Motor Eloquent Navigated Transcranial Magnetic Stimulation for Radiosurgery Planning
Insel Gruppe AG, University Hospital Bern
30 participants
May 8, 2026
INTERVENTIONAL
Conditions
Summary
With this project, the study group wants to investigate whether a postoperative navigated transcranial magnetic stimulation (nTMS) motor map can improve stereotactic radiosurgery (SRS) planning in patients who underwent resection for a brain metastasis near the primary motor cortex. Specifically, the map could allow for more precise location of motor eloquent tissue, thereby minimizing the radiation dose on these areas while preserving high radiation dose on target tissue (i.e. tumor cells).
Eligibility
Inclusion Criteria5
- Informed consent
- Age ≥ 18 years
- Cerebral metastasis within or adjacent to the primary motor cortex (≤10 mm)
- Resection of tumor
- Eligible for and planned to undergo postresection radiosurgery at Inselspital Bern
Exclusion Criteria6
- Contraindication to TMS (e.g. Cochlear Implant, other metallic or electrical implants, excluding teeth and post craniotomy, Meniere's disease, pacemaker, deep brain stimulation electrodes, refractory convulsion, symptomatic tinnitus, depression diagnosed by a specialist, psychosis)
- Prior cerebral radiation therapy within the affected precentral gyrus/affecting the planned SRS plan
- Planned whole brain radiotherapy
- Second lesion within 2 cm ipsilateral in the primary motor cortex
- Infection or difficulties in wound healing within the last two weeks prior inclusion
- Pregnancy
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Interventions
Every patient will undergo a postoperative nTMS motor mapping, and both the "standard" and "nTMS-adapted" SRS plan will be created for every patient. The plan will be selected by the radiation oncologist, depending on whether at least 95% of the dose is administered to the target volume with the "nTMS-adapted" plan or not. Every patient then receives SRS.
Locations(1)
View Full Details on ClinicalTrials.gov
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NCT07415668