Title :
Simultaneous use of multiple MCG sensor arrays-a study on the localization accuracy
Author :
Tilg, B. ; Wach, P. ; Lafer, G. ; Nenonen, J. ; Katila, T.
Author_Institution :
Dept. of Biophys., Graz Univ. of Technol., Austria
fDate :
31 Oct-3 Nov 1996
Abstract :
The reconstruction of the transmembrane potential distribution on the heart´s surface using one or two magnetometer arrays on the anterior and posterior side of the thorax simultaneously considering an inhomogeneous boundary element thorax model is presented. The objective is to make an assessment on the localization accuracy. A minimum-norm algorithm is applied for the estimation of the transmembrane potential at the nodes of the epicardial and endocardial boundary element mesh. Results achieved are compared to those obtained by the application of a weighting matrix to remove depth bias
Keywords :
arrays; bioelectric potentials; biomembranes; inverse problems; magnetocardiography; medical signal processing; physiological models; depth bias; endocardial boundary element mesh; epicardial boundary element mesh; inhomogeneous boundary element thorax model; localization accuracy; minimum-norm algorithm; multiple MCG sensor arrays; transmembrane potential distribution reconstruction; weighting matrix; Biomedical engineering; Computed tomography; Heart; Humans; Integral equations; Magnetic fields; Magnetic resonance imaging; Sensor arrays; Surface reconstruction; Thorax;
Conference_Titel :
Engineering in Medicine and Biology Society, 1996. Bridging Disciplines for Biomedicine. Proceedings of the 18th Annual International Conference of the IEEE
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-3811-1
DOI :
10.1109/IEMBS.1996.647497
