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. 2019 Dec 9;47(4):967–979. doi: 10.1007/s00259-019-04586-z

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© The Author(s) 2019

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. 2 — Tissue time-activity curves (TACs) in the lungs of healthy and IPF participants. a TACs are not corrected for tissue fraction. b TACs are corrected for tissue fraction. Healthy participants (HV in blue) and participants with IPF (IPF-test scan 1 red; IPF-retest scan 2 purple) are shown. Mean SUV and SD are illustrated