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Published on: August 12, 2019
Task-free presurgical mapping using functional magnetic resonance imaging intrinsic activity.
Hesheng Liu1, Randy L Buckner, Tanveer Talukdar
1Massachusetts General Hospital/Massachusetts Institute of Technology/Harvard Medical School Athinoula A. Martinos Center for Biomedical Imaging, Charlestown, Massachusetts 02129, USA.
Journal of Neurosurgery
|April 14, 2009
Summary
This study demonstrates that resting-state functional magnetic resonance imaging (fMRI) can effectively map brain motor function for presurgical planning. This task-free approach accurately identifies motor regions, aiding neurosurgical interventions.
Area of Science:
- Neuroimaging
- Functional Magnetic Resonance Imaging (fMRI)
- Neuroscience
Background:
- Low-frequency signals in spontaneous fMRI reveal intrinsic brain organization.
- Task-free fMRI mapping is a potential tool for presurgical planning.
Purpose of the Study:
- To assess the feasibility of presurgical motor function mapping using a task-free fMRI paradigm.
- To explore intrinsic activity correlations for identifying motor networks.
Main Methods:
- Six patients with brain tumors or epilepsy near the motor cortex participated.
- Compared task-elicited motor activation with intrinsic activity correlations.
- Identified motor networks in the affected hemisphere and visualized anatomical distortions.
Main Results:
- Motor regions identified via spontaneous activity correlations closely matched those from movement tasks and direct cortical stimulation.
- Task-free fMRI successfully mapped the motor cortex in presurgical patients.
Conclusions:
- A task-free fMRI paradigm offers a powerful method for mapping functional brain anatomy.
- This approach is beneficial for patients with limited task compliance and enables multi-system mapping in one session.
