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. Author manuscript; available in PMC: 2014 Oct 24.
Published in final edited form as: Ann Biomed Eng. 2010 May 11;38(9):2851–2864. doi: 10.1007/s10439-010-0058-7

FIGURE 2.

FIGURE 2

The j,k notation used for labeling the vessel segments in a tree structure, adapted from Zamir.48 In general if j, k are the coordinates of a parent segment, then the coordinates of the two branches are j + 1,2k – 1, and j + 1,2k. respectively, the latter being the branch with the smaller diameter. In particular, if the root segment is labeled as 0,1, then the labels of its two branches will be 1,1 and 1,2, respectively, the latter being the branch with the smaller diameter.