2014
Novel Cost-Effective and High-Performance Modular Detectors for Emission Tomography Systems
Sabet H, El-Fakhri G. Novel Cost-Effective and High-Performance Modular Detectors for Emission Tomography Systems. 2014, 1-3. DOI: 10.1109/nssmic.2014.7430755.Peer-Reviewed Original ResearchLaser induced optical barriersScintillation light spreadIncident gamma raysInter-pixel gapEmission tomography systemSpatial resolutionScintillator arrayGamma raysOptical barrierMechanical pixelationAnimal PETCE arrayLow packing fractionScintillationSmall-animal PETTomography systemSPECT imagesCross-sectionPixel separationArray fabricationLYSOPacking fractionRaysResolutionProcess yield
2007
Comparison of Brain PET and Sequential and Simultaneous Dual-isotope SPECT for Estimation Tasks in Normal and Parkinson Subjects
Trott C, Fakhri G. Comparison of Brain PET and Sequential and Simultaneous Dual-isotope SPECT for Estimation Tasks in Normal and Parkinson Subjects. 2007, 5: 3616-3620. DOI: 10.1109/nssmic.2007.4436906.Peer-Reviewed Original ResearchDopamine transporterEarly stages of PDDual-isotope SPECTStages of PDSequential SPECTDisease stageSimultaneous dual-isotope studyStriatal sizeBrain functionImprove patient managementEstimation taskDual-isotope studiesBrain PETDopamineClinical symptomsParkinson's diseasePatient managementSPECT imagesSpecific bindingMotor functionSPECTBrainEarly detectionActivity concentrationsIdentical physiological conditions
2004
A general-spectral method for improved quantitative SPECT imaging of indium-111
Moore S, Park M, Fakhri G, Gerbaudo V, Zimmerman R. A general-spectral method for improved quantitative SPECT imaging of indium-111. 2004, 6: 3682-3684. DOI: 10.1109/nssmic.2004.1466680.Peer-Reviewed Original ResearchRadiotherapy treatment planningList-mode dataFree of scatterQuantitative SPECT imagingScatter compensation methodsList-mode acquisitionDown-scatterScattered photonsPhoton scatteringPhotopeakQuantitative SPECTOSEM reconstructionSPECT imagesLeastsquares procedureDose specificationAttenuation projectionNoisy projectionsScatteringTreatment planningSphere activitySphere locationIndium-111PhotonsContrast valuesSphere position
2003
Performance of Simultaneous and Sequential Tc-99m/I-123 SPECT Imaging in Estimation of Striatal Activity
Kijewski M, Fakhri G, Moore S. Performance of Simultaneous and Sequential Tc-99m/I-123 SPECT Imaging in Estimation of Striatal Activity. 2003, 5: 3134-3136. DOI: 10.1109/nssmic.2003.1352561.Peer-Reviewed Original Research
2001
Realistic Monte Carlo Simulation of Ga-67 SPECT Imaging
Moore S, El Fakhri G. Realistic Monte Carlo Simulation of Ga-67 SPECT Imaging. IEEE Transactions On Nuclear Science 2001, 48: 720. DOI: 10.1109/23.940153.Peer-Reviewed Original ResearchRealistic Monte Carlo simulationsNumerical torso phantomLead X-raysMonte Carlo programPhoton emission energyPoisson noise realizationsGa-67 SPECT imagingCollimator penetrationDetector resolutionEnergy windowRSD phantomPhoton propagationPhoton scatteringTorso phantomHeart/thorax phantomAttenuation mapEnergy distributionEmission energyImproved variance reductionSPECT imagesPhantomGa-67 studiesNoise realizationsScatteringAxillary lymph nodesComparative Assessment of Energy-Based Methods of Compensating for Scatter and Lead X-Rays in Ga-67 SPECT Imaging
Moore S, Fakhri G, Maksud P. Comparative Assessment of Energy-Based Methods of Compensating for Scatter and Lead X-Rays in Ga-67 SPECT Imaging. 2001, 4: 2197-2198. DOI: 10.1109/nssmic.2001.1009260.Peer-Reviewed Original ResearchLead X-raysGa-67Energy windowArtificial neural networkGa-67 SPECT imagingSPECT imagesHigh-energy contaminationGa-67 SPECTPoisson noise realizationsActivity estimation taskTumor activity concentrationAnthropomorphic phantomEvaluable tumorsGS methodTumorMean square errorData setsOrgan uptakeProjection imagesLymphoma studiesNeural networkPixel valuesX-raySpherical tumorNoise realizations