Title :
Lp-normalized minimum-L1-norm solution of the biomagnetic inverse problem
Author :
Matsuura, Kanta ; Okabe, Yoichi
Author_Institution :
Res. Center for Adv. Sci. & Technol., Tokyo Univ., Japan
fDate :
31 Oct-3 Nov 1996
Abstract :
Depending on reconstruction models, estimation of biomagnetic sources may require compensation for sensoring bias. For a minimum-L1-norm approach such as selective minimum-norm (SMN) method, Lp-normalization of the lead-field vectors is a theoretically suitable compensation technique. This theory and an experimental evaluation are presented by using a three-dimensional sphere model. The evaluation gives a moderate range of the normalization parameter p which prevents location errors from exceeding the grid interval of the model. L2-normalization is in the middle of this range
Keywords :
biomagnetism; inverse problems; physiological models; Lp-normalized minimum-L1-norm solution; biomagnetic inverse problem; biomagnetic sources; compensation; grid interval; lead-field vectors; location errors; normalization parameter; reconstruction models; selective minimum-norm method; sensoring bias; three-dimensional sphere model; Biomagnetics; Electrodes; Engineering in Medicine and Biology Society; Estimation error; Inverse problems; Position measurement; Predictive models;
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.1996.646521
