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Related Experiment Video

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Functional Near Infrared Spectroscopy of the Sensory and Motor Brain Regions with Simultaneous Kinematic and EMG Monitoring During Motor Tasks
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Presurgical Assessment of the Sensorimotor Cortex Using Resting-State fMRI.

F C Schneider1, M Pailler2, I Faillenot3

  • 1From the Departments of Radiology (F.C.S., M.P., F.-G.B., C.B.) Thrombosis Research Group EA 3065 (F.C.S., F.-G.B., C.B.) fabien.schneider@univ-st-etienne.fr.

AJNR. American Journal of Neuroradiology
|September 19, 2015
PubMed
Summary

Resting-state functional MRI (fMRI) reliably identifies motor cortex function for presurgical planning. This method offers a promising alternative to task-based fMRI, benefiting patients with disabilities.

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Area of Science:

  • Neuroimaging
  • Clinical Neuroscience

Background:

  • Presurgical evaluation of brain lesions requires accurate motor cortex functional characterization.
  • Task-based functional MRI (fMRI) identifies motor areas but has limitations in clinical settings, including long scan times and patient exclusion.
  • Resting-state fMRI offers a non-invasive alternative, avoiding task-related difficulties.

Purpose of the Study:

  • To evaluate the efficacy of resting-state fMRI in localizing sensorimotor function for presurgical planning.
  • To compare resting-state fMRI with task-based fMRI for motor cortex identification.

Main Methods:

  • Nineteen patients with brain pathologies underwent both task-based and resting-state fMRI.
  • Independent component analysis was used to identify functional brain networks.
  • Three radiologists localized motor cortex representations (hand, foot, face) and compared results with task-based fMRI.

Main Results:

  • Resting-state fMRI successfully and consistently identified the motor cortex in all patients.
  • Sensitivities for subdividing the motor cortex were comparable between resting-state and task-based fMRI.
  • Good spatial correspondence was observed between resting-state fMRI components and task-based fMRI activations.

Conclusions:

  • Resting-state fMRI is a reliable method for imaging sensorimotor function in clinical preoperative routines.
  • It presents a promising approach for presurgical localization of sensorimotor function.
  • This technique has the potential to benefit a wide range of patients with diverse pathologies.