2021
Assessment of test-retest reproducibility of [18F]SynVesT-1, a novel radiotracer for PET imaging of synaptic vesicle glycoprotein 2A
Li S, Naganawa M, Pracitto R, Najafzadeh S, Holden D, Henry S, Matuskey D, Emery PR, Cai Z, Ropchan J, Nabulsi N, Carson RE, Huang Y. Assessment of test-retest reproducibility of [18F]SynVesT-1, a novel radiotracer for PET imaging of synaptic vesicle glycoprotein 2A. European Journal Of Nuclear Medicine And Molecular Imaging 2021, 48: 1327-1338. PMID: 33416954, DOI: 10.1007/s00259-020-05149-3.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsBrainFluorine RadioisotopesGlycoproteinsPositron-Emission TomographyPyridinesPyrrolidinonesRadiopharmaceuticalsReproducibility of ResultsSynaptic VesiclesConceptsTest-retest reproducibilityTime-activity curvesBPND valuesNonhuman primatesAbsolute test-retest variabilitySynaptic vesicle glycoprotein 2AHigh brain uptakeNon-displaceable binding potentialExcellent test-retest reproducibilityGray matter areasHealthy human subjectsHigh uptakeTest-retest variabilityDynamic PET scanningTest-retest reliabilityBrain uptakeDistribution volume valuesCentrum semiovaleUrinary bladderOne-tissue compartment modelMaximum SUVPET scanningPET scansTracer uptakeBrain disorders
2018
Evaluation of Pancreatic VMAT2 Binding with Active and Inactive Enantiomers of [18F]FP-DTBZ in Healthy Subjects and Patients with Type 1 Diabetes
Naganawa M, Lim K, Nabulsi NB, Lin SF, Labaree D, Ropchan J, Herold KC, Huang Y, Harris P, Ichise M, Cline GW, Carson RE. Evaluation of Pancreatic VMAT2 Binding with Active and Inactive Enantiomers of [18F]FP-DTBZ in Healthy Subjects and Patients with Type 1 Diabetes. Molecular Imaging And Biology 2018, 20: 835-845. PMID: 29468404, PMCID: PMC6533199, DOI: 10.1007/s11307-018-1170-6.Peer-Reviewed Original ResearchConceptsVesicular monoamine transporter type 2Non-displaceable uptakeHealthy controlsSUV ratioType 1 diabetes mellitus groupInactive enantiomerDiabetes mellitus groupBeta-cell massFirst human studyGroup differencesPositron emission tomography (PET) radiotracerTransporter type 2Mellitus groupVT valuesSignificant group differencesT1DM patientsRenal cortexHealthy subjectsPurposePrevious studiesHuman studiesUptake valueType 2Separate daysDistribution volumeReference SUV
2017
Novel 18F-Labeled κ-Opioid Receptor Antagonist as PET Radiotracer: Synthesis and In Vivo Evaluation of 18F-LY2459989 in Nonhuman Primates
Li S, Cai Z, Zheng MQ, Holden D, Naganawa M, Lin SF, Ropchan J, Labaree D, Kapinos M, Lara-Jaime T, Navarro A, Huang Y. Novel 18F-Labeled κ-Opioid Receptor Antagonist as PET Radiotracer: Synthesis and In Vivo Evaluation of 18F-LY2459989 in Nonhuman Primates. Journal Of Nuclear Medicine 2017, 59: 140-146. PMID: 28747521, PMCID: PMC5750518, DOI: 10.2967/jnumed.117.195586.Peer-Reviewed Original ResearchConceptsPET radiotracersNonhuman primatesTime-activity curvesHigh specific binding signalsΚ-opioid receptor antagonistCentral nervous system disordersFast tissue kineticsBrain time-activity curvesCaudate/putamenNervous system disordersΚ-opioid receptorsRegional binding potentialPeak uptake timeRegional distribution volumesAntagonist radiotracersReceptor antagonistFrontal cortexNovel 18FRegional time-activity curvesSystem disordersNovel radioligandPET scansSpecific binding signalsTemporal cortexMonkey brain
2016
Evaluation of pancreatic VMAT2 binding with active and inactive enantiomers of 18F-FP-DTBZ in baboons
Naganawa M, Lin SF, Lim K, Labaree D, Ropchan J, Harris P, Huang Y, Ichise M, Carson RE, Cline GW. Evaluation of pancreatic VMAT2 binding with active and inactive enantiomers of 18F-FP-DTBZ in baboons. Nuclear Medicine And Biology 2016, 43: 743-751. PMID: 27673755, PMCID: PMC5248981, DOI: 10.1016/j.nucmedbio.2016.08.018.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsFemaleFluorine RadioisotopesKineticsPancreasPapioProtein BindingStereoisomerismTetrabenazineVesicular Monoamine Transport ProteinsConceptsRenal cortexPositron emission tomographyInactive enantiomerRadiometabolite fractionΒ-cell massHuman β-cell massNon-displaceable bindingEx vivo studyF-FPLow inter-subject variabilityPET scansDTBZ bindingSpleen uptakeDistribution volumeEmission tomographySpleenPancreasDTBZCortexVivo studiesTissue samplesInter-subject variabilityHigh uptakePET signalRadiometabolites
2013
Event‐by‐event respiratory motion correction for PET with 3D internal‐1D external motion correlation
Chan C, Jin X, Fung EK, Naganawa M, Mulnix T, Carson RE, Liu C. Event‐by‐event respiratory motion correction for PET with 3D internal‐1D external motion correlation. Medical Physics 2013, 40: 112507. PMID: 24320466, DOI: 10.1118/1.4826165.Peer-Reviewed Original ResearchMeSH KeywordsCarcinoma, Non-Small-Cell LungFluorine RadioisotopesHealthy VolunteersHumansHypoxiaImage Processing, Computer-AssistedImaging, Three-DimensionalInsulin-Secreting CellsKidneyLung NeoplasmsMisonidazoleMovementPancreasPositron-Emission TomographyRegression AnalysisReproducibility of ResultsRespirationSignal Processing, Computer-AssistedTetrabenazineX-Ray Microtomography