion correctionRespiratory gating techniquePhysical phantomRespiratory motionContrast recoveryRespiratory gatingUngated imagesImagesRespiratory triggersSystemGating techniqueMyocardial perfusion SPECTUpper abdomenLower chest
1995
1020-6 Delineation of Three-Dimensional Geometry of Intracardiac Blood Flow Jets and Proximal Flow Convergence Regions in Patients with Flow Abnormalities by Volume-Rendered Three-Dimensional Echocardiography via Transthoracic Imaging
Delabays A, Sugeng L, Cao Q, Marx G, Vannan M, Schwartz S, Hsu T, Ho S, Chen C, Pandian N. 1020-6 Delineation of Three-Dimensional Geometry of Intracardiac Blood Flow Jets and Proximal Flow Convergence Regions in Patients with Flow Abnormalities by Volume-Rendered Three-Dimensional Echocardiography via Transthoracic Imaging. Journal Of The American College Of Cardiology 1995, 25: 398a. DOI: 10.1016/0735-1097(95)93108-o.Peer-Reviewed Original ResearchThree-dimensional echocardiographyJet reconstructionProximal flow convergence regionRespiratory gatingTransthoracic approachEccentric jetsCardiac structureTransthoracic imagingColor DopplerCardiac disordersFlow abnormalitiesColor Doppler informationFlow convergence regionSpatial extensionBlood flow jetJetTransthoracicEchocardiographyFlow jetPatientsAbnormalitiesCavity wallHemispherical geometryFlow quantitationCentral jetTransthoracic Real‐Time Three‐Dimensional Echocardiography Using a Fan‐Like Scanning Approach For Data Acquisition
DELABAYS A, PANDIAN N, CAO Q, SUGENG L, MARX G, LUDOMIRSKI A, SCHWARTZ S. Transthoracic Real‐Time Three‐Dimensional Echocardiography Using a Fan‐Like Scanning Approach For Data Acquisition. Echocardiography 1995, 12: 49-59. PMID: 10150389, DOI: 10.1111/j.1540-8175.1995.tb00521.x.Peer-Reviewed Original ResearchConceptsThree-dimensional echocardiographyAtrial septal defectSeptal defectTransthoracic real-time three-dimensional echocardiographyReal-time three-dimensional echocardiographyTransthoracic three-dimensional echocardiographyRight side of the heartVisualization of intracardiac structuresTwo-dimensional echocardiographyStenotic mitral valveRespiratory gatingTricuspid annulusVena cavaMitral valveCoronary sinusSubcostal windowEchocardiographyIntracardiac structuresTransthoracicAdequate visualizationThe heartCardiovascular disordersTransthoracic transducerRight sideClinical methods
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