FV 3. Higher concordance of navigated transcranial magnetic stimulation (nTMS) than of functional MRI with intraoperative direct cortical stimulation (DCS) for delineating the primary motor area

To optimize the outcome after brain tumour surgery not only with regard to completeness of resection but also to postoperative motor functions and, thus, quality of life, individual assessment of the surgery-related functional risk is mandatory. Therefore, navigated transcranial magnetic stimulation (nTMS) has been used more and more as a reasonable alternative to functional magnetic resonance imaging (fMRI) over the last years. We compared the congruency of nTMS vs. fMRI results for non-invasively mapping the primary motor cortex (M1) prior to surgery with the gold standard method of direct cortical simulation (DCS).

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