Pseudo current density maps of electrophysiological heart, nerve or brain function and their physical basis
1 Physikalisch-Technische Bundesanstalt, Berlin, Germany
2 Charité Campus Benjamin Franklin, Clinic II, Berlin, Germany
BioMagnetic Research and Technology 2006, 4:5 doi:10.1186/1477-044X-4-5Published: 13 October 2006
In recent years the visualization of biomagnetic measurement data by so-called pseudo current density maps or Hosaka-Cohen (HC) transformations became popular.
The physical basis of these intuitive maps is clarified by means of analytically solvable problems.
Examples in magnetocardiography, magnetoencephalography and magnetoneurography demonstrate the usefulness of this method.
Hardware realizations of the HC-transformation and some similar transformations are discussed which could advantageously support cross-platform comparability of biomagnetic measurements.