Adaptive mesh refinement techniques for 3-D skin electrode modeling.
In this paper, we develop a 3-D adaptive mesh refinement technique. The algorithm is constructed with an electric impedance tomography forward problem and the finite-element method in mind, but is applicable to a much wider class of problems. We use the method to evaluate the distribution of currents injected into a model of a human body through skin contact electrodes. We demonstrate that the technique leads to a significantly improved solution, particularly near the electrodes. We discuss error estimation, efficiency, and quality of the refinement algorithm and methods that allow for preserving mesh attributes in the refinement process.
Schulich School of Engineering, University of Calgary, Calgary, AB, Canada. sawickib@gmail.com
Bartosz
B
Sawicki
Michal
M
Okoniewski
D000465:Algorithms; D003198:Computer Simulation; D017097:Electric Impedance; D004566:Electrodes; D005712:Galvanic Skin Response; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000295:instrumentation / Q000379:methods*; D012815:Signal Processing, Computer-Assisted; D014054:Tomography / Q000295:instrumentation / Q000379:methods*