2023
Super-resolution in brain positron emission tomography using a real-time motion capture system
Chemli Y, Tétrault M, Marin T, Normandin M, Bloch I, El Fakhri G, Ouyang J, Petibon Y. Super-resolution in brain positron emission tomography using a real-time motion capture system. NeuroImage 2023, 272: 120056. PMID: 36977452, PMCID: PMC10122782, DOI: 10.1016/j.neuroimage.2023.120056.Peer-Reviewed Original ResearchConceptsBrain positron emission tomographySuper-resolutionEvent-by-event basisReal-time motion capture systemSR reconstruction methodTracking cameraVisualization of small structuresPET reconstruction algorithmMoving phantomMeasure target motionLine profilesPET/CT scannerMeasured shiftsImprove image resolutionMotion capture systemMotion tracking devicePositron emission tomographyReconstruction algorithmSpatial resolutionMeasured linesPhantomReal-timeEstimation frameworkIncreased spatial resolutionReconstruction method
2011
Chapter 44 Using GPUs to Accelerate Advanced MRI Reconstruction with Field Inhomogeneity Compensation
Zhuo Y, Wu X, Haldar J, Marin T, Hwu W, Liang Z, Sutton B. Chapter 44 Using GPUs to Accelerate Advanced MRI Reconstruction with Field Inhomogeneity Compensation. 2011, 709-722. DOI: 10.1016/b978-0-12-384988-5.00044-9.Peer-Reviewed Original ResearchInhomogeneity compensationNonideal physical effectsReconstruction algorithmMRI reconstruction algorithmsLoop invariant code motionFloating-point computationsMagnetic resonance imagingSingle-precision floating-point computationData acquisition timeAccurate image reconstructionSignal-to-noise ratioGPU implementationGPU kernelsMRI reconstructionSeverity of artifactsImproved trade-offFlexible diagnostic toolConstant memoryGPUCode motionImage contrastPhysical effectsImage reconstructionClinical scansAcquisition time
2010
MOTION-COMPENSATED RECONSTRUCTION OF GATED CARDIAC SPECT IMAGES USING A DEFORMABLE MESH MODEL
Marin T, Wernick M, Yang Y, Brankov J. MOTION-COMPENSATED RECONSTRUCTION OF GATED CARDIAC SPECT IMAGES USING A DEFORMABLE MESH MODEL. 2010, 520-523. DOI: 10.1109/isbi.2010.5490294.Peer-Reviewed Original ResearchDeformable mesh modelGated cardiac SPECT imagesMesh modelMotion estimation techniquesMotion trajectoryTemporal smoothness constraintMaximum-likelihood expectation-maximization algorithmExpectation-maximization algorithmEstimated motionMotion-compensated reconstructionMotion compensationLevel of noiseSmoothness constraintPixel gridTemporal constraintsTemporal filteringReconstruction algorithmReconstructed imagesMesh domainCardiac SPECT imagingAlgorithmNoise reductionTemporal correlationNoise effectsIteration