2022
Measuring strain in diffusion-weighted data using tagged magnetic resonance imaging
Xing F, Liu X, Reese T, Stone M, Wedeen V, Prince J, El Fakhri G, Woo J. Measuring strain in diffusion-weighted data using tagged magnetic resonance imaging. Proceedings Of SPIE--the International Society For Optical Engineering 2022, 12032: 1203205-1203205-7. PMID: 36777787, PMCID: PMC9911263, DOI: 10.1117/12.2610989.Peer-Reviewed Original ResearchMR spaceMotion fieldDeep neural networksEstimated motion fieldNeural networkDiffusion-weighted dataMedical imagesDynamic MR dataAlgorithm workflowStatic imagesDeformable organsTag dataData lack informationDiffeomorphic registrationEstimated strain valuesDiffusion tractographyInternal tongue musclesMR dataFiber tractographyMotion analysisTongue deformationAccurate strain measurementsMuscle fibersImaging excelsMagnetic resonance
2020
Motion correction for PET data using subspace-based real-time MR imaging in simultaneous PET/MR
Marin T, Djebra Y, Han P, Chemli Y, Bloch I, Fakhri G, Ouyang J, Petibon Y, Ma C. Motion correction for PET data using subspace-based real-time MR imaging in simultaneous PET/MR. Physics In Medicine And Biology 2020, 65: 235022. PMID: 33263317, PMCID: PMC7985095, DOI: 10.1088/1361-6560/abb31d.Peer-Reviewed Original ResearchConceptsPositron emission tomography reconstructionMotion-corrected PET reconstructionsPET reconstructionMotion-corrected PET imagesIrregular respiratory motionMotion fieldMotion correction methodMotion correction approachIrregular motion patternsUndersampled k-space dataImage quality of positron emission tomographyQuality of positron emission tomographyMotion patternsLow-rank characteristicsRespiratory motionContrast-to-noise ratioEstimated motion fieldSurrogate signalsMotion correctionK-space dataImage qualityReal-time MR imagingSimultaneous PET/MRMotion artifact reductionPET/MR scanners