Title :
Estimating fiber directions from local activation mapping: a model study
Author :
Muzikant, Adam L. ; Weitzel, Erik K. ; Henriquez, Craig S.
Author_Institution :
Dept. of Biomed. Eng., Duke Univ., Durham, NC, USA
Abstract :
A computer model of activation with mapping was used to reconstruct local fiber directions in tissue with a nonuniform fiber field. Local activations from a point stimulus were recorded by surrounding electrodes in a small electrode plaque in the tissue domain. Through interpolation of the elliptically-shaped isochrones, fiber angles were determined for tissue under the electrode plaque. By estimation of fiber direction with activation mapping, local tissue properties can be evaluated and included in propagation models in an attempt to validate their results
Keywords :
biocontrol; bioelectric potentials; biology computing; biomembrane transport; cardiology; physiological models; computer model; elliptically-shaped isochrones; epicardial surface; fiber angles; fiber directions; interpolation; local activation mapping; local fiber directions; local tissue properties; nonuniform fiber field; paced activation; point stimulus; propagation models; small electrode plaque; tissue; transmembrane potential; Biomedical computing; Biomedical electrodes; Biomedical engineering; Cardiac tissue; Conductivity; Interpolation; Myocardium; Optical fiber testing; Tensile stress; USA Councils;
Conference_Titel :
Engineering in Medicine and Biology Society, 1995., IEEE 17th Annual Conference
Conference_Location :
Montreal, Que.
Print_ISBN :
0-7803-2475-7
DOI :
10.1109/IEMBS.1995.575010
