. Author manuscript; available in PMC: 2013 Mar 13.

Published in final edited form as: Magn Reson Med. 2011 Mar 22;66(4):1181–1191. doi: 10.1002/mrm.22885

Table 1.

Geodesic Topological Analysis (GTA) Parameters

GTA parameter	Abbreviation	Units	Description
Volume of junction	VJ	mm³	Amount of bone that a single junction is supporting
Convex hull of junction	CHJ	mm³	Encompassed space of a junction and its set of bone voxels
Junction spacing	JSp	mm	Minimum of the geodesic distances between a junction and its immediate connected junctions
Distance to junction	DJ	mm	Maximum geodesic distance between a junction and its set of assigned voxels
Junction eccentricity	JE	Unitless	Eccentricity of groups of bone voxels belonging to the same junction