Meeting Banner
Abstract #3721

Application of passive intraoperative motor fMRI at 3T for the delineation of the sensorimotor cortex

Gilbert Hangel1,2, Jonathan Wais3, Matthias Tomschik3, Florian Fischmeister4, Christian Dorfer3, Gregor Kasprian4, and Karl Rössler3
1High-field MR Center, Department of Biomedical Imaging and Image-guided Therapy & Department of Neurosurgery, Medical University of Vienna, Vienna, Austria, 2Functional Imaging Laboratory, Department of Imaging Neuroscience, UCL Queen Square Institute of Neurology, University College London, London, United Kingdom, 3Department of Neurosurgery, Medical University of Vienna, Vienna, Austria, 4Division of Neuroradiology and Musculoskeletal Radiology, Department of Biomedical Imaging and Image-guided Therapy, Medical University of Vienna, Vienna, Austria

Synopsis

Keywords: Task/Intervention Based fMRI, fMRI Acquisition

Motivation: 3T intraoperative MRI systems have increased sensitivity compared to 1.5T which can be utilised to adapt functional MRI for use in neuronavigation. Specifically, passive intraoperative motor fMRI (pifMRI) can define the sensorimotor cortex (SMC).

Goal(s): To investigate the utility of pifMRI for the delineation of the SMC and for DTI-based fibre tracking under general anaesthesia.

Approach: We applied pifMRI pre- and post-resection to a cohort of patients with planned supratentorial craniotomy and evaluated neurosurgical utility.

Results: In all eight included patients, we could map the SMC and successfully use it to seed fibre tracking.

Impact: 3T intraoperative passive motor fMRI under general anaesthesia is feasible with the potential of patient-individualised on-site brain-mapping of the sensorimotor cortices for improved neuronavigation for better functional outcomes and treatment monitoring.

How to access this content:

For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.

After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.

After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.

Click here for more information on becoming a member.

Keywords