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Related Experiment Video

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Preoperative functional mapping for rolandic brain tumor surgery.

Vincenzo Rizzo1, Carmen Terranova1, Alfredo Conti1

  • 1Department of Neurosciences, University of Messina, Italy.

Neuroscience Letters
|September 17, 2014
PubMed
Summary

Navigated transcranial magnetic stimulation (nTMS) precisely mapped the motor cortex in brain tumor patients. This technology significantly influenced surgical planning and strategy, reducing post-operative motor deficits.

Keywords:
Brain tumorConnectivityFunctional mappingMotor cortexNavigated transcranial magnetic stimulation

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Area of Science:

  • Neurosurgery
  • Neurology
  • Medical Imaging

Background:

  • Resection of tumors near eloquent motor areas requires balancing maximal tumor removal with preserving neurological function.
  • Preoperative mapping of the motor cortex is crucial for surgical planning in these cases.

Purpose of the Study:

  • To evaluate the utility of navigated transcranial magnetic stimulation (nTMS) for preoperative motor cortex mapping in patients with tumors near the precentral gyrus.
  • To assess the impact of nTMS on surgical planning and patient outcomes.

Main Methods:

  • Pre-surgical motor cortex mapping using nTMS was performed in 17 consecutive patients with lesions in or near the precentral gyrus.
  • Data on nTMS accuracy, influence on surgical planning, and impact on surgical strategy were collected.

Main Results:

  • nTMS successfully localized the motor cortex in 88.2% of patients.
  • Unexpected functional information influencing pre-operative planning was obtained in 70.6% of cases.
  • Surgical strategy was altered in 29.4% of cases due to nTMS findings to prevent motor cortex damage.

Conclusions:

  • nTMS provides significant benefits for treating rolandic brain tumors by offering crucial spatial information between the motor cortex and the tumor.
  • This technology reduces surgical-related post-operative motor deficits and improves patient care.