Publications [#61059] of Roger C. Barr

Papers Published

1. Barr, Roger C. and Ramsey, Maynard III and Spach, Madison S., RELATING EPICARDIAL TO BODY SURFACE POTENTIAL DISTRIBUTIONS BY MEANS OF TRANSFER COEFFICIENTS BASED ON GEOMETRY MEASUREMENTS., IEEE Transactions on Biomedical Engineering, vol. BME-24 no. 1 (1977), pp. 1 - 11
   (last updated on 2007/04/12)

   Abstract:
   The method is based on knowing the geometric location of each electrode, and on having enough electrodes to establish the geometric shape and the potential distribution of closed epicardial and body surfaces. However, the method does not require that either the heart or body surfaces have any special shape, such as that of a sphere, or that any electrical quantities, such as voltage gradients, be known in addition to the potentials. The use of potential distributions to represent heart electrical activity is advantageous since such distributions can be directly measured experimentally, without a transformation to any other form, such as multiple current-generating dipoles, being required. This report includes a statement of the underlying integral equations, the procedure for finding the equations' coefficients from geometry measurements, some considerations for computer algorithms, and an example. The mathematical method also can be used for situations other than relating the epicardial to the body surface, such as considering the potential distributions around small cardiac structures.

   Keywords:
   MATHEMATICAL TECHNIQUES;