用于逆心电图的高阶正则化技术。
Higher order regularization techniques for inverse electrocardiography.
作者信息
Throne R D, Olson L G
机构信息
Dept. of Electrical Engineering, University of Nebraska, USA.
出版信息
Biomed Sci Instrum. 1997;34:257-62.
We have previously presented the generalized eigensystem (GES) approach as an alternative to truncated singular value decomposition and zero order Tikhonov regularization methods for the ill-conditioned inverse problem of electrocardiography. In this paper we extend our comparison of GES with Tikhonov regularization utilizing higher order regularizers applied to a realistic heart/torso geometry with measured epicardial and body surface potentials. Utilizing higher order regularizers the results from Tikhonov regularization more closely match those of the GES techniques.
我们之前已经提出广义特征系统（GES）方法，作为截断奇异值分解和零阶蒂霍诺夫正则化方法的替代方法，用于解决心电图的病态逆问题。在本文中，我们将GES与蒂霍诺夫正则化的比较进行了扩展，利用应用于具有实测心外膜和体表电位的真实心脏/躯干几何模型的高阶正则化器。利用高阶正则化器，蒂霍诺夫正则化的结果与GES技术的结果更紧密地匹配。
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