The Zero-Potential Contour on a Homogeneous Conducting Cylinder
- 1 November 1953
- journal article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in Transactions of the IRE Professional Group on Medical Electronics
- Vol. PGME-1, 27-40
- https://doi.org/10.1109/iret-pgme.1953.5008474
Abstract
The zero-potential contour produced on the wall of a homogeneous conducting circular cylinder by a current dipole is investigated for both centric and eccentric dipoles located midway between the end-caps of the cylinder. Properties and characteristics of the zero-potential contour are discussed. The perpendicular-plane construction, employed in conjunction with the null-contour on the human subject to determine the orientation of a centric heart dipole, is clarified conceptually and the errors involved in this construction are determined quantitatively. It is shown that the heart dipole angle is obtainable from the perpendicular-plane construction if the latter result is multiplied by a correction factor of approximately 1.6, for dipoles tilted at angles from 0° to 45° with respect to the cylinder axis. The application of this result to electrocardiography is restricted by the assumptions that the human torso may be represented by a homogeneous conducting circular cylinder, and that the heart may be represented by a dipole located on the cylinder axis midway between the end-caps of the cylinder.Keywords
This publication has 2 references indexed in Scilit:
- A reference potential for unipolar electrocardiographic measurements on modelsAmerican Heart Journal, 1953
- The Relationship of Unipolar Chest Leads to the Electrical Field of the HeartCirculation, 1950