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
2000
Scatter and cross-talk corrections in simultaneous Tc-99m/I-123 brain SPECT using constrained factor analysis and artificial neural networks
Fakhri G, Maksud P, Kijewski M, Haberi M, Todd-Pokropek A, Aurengo A, Moore S. Scatter and cross-talk corrections in simultaneous Tc-99m/I-123 brain SPECT using constrained factor analysis and artificial neural networks. IEEE Transactions On Nuclear Science 2000, 47: 1573-1580. DOI: 10.1109/23.873018.Peer-Reviewed Original ResearchSpectral factor analysisTc-99mEnergy window methodDigital brain phantomCross-talk correctionI-123 imagingUnscattered photonsTc-99m activityBrain phantomMonte Carlo simulationsI-123Dual-isotope studiesPhotonsCarlo simulationsTc-99Simultaneous imagingAssessment of brain perfusionCross-talkBrain structuresBrain SPECTArtificial neural networkBrain perfusionPhantomClinical potentialCaudate nucleus
1999
A new correction method for cross-talk using artificial neural networks: validation in simultaneous technetium and iodine cerebral imaging
Fakhri G, Maksud P, Habert M, Todd-Pokropek A, Aurengo A. A new correction method for cross-talk using artificial neural networks: validation in simultaneous technetium and iodine cerebral imaging. 2011 IEEE Nuclear Science Symposium Conference Record 1999, 2: 1000-1004 vol.2. DOI: 10.1109/nssmic.1999.845830.Peer-Reviewed Original ResearchEnergy window methodMonte CarloHuman brain phantomI-123 imagingGeometric phantomsBrain phantomMC simulationsTc-99mCorrection methodDual-isotope studiesActivity distributionM imagesI-123PhantomAssessment of brain perfusionCross-talkRadionuclidesTc-99Cerebral imagingCorrectionBrain perfusionClinical potentialBackprojectionMonteCarloMonte Carlo evaluation of quantitation in simultaneous Tc-99m/I-123 brain SPECT using constrained spectral factor analysis
Fakhri G, Moore S, Kijewski M, Maksud P, Todd-Pokropek A. Monte Carlo evaluation of quantitation in simultaneous Tc-99m/I-123 brain SPECT using constrained spectral factor analysis. 2011 IEEE Nuclear Science Symposium Conference Record 1999, 3: 1392-1396 vol.3. DOI: 10.1109/nssmic.1999.842815.Peer-Reviewed Original ResearchSpectral factor analysisTc-99mEnergy window methodDigital brain phantomI-123 imagingUnscattered photonsTc-99m activityBrain phantomFiltered-backprojectionMonte Carlo simulationsPrimary spectraDual-isotope studiesI-123Monte Carlo evaluationPhotonsCarlo simulationsSimultaneous imagingMonteBrain structuresBrain SPECTTc-99PhantomCaudate nucleusSpectraPixel values