2010
Sparse regularization in MRI iterative reconstruction using GPUs
Zhuo Y, Sutton B, Wu X, Haldar J, Hwu W, Liang Z. Sparse regularization in MRI iterative reconstruction using GPUs. 2010, 2: 578-582. DOI: 10.1109/bmei.2010.5640008.Peer-Reviewed Original ResearchGraphics processing unitsMR image reconstructionImage reconstructionGraphics processing unit codeIncrease data accessQuadratic regularization termMemory bandwidth bottleneckSparse regularizationRegularization termData accessBandwidth bottleneckImprove image qualityComputational loadProcessing unitRegularization techniqueSpatial regularizationNeighboring voxelsAssociated with frequent communicationImage qualityField inhomogeneity effectsCPUInverse problemComputerFrequent communicationImplementation
2009
Iterative Image Reconstruction Model Including Susceptibility Gradients Combined with Z-shimming Gradients in fMRI
Zhuo Y, Sutton B. Iterative Image Reconstruction Model Including Susceptibility Gradients Combined with Z-shimming Gradients in fMRI. Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2009, 2009: 5721-5724. PMID: 19963915, DOI: 10.1109/iembs.2009.5332669.Peer-Reviewed Original ResearchConceptsSusceptibility-induced magnetic field gradientsMagnetic field gradientField gradientEffects of magnetic field gradientNear air/tissue interfacesField inhomogeneity effectsIterative reconstruction algorithmSignal lossSpiral-inIncreasing acquisition timeZ-shimMagnetic fieldAir/tissue interfacesMR signal modelMagnetic field distortionFunctional magnetic resonance imagingMagnetic susceptibility artifactsBlood oxygen levelAcquisition timeSusceptibility artifactsReconstruction algorithmField distortionImage distortionData acquisition techniquesSignal distortion