2013
Dual-Tracer PET Using Generalized Factor Analysis of Dynamic Sequences
El Fakhri G, Trott C, Sitek A, Bonab A, Alpert N. Dual-Tracer PET Using Generalized Factor Analysis of Dynamic Sequences. Molecular Imaging And Biology 2013, 15: 666-674. PMID: 23636489, PMCID: PMC3812387, DOI: 10.1007/s11307-013-0631-1.Peer-Reviewed Original ResearchConceptsEmit gamma raysPositron emission tomographyNear-simultaneous imagingSingle-photon emissionBrain PET studiesGamma raysSingle-photon emission computed tomographyActivity distributionRaclopride studiesEmission computed tomographyPositron emission tomography radiopharmaceuticalsSimultaneous imagingD2 bindingFactor analysis of dynamic sequencesActivity estimationTime activity curvesRacloprideFDGRhesus monkeysEmission tomographyPET studiesActivation curveBrain metabolismEmissionSimulate human data
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
Monte 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