Sixteen anatomically correct bodies have been studied to determine the performance of the inversion techniques of zero-order Tikhonov regularization and singular value decomposition. The bodies have varying heart height and diameter, thickness of subcutaneous fat layer, and distance of the heart from the left wall of the chest. Comparisons are made in terms of trade-off curves for noise amplification factor and spread of epicardial potentials. It was found that regularization performs better than singular value decomposition on all bodies; the larger the heart size, the more reliable the results; and for a given heart size, the thinner the subcutaneous fat layer, the more reliable the results. The distance of the heart from left wall of the chest was found to be a less significant factor for a given heart size.

Item Type:	Refereed Article
Research Division:	Mathematical Sciences
Research Group:	Applied Mathematics
Research Field:	Biological Mathematics
Objective Division:	Health
Objective Group:	Other Health
Objective Field:	Health not elsewhere classified
Author:	Johnston, PR (Dr Peter Johnston)
Author:	Kilpatrick, D (Professor David Kilpatrick)
ID Code:	4763
Year Published:	1995
Web of Science® Times Cited:	5
Deposited By:	Clinical Sciences
Deposited On:	1995-08-01
Last Modified:	2011-08-24
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