2007
Fast Analytical Modeling of Compton Scatter Using Point Clouds and Graphics Processing Unit (GPU)
Sitek A, Fakhri G, Ouyang J, Maltz J. Fast Analytical Modeling of Compton Scatter Using Point Clouds and Graphics Processing Unit (GPU). 2007, 6: 4546-4548. DOI: 10.1109/nssmic.2007.4437122.Peer-Reviewed Original ResearchGraphics processing unitsComputation timeProcessing unitPoint cloudsNVIDIA Quadro FXCalculation speedEfficient geometric modelingScattered point cloudExorbitant computation timeComputing architectureImage samplesImaging modelResolution levelsComputational frameworkComputerGraphicsComputer simulationsArchitectureRepresentationCloudImage volumesNatural advantagesComputational modelCompton scatteringAccurate model
2005
Fast Monte Carlo Estimation of Patient and Detector Scatter and Crosstalk Contamination in SPECT Imaging
Ouyang J, Moore S, Park M, Fakhri G. Fast Monte Carlo Estimation of Patient and Detector Scatter and Crosstalk Contamination in SPECT Imaging. 2005, 3: 1560-1562. DOI: 10.1109/nssmic.2005.1596616.Peer-Reviewed Original ResearchDetector effectsEnergy windowTriple-energy window methodConvolution-based forced detectionPhoton interaction pointSimulate photon interactionsLower energy windowScattering mapCompton scatteringPhoton contributionEnergy binsPhoton interactionsMultiple photonsDetector scatterImaging isotopesCoherent scatteringAttenuation phantomMonte Carlo methodPhotoelectric effectInteraction pointPhantom experimentsDetectorCrosstalk contaminationScatteringCarlo method