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
2016
Spectral Quantification for High-Resolution MR Spectroscopic Imaging With Spatiospectral Constraints
Ning Q, Ma C, Lam F, Liang Z. Spectral Quantification for High-Resolution MR Spectroscopic Imaging With Spatiospectral Constraints. IEEE Transactions On Biomedical Engineering 2016, 64: 1178-1186. PMID: 27479954, PMCID: PMC5513734, DOI: 10.1109/tbme.2016.2594583.Peer-Reviewed Original Research
2015
High‐resolution 1H‐MRSI of the brain using SPICE: Data acquisition and image reconstruction
Lam F, Ma C, Clifford B, Johnson C, Liang Z. High‐resolution 1H‐MRSI of the brain using SPICE: Data acquisition and image reconstruction. Magnetic Resonance In Medicine 2015, 76: 1059-1070. PMID: 26509928, PMCID: PMC4848237, DOI: 10.1002/mrm.26019.Peer-Reviewed Original ResearchConceptsSubspace structureSpectroscopic imaging sequenceImage reconstructionSubspace modelImage sequencesImage reconstruction purposesEdge-preserving regularizationData acquisitionReconstruction methodThrough-plane resolutionImage reconstruction methodIn-planeIn vivo brain experimentsEncoding schemeField inhomogeneity correctionIn-plane resolutionTwo-dimensional (2DImaging frameworkInhomogeneity correctionData setsSubspaceHigh-resolutionHybrid data setsSpatial resolutionBrain experimentsRemoval of nuisance signals from limited and sparse 1H MRSI data using a union‐of‐subspaces model
Ma C, Lam F, Johnson C, Liang Z. Removal of nuisance signals from limited and sparse 1H MRSI data using a union‐of‐subspaces model. Magnetic Resonance In Medicine 2015, 75: 488-497. PMID: 25762370, PMCID: PMC4567537, DOI: 10.1002/mrm.25635.Peer-Reviewed Original ResearchMeSH KeywordsAdipose TissueAlgorithmsBody WaterBrainHealthy VolunteersHumansImage EnhancementMagnetic Resonance Spectroscopy
2014
Design of multidimensional Shinnar–Le Roux radiofrequency pulses
Ma C, Liang Z. Design of multidimensional Shinnar–Le Roux radiofrequency pulses. Magnetic Resonance In Medicine 2014, 73: 633-645. PMID: 24578212, PMCID: PMC4147023, DOI: 10.1002/mrm.25179.Peer-Reviewed Original Research
2012
Reduced field‐of‐view excitation using second‐order gradients and spatial‐spectral radiofrequency pulses
Ma C, Xu D, King K, Liang Z. Reduced field‐of‐view excitation using second‐order gradients and spatial‐spectral radiofrequency pulses. Magnetic Resonance In Medicine 2012, 69: 503-508. PMID: 22489022, PMCID: PMC3406253, DOI: 10.1002/mrm.24259.Peer-Reviewed Original ResearchConceptsRF pulsesRF pulse lengthSpatially selective radiofrequencyReduced field-of-view imagingBloch equation simulationsField-of-view imagingPulse lengthRadiofrequency pulsesPhantom experimentsSelective radiofrequencyEquation simulationsPulseSecond-order gradientsNonlinear gradientsExcitation accuracyRegion-of-interestSpatial selectivityBlochSpatial dependencePhantom
2010
Joint design of spoke trajectories and RF pulses for parallel excitation
Ma C, Xu D, King K, Liang Z. Joint design of spoke trajectories and RF pulses for parallel excitation. Magnetic Resonance In Medicine 2010, 65: 973-985. PMID: 21413061, DOI: 10.1002/mrm.22676.Peer-Reviewed Original ResearchConceptsJoint design problemExcitation errorsTransmitting sensitivityJoint designCost function evaluationsExcitation systemDesign problemRF pulse designSelection problemMultidimensional RF pulsesExperimental resultsComputational efficiencyRF pulsesPulse designThin slice selectionEquation simulationsBloch equation simulationsSequential selectionConventional methodsSpoke locationExcitation patternsK-spacePulseFunction evaluationsLength limit