2024
Low-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 ResearchEncoding 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
2021
Preliminary Evaluation of Phenotypic Features from Clinical Interactions
Barron D, Heisig S, Agurto C, Norel R, Quagan B, Powers A, Baker J, Constable T, Cecchi G, Krystal J. Preliminary Evaluation of Phenotypic Features from Clinical Interactions. Journal Of Pain 2021, 22: 594. DOI: 10.1016/j.jpain.2021.03.068.Peer-Reviewed Original ResearchCommon software toolsChannel audioSoftware toolsFeature dataGaze featuresLack of granularityFeature spaceAction unitsSpeech featuresTraining biasesDigital featuresCross-validation approachMovement featuresClinical progress notesFacial featuresLinguistic featuresPreliminary evaluationAudioPhenotypic informationPatient trajectoriesFeaturesGranularityCameraAlgorithmProgress notes
1994
Development and evaluation of tracking algorithms for cardiac wall motion analysis using phase velocity MR imaging
Constable R, Rath K, Sinusas A, Gore J. Development and evaluation of tracking algorithms for cardiac wall motion analysis using phase velocity MR imaging. Magnetic Resonance In Medicine 1994, 32: 33-42. PMID: 8084235, DOI: 10.1002/mrm.1910320106.Peer-Reviewed Original Research
1991
A quantitative comparison of the TERA modeling and DFT magnetic resonance image reconstruction techniques
Smith M, Nichols S, Constable R, Henkelman R. A quantitative comparison of the TERA modeling and DFT magnetic resonance image reconstruction techniques. Magnetic Resonance In Medicine 1991, 19: 1-19. PMID: 2046524, DOI: 10.1002/mrm.1910190102.Peer-Reviewed Original ResearchConceptsImage reconstruction techniquesModeling techniquesData reconstructionImage reconstructionDiscrete Fourier transform algorithmReconstruction approachAlternative reconstruction methodTransform algorithmSuccess of modelingData setsReconstruction methodModeling methodFourier transform algorithmMagnetic resonance imagesData lengthReconstruction techniqueFinite data lengthResonance imagesProblem areasTruncation artifactsModelingAlgorithmArtifactsTwo-dimensional modelingOne-dimensional modeling