Abstract | BACKGROUND: OBJECTIVE: The aim of this study was to investigate whether these surrogates can be utilized as AD biomarkers. METHODS: 112 subjects (41 with MCI, 50 with probable/possible AD, 21 with other dementias) underwent dual time-point [18F]FBB PET. Data were visually and relative quantitatively (Herholz scores for the early and composite SUVRs for the late PET data) analyzed. RESULTS: In the early images AD-typical patterns were present in 42% /27% /33% of probable/possible AD/MCI/other dementia cases. In late [18F]FBB PET, 42% /29% /38% of probable/possible AD/ MCI/other dementia cases were Aβ-positive. 17% of the MCIs were categorized as "MCI due to AD-high likelihood", 44% of the probable ADs as "probable AD with high evidence of AD pathophysiological process" and 28% of the possible ADs as "possible AD with evidence of AD pathophysiological process". 27% of all subjects showed a positive diagnostic and progression biomarker. Herholz scores were lower (0.85±0.05 versus 0.88±0.04, p = 0.015) for probable/possible AD versus MCI. Composite late phase SUVRs were significantly higher (1.65±0.23 versus 1.15±0.17, p < 0.005) in Aβ-positive versus Aβ-negative patients. Herholz and MMSE scores were positively correlated (R = 0.30 p = 0.006). CONCLUSION: Dual time-point [18F]FBB PET provides dual biomarker information which enables to categorize MCI and AD dementia patients according to established diagnostic criteria. Thus, dual time-point [18F]FBB PET has great potential to supplement diagnostic dementia workups.
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Authors | Lisa Florek, Solveig Tiepolt, Matthias L Schroeter, Jörg Berrouschot, Dorothee Saur, Swen Hesse, Thies Jochimsen, Julia Luthardt, Bernhard Sattler, Marianne Patt, Karl-Titus Hoffmann, Arno Villringer, Joseph Classen, Hermann-Josef Gertz, Osama Sabri, Henryk Barthel |
Journal | Journal of Alzheimer's disease : JAD
(J Alzheimers Dis)
Vol. 66
Issue 3
Pg. 1105-1116
( 2018)
ISSN: 1875-8908 [Electronic] Netherlands |
PMID | 30400095
(Publication Type: Journal Article, Observational Study)
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Chemical References |
- Aniline Compounds
- Biomarkers
- Fluorine Radioisotopes
- Stilbenes
- 4-(N-methylamino)-4'-(2-(2-(2-fluoroethoxy)ethoxy)ethoxy)stilbene
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Topics |
- Aged
- Aged, 80 and over
- Alzheimer Disease
(diagnostic imaging)
- Aniline Compounds
- Biomarkers
- Brain
(diagnostic imaging)
- Cognitive Dysfunction
(diagnostic imaging)
- Diagnosis, Differential
- Female
- Fluorine Radioisotopes
- Humans
- Male
- Middle Aged
- Neuroimaging
(methods)
- Positron-Emission Tomography
(methods)
- Retrospective Studies
- Stilbenes
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