Understanding Pseudo Current Density Maps in Electrophysiology
Author Information
Author(s): Wolfgang Haberkorn, Uwe Steinhoff, Martin Burghoff, Olaf Kosch, Andreas Morguet, Hans Koch
Primary Institution: Physikalisch-Technische Bundesanstalt, Berlin, Germany
Hypothesis
What do pseudo current density maps really show?
Conclusion
Pseudo current density maps can provide a visualization of electrophysiological measurements, but they are only 2D representations of a 3D current distribution and may deviate significantly from the actual current distribution.
Supporting Evidence
- PCD-maps allow for intuitive understanding of underlying currents in electrophysiological measurements.
- Recent advances in computing power and visualization tools have spurred interest in the HC-transformation method.
- PCD-maps can be computed from various sensor configurations, allowing for cross-platform comparability.
Takeaway
This study shows how special maps can help doctors see how electricity moves in the heart and brain, but they don't show the full picture.
Methodology
The study used analytically solvable problems to clarify the physical basis of pseudo current density maps and demonstrated their usefulness in various applications like magnetocardiography and magnetoencephalography.
Limitations
The PCD-maps are only 2D projections of a 3D reality and may deviate considerably from the real current distribution.
Digital Object Identifier (DOI)
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