2024
Constrained 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
2017
An Efficient Reconstruction Algorithm Based on the Alternating Direction Method of Multipliers for Joint Estimation of ${R}_{{2}}^{*}$ and Off-Resonance in fMRI
Hu C, Reeves S, Peters D, Twieg D. An Efficient Reconstruction Algorithm Based on the Alternating Direction Method of Multipliers for Joint Estimation of ${R}_{{2}}^{*}$ and Off-Resonance in fMRI. IEEE Transactions On Medical Imaging 2017, 36: 1326-1336. PMID: 28207389, DOI: 10.1109/tmi.2017.2667698.Peer-Reviewed Original ResearchConceptsReduction of distortionAir-tissue interfaceOff resonanceGeometric distortionK-space trajectoriesK-space centerEfficient reconstruction algorithmImproved image qualityJoint mappingReconstruction efficiencyResonanceJoint estimationDirection methodComplicated cost functionsCorresponding reconstructionsMotion artifactsReconstruction algorithmOptimization stepCost functionSame accuracyDistortionReconstruction timeImage qualityNew algorithmAlternating Direction Method