2001
Absolute Activity Quantitation From Projections Using an Analytical Approach: Comparison With Iterative Methods in Tc-99M and I-123 Brain SPECT
Fakhri G, Kijewski M, Moore S. Absolute Activity Quantitation From Projections Using an Analytical Approach: Comparison With Iterative Methods in Tc-99M and I-123 Brain SPECT. IEEE Transactions On Nuclear Science 2001, 48: 768. DOI: 10.1109/23.940161.Peer-Reviewed Original ResearchVariable collimator responseI-123 studiesOrdered subsets-expectation maximizationI-123Tc-99mTc-99Brain phantomAttenuation correctionAnthropomorphic brain phantomDigital brain phantomTc-99m studiesMonte Carlo simulated projectionsCollimator responseActivity quantitationPathological patientsBrain structuresBrain SPECTActivity distributionPoor spatial resolutionSPECT activityQuantitative accuracyFitting procedurePartial volume effectsCaudate nucleusCorpus callosumAbsolute activity quantitation in simultaneous 123I/99mTc brain SPECT.
El Fakhri G, Moore S, Maksud P, Aurengo A, Kijewski M. Absolute activity quantitation in simultaneous 123I/99mTc brain SPECT. Journal Of Nuclear Medicine 2001, 42: 300-8. PMID: 11216530.Peer-Reviewed Original ResearchMeSH KeywordsAlzheimer DiseaseBenzamidesBrainCerebellumCerebral CortexCerebrovascular CirculationCorpus CallosumHumansIodine RadioisotopesMonte Carlo MethodNeural Networks, ComputerParkinson DiseasePhantoms, ImagingPutamenPyrrolidinesRadiopharmaceuticalsSensitivity and SpecificityTechnetium Tc 99m ExametazimeTomography, Emission-Computed, Single-PhotonConceptsOrdered-subset expectation maximizationDistance-dependent collimator responseActivity quantitationActivity distributionIterative ordered-subsets expectation maximizationZubal brain phantomAsymmetric windowsSimulated normal populationPathological studiesDecay photonsBrain SPECTCollimator responseNonuniform attenuationDual-isotope imagingBrain phantomMonte Carlo simulationsCorpus callosumNormal populationPartial volume effectsCarlo simulationsCortical lobesAssessment of brain perfusionScatteringCross-talkBrain perfusion
2000
Absolute activity quantitation from projections using an analytical approach: comparison with iterative methods in brain SPECT
Fakhri G, Kijewski M, Moore S. Absolute activity quantitation from projections using an analytical approach: comparison with iterative methods in brain SPECT. 2011 IEEE Nuclear Science Symposium Conference Record 2000, 3: 18/7-1811 vol.3. DOI: 10.1109/nssmic.2000.949215.Peer-Reviewed Original ResearchVariable collimator responseI-123 studiesI-123Tc-99Attenuation correctionTc-99mBrain SPECTDigital brain phantomTc-99m studiesMonte Carlo simulated projectionsCollimator responseActivity quantitationActivity estimationBrain phantomOSEM algorithmBrain structuresActivity distributionAccurate quantitationPoor spatial resolutionSPECT activityFitting procedurePartial volume effectsCaudate nucleusCorpus callosumSpatial resolution