Orthogonal Field Calibration Analysis for Myocardial Electrode Arrays Used in Defibrillation Studies

Mapping the myocardial electric field during a defibrillation pulse requires the recording of potential differences between electrodes. The field is then calculated from these quantities and the corresponding calibration matrix. One straightforward calibration technique involves alignment of a known...

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Bibliographic Details
Published in:IEEE transactions on biomedical engineering 2008-12, Vol.55 (12), p.2823-2826
Main Authors: Deale, O. Carlton, Ng, Kwong T., Lerman, Bruce B.
Format: Article
Language:English
Subjects:
Calibration
Calibration - standards
Cardiology
Current density
Defibrillation
Electric Conductivity - therapeutic use
Electric Countershock - methods
Electric Countershock - standards
Electric variables measurement
electrode array (EA)
Electrodes
Electromagnetic Fields
Electrophysiologic Techniques, Cardiac - methods
Electrophysiologic Techniques, Cardiac - standards
Error analysis
field mapping
Heart
Heart - physiopathology
Humans
Myocardium
potential gradient
Reference Values
Research Design
Steel
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Description
Summary:Mapping the myocardial electric field during a defibrillation pulse requires the recording of potential differences between electrodes. The field is then calculated from these quantities and the corresponding calibration matrix. One straightforward calibration technique involves alignment of a known electric field along each of the orthogonal axes of an electrode array and recording the resulting potential differences. However, no results have been reported to support the efficacy of this technique. This study performs a detailed error analysis including a one-to-one comparison to a precision calibration technique, and quantitatively establishes the efficacy of the orthogonal field technique.
ISSN:0018-9294
1558-2531
DOI:10.1109/TBME.2008.2003089