2024
Efficient standardization of clinical T2‐weighted images: Phase‐conjugacy e‐CAMP with projected gradient descent
Zhang H, Elsaid N, Sun H, Tagare H, Galiana G. Efficient standardization of clinical T2‐weighted images: Phase‐conjugacy e‐CAMP with projected gradient descent. Magnetic Resonance In Medicine 2024, 92: 2723-2733. PMID: 38988054, DOI: 10.1002/mrm.30214.Peer-Reviewed Original ResearchData fidelity termSignal evolution modelFidelity termGradient descentProjected GradientEfficient algorithmVirtual conjugate coilAlgorithmObjective functionMapping errorsTunable parametersLinear constraintsSampling schemeTSE dataLong echo train lengthMapsTrain lengthVirtualTurbo spin echoEcho train lengthHigh-resolutionSchemeDataBackground phaseError rangeLow-Field, Low-Cost, Point-of-Care Magnetic Resonance Imaging
Samardzija A, Selvaganesan K, Zhang H, Sun H, Sun C, Ha Y, Galiana G, Constable R. Low-Field, Low-Cost, Point-of-Care Magnetic Resonance Imaging. Annual Review Of Biomedical Engineering 2024, 26: 67-91. PMID: 38211326, DOI: 10.1146/annurev-bioeng-110122-022903.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 functionPractical utilization of nonlinear spatial encoding: Fast field mapping and FRONSAC‐wave
Zhang H, Constable R, Galiana G. Practical utilization of nonlinear spatial encoding: Fast field mapping and FRONSAC‐wave. Magnetic Resonance In Medicine 2024, 92: 1035-1047. PMID: 38651264, PMCID: PMC11209788, DOI: 10.1002/mrm.30119.Peer-Reviewed Original ResearchCombination of wavesImage qualityFrequency domainUndersampling ratesShort calibration timeG-factor mapsWave sequencesCalibration timeWave amplitudePoint spread functionImprove image qualityMapping schemeUndersampling factorsGradient trajectoriesSpread functionEncodingIn vivo human brain imagingTrajectory mappingWaveHuman brain imagingUndersamplingField mappingEncoding gradientsSparsityMapping approachClinical physiology: the crucial role of MRI in evaluation of peripheral artery disease
Elsaid N, Peters D, Galiana G, Sinusas A. Clinical physiology: the crucial role of MRI in evaluation of peripheral artery disease. AJP Heart And Circulatory Physiology 2024, 326: h1304-h1323. PMID: 38517227, PMCID: PMC11381027, DOI: 10.1152/ajpheart.00533.2023.Peer-Reviewed Original ResearchPeripheral arterial diseaseMagnetic resonance imagingArtery diseaseClinical applicationEvaluation of peripheral arterial diseaseTranslation to clinical researchPre-clinical modelsMedial vascular calcificationDiagnosis of peripheral arterial diseaseExcellent soft tissue contrastPathophysiology of peripheral arterial diseaseAssessment of peripheral arterial diseaseNoninvasive imaging toolMR imaging technologyMR imaging techniquesSoft tissue contrastMultiplanar imaging capabilityAutonomic dysfunctionMicrovascular dysfunctionRisk stratificationPeripheral neuropathyComprehensive physiological assessmentTreatment outcomesVascular calcificationTherapy planningEncoding scheme design for gradient-free, nonlinear projection imaging using Bloch-Siegert RF spatial encoding in a low-field, open MRI system
Selvaganesan K, Ha Y, Sun H, Zhang Z, Sun C, Samardzija A, Galiana G, Constable R. Encoding scheme design for gradient-free, nonlinear projection imaging using Bloch-Siegert RF spatial encoding in a low-field, open MRI system. Scientific Reports 2024, 14: 3307. PMID: 38332252, PMCID: PMC10853509, DOI: 10.1038/s41598-024-53703-y.Peer-Reviewed Original ResearchConceptsBloch-SiegertSpatial encodingBloch-Siegert shiftGradient-freeLow-field imagesLow fieldsProjection imagesPhase shiftLoop coilEncoding settingsEncoding schemeEncoding trajectoriesLow-field MR imagingSpatial resolutionImage reconstructionOptimization algorithmEncodingMRI systemShift effectHardware setupMR systemOpen MRI systemScheme designAlgorithmImages
2023
EM shielded spiral RF coil design for array coil decoupling at ultra-low field MRI
Ha Y, Selvaganesan K, Sun C, Zhang Z, Samardzija A, Sun H, Galiana G, Constable T. EM shielded spiral RF coil design for array coil decoupling at ultra-low field MRI. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/1776.Peer-Reviewed Original ResearchStop-Motion RF for Improving Spatial Resolution in Non-Linear Gradient-Free Low-Field MRI
Samardzija A, Selvaganesan K, Ha Y, Zhang Z, Sun C, Sun H, Galiana G, Constable T. Stop-Motion RF for Improving Spatial Resolution in Non-Linear Gradient-Free Low-Field MRI. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/1761.Peer-Reviewed Original ResearchA Simulation Study of the Effect of Sampling Strategy on Computation of T2 Maps
Galiana G, Elsaid N, Tagare H. A Simulation Study of the Effect of Sampling Strategy on Computation of T2 Maps. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/1634.Peer-Reviewed Original ResearchA novel method to calculate standardized quantitative maps from a single T2-weighted image: A feasibility study.
