2006
The Design and Manufacture of an Annular Variable-Focusing Collimator for Highsensitivity Brain SPECT
Ouyang J, Fakhir G, Xia W, Kijewski M, Genna S. The Design and Manufacture of an Annular Variable-Focusing Collimator for Highsensitivity Brain SPECT. IEEE Transactions On Nuclear Science 2006, 53: 2613-2618. DOI: 10.1109/tns.2006.877151.Peer-Reviewed Original ResearchFast Monte Carlo Simulation Based Joint Iterative Reconstruction for Simultaneous 99mTc/123I Brain SPECT Imaging
Ouyang J, Fakhri G, Moore S, Kijewski M. Fast Monte Carlo Simulation Based Joint Iterative Reconstruction for Simultaneous 99mTc/123I Brain SPECT Imaging. 2006, 4: 2251-2256. DOI: 10.1109/nssmic.2006.354362.Peer-Reviewed Original ResearchMC-JOSEMAW-OSEMMonte CarloFast Monte CarloIterative reconstructionOrdered-subset expectation maximizationStandard ordered subsetsIterative reconstruction algorithmScattered photonsPhoton transportSeptal penetrationAttenuation distributionPhysical effectsIdentical physiological conditionsPatient-specific activityReconstructed imagesReconstruction algorithmActivity estimationComptonRoot mean square errorPhotonsCorrection methodCollimatorBrain perfusionDetector
2005
Performance of a novel collimator for high‐sensitivity brain SPECT
Fakhri G, Ouyang J, Zimmerman R, Fischman A, Kijewski M. Performance of a novel collimator for high‐sensitivity brain SPECT. Medical Physics 2005, 33: 209-215. PMID: 16485427, DOI: 10.1118/1.2143140.Peer-Reviewed Original ResearchConceptsSphere activity concentrationNPW-SNRStandard collimatorSphere-to-background activity ratiosAttenuation of countsPhantom centerActivity concentrationsPoint spread functionCentral regionCollimatorPhantom studyStriatal phantomCylindrical backgroundResolution recoveryPhantomSpherical lesionsRamp filterCrystal surfaceSpread functionSignal-to-noise ratioCentral brain structuresFitting imageHealthy volunteersBrain SPECTSphere activity
2004
Chapter 9 Annular Single-crystal Emission Tomography Systems
Genna S, Ouyang J, Xia W. Chapter 9 Annular Single-crystal Emission Tomography Systems. 2004, 169-178. DOI: 10.1016/b978-012744482-6.50012-0.Peer-Reviewed Original ResearchDepth of interactionRotating scintillation cameraAnnular crystalHigh-resolution small animal SPECTMultiple-pinhole collimatorScintillation cameraEmission tomography systemSmall-animal SPECTPulse pileSingle-photon emissionSPECT resolutionCollimatorAnimal SPECTSingle crystalsDedicated cameraSignal-to-noise ratioCamera geometryPositron emission tomographyTomography systemPET sensitivityCameraCamera systemCrystalBreast imagingParallax