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. 2018 May 12;45(9):1605–1617. doi: 10.1007/s00259-018-4012-5

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© The Author(s) 2018

Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 3 — Chord diagram (a) and scatterplots (b–d) showing the relationships between the binding (BP_ND) of the tau tracers ¹¹C-ΤΗΚ5351 and ¹¹C-PBB3, and the amyloid-beta tracer ¹¹C-AZD2184. The results presented were derived from data without correction for the partial volume effect. The weight of the strings in the chord diagram represents the strength of the statistically significant Spearman’s regional correlations within or between tracers (grey and blue strings, respectively). Open circles patients with prodromal Alzheimer’s disease, closed circles patients with Alzheimer’s disease dementia (rho Spearman’s rho). *p < 0.05