2020
Penalized Parametric PET Image Estimation Using Local Linear Fitting
Kim K, Gong K, Moon S, Fakhri G, Normandin M, Li Q. Penalized Parametric PET Image Estimation Using Local Linear Fitting. IEEE Transactions On Radiation And Plasma Medical Sciences 2020, 4: 750-758. DOI: 10.1109/trpms.2020.3024123.Peer-Reviewed Original ResearchReconstructed framesImage estimationGraphical modelsFull-dose imagesStatic imagesParametric imaging methodFunction extractionPhysiological informationImagesPositron emission tomographyLogan graphical modelConventional methodsPatient studiesKinetic parametersSuboptimalityFrameDynamic imagingTwo-tissue compartment model
2015
Penalized Direct Estimation of Parametric Images in PET
Kim K, Fakhri G, Li Q. Penalized Direct Estimation of Parametric Images in PET. 2015, 1-4. DOI: 10.1109/nssmic.2015.7582182.Peer-Reviewed Original ResearchAlternating direction methodDirection methodHigh noise varianceIterative reconstruction processKinetic parameter imagesTV regularizationNoise varianceDirect reconstructionPhysiological kinetic parametersDirection estimationReconstruction processNeighboring voxelsCost functionRidge regressionRaw measurementsConventional direct methodComputer simulationsDynamic imagingSplitting methodKinetic parametersImagesBrain phantomAccurate parametric imagesPoisson likelihoodPotential images