2024
Encoding 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
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 errorIncoherenceTheory