2017
Joint estimation of activity image and attenuation sinogram using time-of-flight positron emission tomography data consistency condition filtering
Li Q, Li H, Kim K, Fakhri G. Joint estimation of activity image and attenuation sinogram using time-of-flight positron emission tomography data consistency condition filtering. Journal Of Medical Imaging 2017, 4: 023502-023502. PMID: 28466027, PMCID: PMC5405780, DOI: 10.1117/1.jmi.4.2.023502.Peer-Reviewed Original ResearchData consistency conditionsMaximum likelihood attenuation correction factorsAttenuation sinogramConsistency conditionsJoint estimationJoint log-likelihood functionPET emission dataAttenuation correction factorsTime-of-flight (TOFActive imagingJoint estimation methodLog-likelihood functionPoisson noiseReconstruction resultsAttenuation correctionSinogram filteringPrevent convergenceEmission dataSinogramPositron emission tomography dataEstimation methodComputer simulationsPositron emission tomographyIterative methodCorrection factor
2016
Penalized MLAA with Spatially-Encoded Anatomic Prior in TOF PET/MR
Kim K, Yang J, Fakhri G, Seo Y, Li Q. Penalized MLAA with Spatially-Encoded Anatomic Prior in TOF PET/MR. 2016, 1-4. DOI: 10.1109/nssmic.2016.8069514.Peer-Reviewed Original ResearchSynthetic CT imagesAlternating direction methodAttenuation correctionImage qualityMR-based attenuation correctionTOF-PET dataPET emission dataPET image qualityTime-of-flight (TOFDirection methodCost functionCT imagesPET/MR scannersNoise componentsConsistency conditionsAnatomical MRIterative processComputer simulationsPET dataMLAAPET/MR scansImagesBone signalEmission dataTOF