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. 2018 Nov 15;8:100. doi: 10.1186/s13550-018-0450-0

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© The Author(s). 2018

Open AccessThis 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. 1 — Examples of [¹⁸F]FE-PE2I PET and [¹²³I]FP-CIT SPECT images in the same individuals. Representative images of FE-PE2I PET (parametric DVR images) and FP-CIT SPECT (SUR images) of the same two subjects. Healthy control examined A1 with FE-PE2I and A2 with FP-CIT. Patient with parkinsonian syndrome since 6 months examined B1 with FE-PE2I PET and B2 with FP-CIT SPECT. PET image scale: DVR (= BP_ND + 1). SPECT image scale: activity uptake in striatum divided by cerebellum activity