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
2020
Accelerating MRI Reconstruction on TPUs
Lu T, Marin T, Zhuo Y, Chen Y, Ma C. Accelerating MRI Reconstruction on TPUs. 2020, 00: 1-9. DOI: 10.1109/hpec43674.2020.9286192.Peer-Reviewed Original ResearchTensor Processing UnitK-space dataData decompositionMeasured k-space dataImage reconstructionAccelerated MRI reconstructionGoogle’s Tensor Processing UnitMR image reconstructionScientific computing problemsAlternating direction methodMachine learning applicationsReconstruction methodImage reconstruction methodDiscrete Fourier transformSparsifying transformCompressive sensingFourier transform operationSparsity constraintMRI reconstructionLearning applicationsCommunication timeNetwork topologyProcessing unitMatrix multiplicationComputational problems
2013
Generalization Evaluation of Machine Learning Numerical Observers for Image Quality Assessment
Kalayeh M, Marin T, Brankov J. Generalization Evaluation of Machine Learning Numerical Observers for Image Quality Assessment. IEEE Transactions On Nuclear Science 2013, 60: 1609-1618. PMID: 25346545, PMCID: PMC4207371, DOI: 10.1109/tns.2013.2257183.Peer-Reviewed Original ResearchImage quality assessmentChannelized Hotelling observerHuman observer performanceVector machineMachine learningHuman observersTask-based evaluationEvaluation of medical imagesKernel-based regression modelsSupport vector machineInternal noise modelRelevance vector machineReduce model complexityMachine-learning frameworkBayesian machine-learning frameworkGeneralization performanceMedical imagesDetection taskQuality assessmentReconstructed imagesComputation timeHotelling observerNoise modelReconstruction methodModel complexity