Pseudo current density maps of electrophysiological heart, nerve or brain function and their physical basis

Abstract

Abstract Background In recent years the visualization of biomagnetic measurement data by so-called pseudo current density maps or Hosaka-Cohen (HC) transformations became popular. Methods The physical basis of these intuitive maps is clarified by means of analytically solvable problems. Results Examples in magnetocardiography, magnetoencephalography and magnetoneurography demonstrate the usefulness of this method. Conclusion Hardware realizations of the HC-transformation and some similar transformations are discussed which could advantageously support cross-platform comparability of biomagnetic measurements.