Abstract #2849

Visualization of Brain Shift Corrected fMRI data for Intraoperative Brain Mapping

Sanam Maknojia¹, Fred Tam¹, Sunit Das^2,3, Tom Schweizer^2,4, and Simon Graham^1,5

¹Physical Sciences, Sunnybrook Research Institute, Toronto, ON, Canada, ²Keenan Research Centre, St. Michael's Hospital, Toronto, ON, Canada, ³Division of Neurosurgery, St. Michael's Hospital, Toronto, ON, Canada, ⁴Institute of Biomaterials & Biomedical Engineering, University of Toronto, Toronto, ON, Canada, ⁵Depart of Medical Biophysics, University of Toronto, Toronto, ON, Canada

Functional Magnetic Resonance Imaging (fMRI) facilitates the presurgical planning of awake craniotomies, but its use during the procedures remains limited. During intraoperative brain mapping by direct cortical electrical stimulation (DCS), fMRI is typically displayed separately or mentally recalled. The use of fMRI data in this manner is difficult and is further complicated by brain deformation or "shift". An image registration pipeline is presented that addresses this issue by providing covisualization of fMRI and DCS with acceptable accuracy for intraoperative use. This visualization method has the potential to improve the workflow of intraoperative brain mapping.

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