NDLI: Non-invasive imaging of epicardial electrograms during controlled myocardial ischemia

Content Provider	IEEE Xplore Digital Library
Author	Penney, C.J. Clements, J.C. Horacek, B.M.
Copyright Year	2000
Description	Author affiliation: Dept. of Physiol. & Biophys., Dalhousie Univ., Halifax, NS, Canada (Penney, C.J.)
Abstract	Electrocardiographic potentials measured on the body surface may be used to estimate electric potentials on the epicardial surface. The objective of this study was to refine this estimation so as to recreate temporal epicardial electrograms from body surface mapping data recorded during controlled myocardial ischemia. A boundary-element inverse solution was refined by implementing the Composite Regional Constraint. Complex multiple-dipole sources verified the advantages of using this technique. Epicardial electrograms were reconstructed from body surface maps recorded in 18 patients with single vessel coronary artery disease who were undergoing percutaneous transluminal coronary angioplasty (LAD=7;RCA=9,Cx=2). Localized electrogram changes between maps recorded at rest and during balloon inflation identified the occluded artery, with the amount of change increasing as the inflation progressed.
Starting Page	103
Ending Page	106
File Size	385603
Page Count	4
File Format	PDF
ISBN	0780365577
ISSN	02766547
DOI	10.1109/CIC.2000.898466
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-09-24
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Myocardium Ischemic pain Electric potential Bioelectric phenomena Arteries Electrocardiography Inverse problems Integral equations Surface reconstruction Coronary arteriosclerosis
Content Type	Text
Resource Type	Article

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