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 callosum