There is an error in the fourth sentence of the second paragraph of the “Image processing” subsection of the Materials and Methods. The correct sentence is: Then, the k’ 2 parameter was defined as the median value from all voxels that have a BP nd value higher than 0.05. There is an error in the third sentence of the third paragraph of the “Group differences” subsection of the Results. The correct sentence is: The region that presented the highest values was, for both groups, the Putamen (1.14 ± 0.07 for the PIB+ group and 1.13 ± 0.05 for the PIB-group). There is an error in the DOI of reference 14. The correct reference is: Gjedde A, Aanerud J, Braendgaard H, Rodell AB. Blood-brain transfer of Pittsburgh compound B in humans. Front Aging Neurosci. 2013;5: 1–9. https://doi.org/10.3389/fnagi.2013.00070. The images for Figs 4–6 are incorrectly switched. The image that appears as Fig 4 should be Fig 6; the image that appears as Fig 5 should be Fig 4, and the image that appears as Fig 6 should be Fig 5. The figure captions appear in the correct order. Please see the correct figures and their respective captions here. (Figure presented).