Forward and inverse problems of electrocardiography: modeling and recovery of epicardial potentials in humans
作者： A.V. Shahidi , P. Savard , R. Nadeau
DOI: 10.1109/10.284943
关键词:
摘要: To assess the accuracy of solutions to inverse problem electrocardiography in man, epicardial potentials computed from thoracic potential distributions were compared measured directly over surface heart during arrhythmia surgery. Three-dimensional finite element models thorax with different mesh resolutions and conductivity inhomogeneities constructed serial computerized tomography scans a patient. These torso used compute transfer matrices relating potentials. Potential ventricles 63 leads same patient whose anatomical data was construct models. solve problem, methods based on Tykhonov regularization or regularization-truncation applied. The recovered closely resembled early ventricular preexcitation, but not more complex later QRS complex. Several problems encountered as validation process is applied man are also discussed. >
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