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Comparability of [F-18]THK5317 and [C-11]PIB blood flow proxy images with [F-18]FDG positron emission tomography in Alzheimer's disease
Karolinska Inst, Dept NVS, Stockholm, Sweden..
Karolinska Inst, Dept NVS, Stockholm, Sweden..
Karolinska Inst, Dept NVS, Stockholm, Sweden..
Karolinska Inst, Dept NVS, Stockholm, Sweden..
Vise andre og tillknytning
2017 (engelsk)Inngår i: Journal of Cerebral Blood Flow and Metabolism, ISSN 0271-678X, E-ISSN 1559-7016, Vol. 37, nr 2, s. 740-749Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

For amyloid positron emission tomography tracers, the simplified reference tissue model derived ratio of influx rate in target relative to reference region (R-1) has been shown to serve as a marker of brain perfusion, and, due to the strong coupling between perfusion and metabolism, as a proxy for glucose metabolism. In the present study, 11 prodromal Alzheimer's disease and nine Alzheimer's disease dementia patients underwent [F-18]THK5317, carbon-11 Pittsburgh Compound-B ([C-11]PIB), and 2-deoxy-2-[F-18]fluoro-D-glucose ([F-18]FDG) positron emission tomography to assess the possible use of early-phase [F-18]THK5317 and R-1 as proxies for brain perfusion, and thus, for glucose metabolism. Discriminative performance (prodromal vs Alzheimer's disease dementia) of [F-18]THK5317 (early-phase SUVr and R-1) was compared with that of [C-11]PIB (early-phase SUVr and R-1) and [F-18]FDG. Strong positive correlations were found between [F-18]THK5317 (early-phase, R-1) and [F-18]FDG, particularly in frontal and temporoparietal regions. Differences in correlations between early-phase and R-1 ([F-18]THK5317 and [C-11]PIB) and [F-18]FDG, were not statistically significant, nor were differences in area under the curve values in the discriminative analysis. Our findings suggest that early-phase [F-18]THK5317 and R-1 provide information on brain perfusion, closely related to glucose metabolism. As such, a single positron emission tomography study with [F-18]THK5317 may provide information about both tau pathology and brain perfusion in Alzheimer's disease, with potential clinical applications.

sted, utgiver, år, opplag, sider
SAGE PUBLICATIONS INC , 2017. Vol. 37, nr 2, s. 740-749
Emneord [en]
Alzheimer's disease, early-phase carbon-11 Pittsburgh Compound-B, early-phase [F-18]THK5317 positron emission tomography, 2-deoxy-2-[F-18]fluoro-D-glucose, simplified reference tissue model R-1
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Identifikatorer
URN: urn:nbn:se:uu:diva-319114DOI: 10.1177/0271678X16645593ISI: 000393903900029PubMedID: 27107028OAI: oai:DiVA.org:uu-319114DiVA, id: diva2:1086554
Forskningsfinansiär
Swedish Research Council, 05817Swedish Foundation for Strategic Research The Karolinska Institutet's Research FoundationThe Swedish Brain FoundationThe Dementia Association - The National Association for the Rights of the DementedEU, European Research Council, HEALTH-F2-2011-278850Stiftelsen Gamla TjänarinnorWenner-Gren FoundationsTilgjengelig fra: 2017-04-03 Laget: 2017-04-03 Sist oppdatert: 2017-11-29bibliografisk kontrollert

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