Discover how the integration of structured-light 3D scans enhances the accuracy of neuronavigated Transcranial Magnetic Stimulation (TMS), revolutionizing precision in brain stimulation therapies.
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Verification of neuronavigated TMS accuracy using structured-light 3D scans.
Matilainen et al., Phys Med Biol 2024
<!– DOI: 10.1088/1361-6560/ad33b8 //–>
https://doi.org/10.1088/1361-6560/ad33b8
The study explores the precision and accuracy of manual three-point co-registration in neuronavigated transcranial magnetic stimulation (TMS), focusing on how errors in landmark identification affect coil placement and the resultant electric and magnetic fields. Through comparing neuronavigation system data with 3D scanning for ten participants, findings revealed an average discrepancy of 10.2 mm in coil locations, with orientation errors between two to three degrees. This misalignment led to a significant average error in the electric field (29%, range 9%-51%) and in the magnetic field (33%, range 10%-58%). Additionally, inaccuracies in landmark pointing could amplify coil location errors by up to 1.8 times.
Importance: This research underscores the potential for significant errors in coil positioning during TMS when relying on three-point neuronavigation, which could compromise the accuracy of electric field calculations critical for research. The study suggests incorporating 3D scanning as a viable solution to enhance coil placement accuracy.