Sensitivity distribution of a bipolar (symmetric) measurement within the region of the spherical heart model. The figure also illustrates the anterior magnetometer. This measurement situation corresponds to the measurement of the x component of the MHV with the symmetric XYZ lead system or with the symmetric unipositional lead system with measurements on both sides of the thorax.
(A) Sensitivity distribution. The region of the heart is shaded. The magnetometer distance h
and radial distance r
are not shown to the same scale.