Elsaid N, Tagare H, Galiana G. A novel method to calculate standardized quantitative maps from a single T2-weighted image: A feasibility study. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/0288.Peer-Reviewed Original ResearchDiffusion Weighted Imaging using a Prostate Nonlinear Gradient Coil
Elsaid N, Nixon T, Dewdney A, De Simone A, Fettahoglu A, Galiana G. Diffusion Weighted Imaging using a Prostate Nonlinear Gradient Coil. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/4575.Peer-Reviewed Original ResearchMulti-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 ResearchMulti-shell versus single-shell cardiac diffusion imaging
Elsaid N, Peters D, Galiana G, Sinusas A. Multi-shell versus single-shell cardiac diffusion imaging. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/4288.Peer-Reviewed Original ResearchReproducibility of field from an easily installed insert gradient coil for prostate DWI
Zhang Z, Elsaid N, Nixon T, Dewdney A, Galiana G. Reproducibility of field from an easily installed insert gradient coil for prostate DWI. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/4578.Peer-Reviewed Original ResearchSVD Compression for Nonlinear Encoding Imaging with Model-based Deep Learning Reconstruction
Zhang Z, Selvaganesan K, Ha Y, Sun C, Samardzija A, Sun H, Galiana G, Constable R. SVD Compression for Nonlinear Encoding Imaging with Model-based Deep Learning Reconstruction. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/0833.Peer-Reviewed Original ResearchDeep learning reconstructionModel-based networkLearning reconstructionEncoded imageGPU memoryRegularization termEncoding matrixGraph nodesGaussian noiseSimulated Gaussian noiseBloch-SiegertEncoding dimensionEncodingSVDModel partPhysical model partNetworkGPUMR scannerNonlinear caseNodesRedundancyReconstructionCompressionNoiseAccelerated phase-contrast for diastolic function evaluation using k-t PCA methods
Xiang J, Lamy J, Galiana G, Peters D. Accelerated phase-contrast for diastolic function evaluation using k-t PCA methods. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/3659.Peer-Reviewed Original ResearchEddy-current characterization and pre-emphasis on a compact inside-out nonlinear gradient
Fettahoglu A, Zhang Z, Elsaid N, Dewdney A, Galiana G. Eddy-current characterization and pre-emphasis on a compact inside-out nonlinear gradient. Proceedings Of The International Society For Magnetic Resonance In Medicine ... Scientific Meeting And Exhibition. 2023 DOI: 10.58530/2023/4431.Peer-Reviewed Original Research
2014
Pseudo‐random center placement O‐space imaging for improved incoherence compressed sensing parallel MRI
Tam LK, Galiana G, Stockmann JP, Tagare H, Peters DC, Constable RT. Pseudo‐random center placement O‐space imaging for improved incoherence compressed sensing parallel MRI. Magnetic Resonance In Medicine 2014, 73: 2212-2224. PMID: 25042143, PMCID: PMC4297603, DOI: 10.1002/mrm.25364.Peer-Reviewed Original ResearchConceptsO-space imagingCompressed SensingMean squared errorSquared errorConvex programIncoherence parameterSparsity levelSEM fieldsO spaceField modulationMaximum interferenceCS approachSparse domainNominal valueReceiver arrayErrorParallel MRIImage reconstructionAppropriate samplingSingle pointReduced errorIncoherenceTheoryAlgebraic reconstruction technique for parallel imaging reconstruction of undersampled radial data: Application to cardiac cine
Li S, Chan C, Stockmann JP, Tagare H, Adluru G, Tam LK, Galiana G, Constable RT, Kozerke S, Peters DC. Algebraic reconstruction technique for parallel imaging reconstruction of undersampled radial data: Application to cardiac cine. Magnetic Resonance In Medicine 2014, 73: 1643-1653. PMID: 24753213, PMCID: PMC4504217, DOI: 10.1002/mrm.25265.Peer-Reviewed Original Research