This data set contains the susceptibility-weighted magnitude image, reconstructed quantitative susceptibility map and two manual delineations of the venous vasculature in the cerebral cortex of four healthy individuals. The data was acquired and processed by Dr. Claudine Gauthier, Dr. Audrey Fan and Dr. Pierre-Louis Bazin at the Max Planck Institute for Human Cognitive and Brain Sciences on a Siemens Magnetom 7T scanner with a FLASH sequence, see references for details. This data set is provided under a Creative Commons Attribution-ShareAlike 4.0 International License (CC BY-SA 4.0), see license.txt for details. We ask that the use of this resource in publications and derivative works would be clearly acknowledged, and that the following article be cited: Pierre-Louis Bazin, Victoire Plessis, Audrey P. Fan, Arno Villringer, Claudine Joelle Gauthier: Vessel segmentation from quantitative susceptibility maps for local oxygenation venography. ISBI 2016: 1135-1138.