Share Email Print
cover

Proceedings Paper

Improved Wiener reconstruction of bioelectric current distribution based on its estimated correlation matrix
Author(s): Hideaki Haneishi; Hajime Nobuhara; Norimichi Tsumura; Yoichi Miyake
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

This paper proposes a new Wiener estimation method for reconstructing current distribution from biomagnetic measurement. The present method is an improved version of the method proposed by Sekihara et al., which is based on estimating the source-current correlation matrix from the measured-data correlation matrix. In our method, the regularization term used in pseudo inversion of the lead field matrix is modified so as to reduce the artifact due to noise more efficiently. The parameters in the modified regularization term are determined, not empirically, but optimally based on the measured data. Computer simulation demonstrates the effectiveness of the proposed method.

Paper Details

Date Published: 9 December 1997
PDF: 8 pages
Proc. SPIE 3171, Computational, Experimental, and Numerical Methods for Solving Ill-Posed Inverse Imaging Problems: Medical and Nonmedical Applications, (9 December 1997); doi: 10.1117/12.284716
Show Author Affiliations
Hideaki Haneishi, Chiba Univ. (Japan)
Hajime Nobuhara, Chiba Univ. (Japan)
Norimichi Tsumura, Chiba Univ. (Japan)
Yoichi Miyake, Chiba Univ. (Japan)


Published in SPIE Proceedings Vol. 3171:
Computational, Experimental, and Numerical Methods for Solving Ill-Posed Inverse Imaging Problems: Medical and Nonmedical Applications
Randall Locke Barbour; Mark J. Carvlin; Michael A. Fiddy, Editor(s)

© SPIE. Terms of Use
Back to Top