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| Hauptseite > Publikationsdatenbank > Early-phase [18F]PI-2620 tau-PET imaging as a surrogate marker of neuronal injury > print |
| Hauptseite > Publikationsdatenbank > Early-phase [18F]PI-2620 tau-PET imaging as a surrogate marker of neuronal injury > print |
| 001 | 875100 | ||
| 005 | 20210130004846.0 | ||
| 024 | 7 | _ | |a 10.1007/s00259-020-04788-w |2 doi |
| 024 | 7 | _ | |a 0340-6997 |2 ISSN |
| 024 | 7 | _ | |a 1432-105X |2 ISSN |
| 024 | 7 | _ | |a 1619-7070 |2 ISSN |
| 024 | 7 | _ | |a 1619-7089 |2 ISSN |
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| 037 | _ | _ | |a FZJ-2020-01803 |
| 082 | _ | _ | |a 610 |
| 100 | 1 | _ | |a Beyer, Leonie |0 P:(DE-HGF)0 |b 0 |
| 245 | _ | _ | |a Early-phase [18F]PI-2620 tau-PET imaging as a surrogate marker of neuronal injury |
| 260 | _ | _ | |a Heidelberg [u.a.] |c 2020 |b Springer-Verl. |
| 336 | 7 | _ | |a article |2 DRIVER |
| 336 | 7 | _ | |a Output Types/Journal article |2 DataCite |
| 336 | 7 | _ | |a Journal Article |b journal |m journal |0 PUB:(DE-HGF)16 |s 1604327619_29893 |2 PUB:(DE-HGF) |
| 336 | 7 | _ | |a ARTICLE |2 BibTeX |
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| 336 | 7 | _ | |a Journal Article |0 0 |2 EndNote |
| 520 | _ | _ | |a PurposeSecond-generation tau radiotracers for use with positron emission tomography (PET) have been developed for visualization of tau deposits in vivo. For several β-amyloid and first-generation tau-PET radiotracers, it has been shown that early-phase images can be used as a surrogate of neuronal injury. Therefore, we investigated the performance of early acquisitions of the novel tau-PET radiotracer [18F]PI-2620 as a potential substitute for [18F]fluorodeoxyglucose ([18F]FDG).MethodsTwenty-six subjects were referred with suspected tauopathies or overlapping parkinsonian syndromes (Alzheimer’s disease, progressive supranuclear palsy, corticobasal syndrome, multi-system atrophy, Parkinson’s disease, multi-system atrophy, Parkinson's disease, frontotemporal dementia) and received a dynamic [18F]PI-2620 tau-PET (0–60 min p.i.) and static [18F]FDG-PET (30–50 min p.i.). Regional standardized uptake value ratios of early-phase images (single frame SUVr) and the blood flow estimate (R1) of [18F]PI-2620-PET were correlated with corresponding quantification of [18F]FDG-PET (global mean/cerebellar normalization). Reduced tracer uptake in cortical target regions was also interpreted visually using 3-dimensional stereotactic surface projections by three more and three less experienced readers. Spearman rank correlation coefficients were calculated between early-phase [18F]PI-2620 tau-PET and [18F]FDG-PET images for all cortical regions and frequencies of disagreement between images were compared for both more and less experienced readers.ResultsHighest agreement with [18F]FDG-PET quantification was reached for [18F]PI-2620-PET acquisition from 0.5 to 2.5 min p.i. for global mean (lowest R = 0.69) and cerebellar scaling (lowest R = 0.63). Correlation coefficients (summed 0.5–2.5 min SUVr & R1) displayed strong agreement in all cortical target regions for global mean (RSUVr 0.76, RR1 = 0.77) and cerebellar normalization (RSUVr 0.68, RR1 = 0.68). Visual interpretation revealed high regional correlations between early-phase tau-PET and [18F]FDG-PET. There were no relevant differences between more and less experienced readers.ConclusionEarly-phase imaging of [18F]PI-2620 can serve as a surrogate biomarker for neuronal injury. Dynamic imaging or a dual time-point protocol for tau-PET imaging could supersede additional [18F]FDG-PET imaging by indexing both the distribution of tau and the extent of neuronal injury. |
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| 773 | _ | _ | |a 10.1007/s00259-020-04788-w |0 PERI:(DE-600)2098375-X |p 2911–2922 |t European journal of nuclear medicine and molecular imaging |v 47 |y 2020 |x 1619-7089 |
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