Lv. Tsap et al., A method for increasing precision and reliability of elasticity analysis in complicated burn scar cases, INT J PATT, 14(2), 2000, pp. 189-210
Citations number
32
Categorie Soggetti
AI Robotics and Automatic Control
Journal title
INTERNATIONAL JOURNAL OF PATTERN RECOGNITION AND ARTIFICIAL INTELLIGENCE
In this paper we propose a method for increasing precision and reliability
of elasticity analysis in complicated burn scar cases. The need for a techn
ique that would help physicians by objectively assessing elastic properties
of scars, motivated our original algorithm. This algorithm successfully em
ployed active contours for tracking and finite element models for strain an
alysis. However, the previous approach considered only one normal area and
one abnormal area within the region of interest, and scar shapes which were
somewhat simplified. Most burn scars have rather complicated shapes and ma
y include multiple regions with different elastic properties. Hence, we nee
d a method capable of adequately addressing these characteristics. The new
method can split the region into more than two localities with different ma
terial properties, select and quantify abnormal areas, and apply different
forces if it is necessary for a better shape description of the scar.
The method also demonstrates the application of scale and mesh refinement t
echniques in this important domain. It is accomplished by increasing the nu
mber of Finite Element Method (FEM) areas as well as the number of elements
within the area. The method is successfully applied to elastic materials a
nd real burn scar cases. We demonstrate all of the proposed techniques and
investigate the behavior of elasticity function in a 3-D space. Recovered p
roperties of elastic materials are compared with those obtained by a conven
tional mechanics-based approach. Scar ratings achieved with the method are
correlated against the judgments of physicians.