2023
Quantifying velopharyngeal motion variation in speech sound production using an audio-informed dynamic MRI atlas
Xing F, Jin R, Gilbert I, El Fakhri G, Perry J, Sutton B, Woo J. Quantifying velopharyngeal motion variation in speech sound production using an audio-informed dynamic MRI atlas. Proceedings Of SPIE--the International Society For Optical Engineering 2023, 12464: 124642m-124642m-6. PMID: 37621417, PMCID: PMC10448831, DOI: 10.1117/12.2654082.Peer-Reviewed Original ResearchMotion fieldReal-time speechHigh-dimensional datasetsAudio waveformAtlas spaceTemporal alignmentMotion variationsDatasetMagnetic resonance imagingMotion atlasMotion differencesSpeech variationImage acquisitionTaskSpeechMotion characteristicsDynamic magnetic resonance imagingPrincipal componentsImages
2022
Manifold Learning via Linear Tangent Space Alignment (LTSA) for Accelerated Dynamic MRI With Sparse Sampling
Djebra Y, Marin T, Han P, Bloch I, Fakhri G, Ma C. Manifold Learning via Linear Tangent Space Alignment (LTSA) for Accelerated Dynamic MRI With Sparse Sampling. IEEE Transactions On Medical Imaging 2022, 42: 158-169. PMID: 36121938, PMCID: PMC10024645, DOI: 10.1109/tmi.2022.3207774.Peer-Reviewed Original ResearchConceptsSpace alignmentSampled k-space dataState-of-the-art methodsIntrinsic low-dimensional manifold structureNumerical simulation studyLow-dimensional manifold structureState-of-the-artLinear subspace modelSparsity modelModel-based frameworkSubspace modelManifold structureMathematical modelManifold modelSparse samplingImage reconstructionMRI applicationsDynamic magnetic resonance imagingSpatiotemporal signalsSpatial resolutionPerformanceSimulation studyImagesMethodSparsity
2021
Muscle strain analysis from diffusion tractography and dynamic magnetic resonance imaging of the moving tongue
Xing F, Liu X, Reese T, Stone M, Wedeen V, Prince J, Fakhri G, Woo J. Muscle strain analysis from diffusion tractography and dynamic magnetic resonance imaging of the moving tongue. The Journal Of The Acoustical Society Of America 2021, 150: a190-a190. DOI: 10.1121/10.0008082.Peer-Reviewed Original ResearchFiber directionDynamic magnetic resonance imagingMagnetic resonance imagingStrain computationSusceptible to numerical errorsStrain estimationStrain tensorFiber geometryMuscle fiber directionStrain valuesNumerical errorsMotion fieldExtract strainsMuscle activation patternsMotion timeResonance imagingDMRI spaceStrain analysis
2019
Analysis of genioglossus-centered tongue muscle function groups from dynamic magnetic resonance imaging
Xing F, Stone M, Goldsmith T, Prince J, Fakhri G, Woo J. Analysis of genioglossus-centered tongue muscle function groups from dynamic magnetic resonance imaging. The Journal Of The Acoustical Society Of America 2019, 146: 3086-3086. DOI: 10.1121/1.5137722.Peer-Reviewed Original ResearchMuscle functional groupsSpeech motor controlMotor controlInternal tongue musclesMuscle motionInternal musclesTongue muscle functionMuscle functionMuscle locationMotion patternsFunctional groupsMuscleDynamic magnetic resonance imagingFunctional lossDynamic magnetic resonanceMagnetic resonance imagingExtract motionCooperation patternsNormal controlsGenioglossusDigastric muscleUnique groupGroupResonance imagingClinical observations