A Framework for the Automatic Generation of Surface Topologies for Abdominal Aortic Aneurysm Models

. Author manuscript; available in PMC: 2012 Jan 1.

Published in final edited form as: Ann Biomed Eng. 2010 Sep 18;39(1):249–259. doi: 10.1007/s10439-010-0165-5

3-D shape indices.

Nomenclature

Name

Equation

IPR

Isoperimetric ratio

IPR = \frac{S}{V^{2 / 3}}

NFI

Non-fusiform index

NFI = \frac{\frac{S}{V^{2 / 3}}}{\frac{S_{fusiform}}{V_{fusiform}^{2 / 3}}} = \frac{IPR}{{IPR}_{fusiform}}