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(A) Surface rendering of some “regions-of-supply” of the ACN (ROS) each colored differently, the red ROS contains part of the artery and the blue ROS part of the vein. (B) Histogram of the distance values contained in the green ROS, which can be roughly related to the upper and lower bounds of the distribution of the total cross-sectional surface within this ROS starting from the entry from the arteriole into the ACN (see section 2.4.2 for details).
