Abstract
BACKGROUND: Field calculations for transcranial magnetic stimulation (TMS) are increasingly implemented online in neuronavigation systems and in more realistic offline approaches based on finite-element methods. They are often based on simplified and/or non-validated models of the magnetic vector potential of the TMS coils.
OBJECTIVE: To develop an approach to reconstruct the magnetic vector potential based on automated measurements.
METHODS: We implemented a setup that simultaneously measures the three components of the magnetic field with high spatial resolution. This is complemented by a novel approach to determine the magnetic vector potential via volume integration of the measured field.
RESULTS: The integration approach reproduces the vector potential with very good accuracy. The vector potential distribution of a standard figure-of-eight shaped coil determined with our setup corresponds well with that calculated using a model reconstructed from x-ray images.
CONCLUSION: The setup can supply validated models for existing and newly appearing TMS coils.
| Original language | English |
|---|---|
| Journal | Brain Stimulation |
| Volume | 8 |
| Issue number | 6 |
| Pages (from-to) | 1205-8 |
| Number of pages | 4 |
| ISSN | 1935-861X |
| DOIs | |
| Publication status | Published - Nov 2015 |