Abstract #0703

Ultra-short echo time sequence for electrode locations in simultaneous EEG-FMRI

Russell Butler¹, Guillaume Gilbert², and Kevin Whittingstall³

¹University of Sherbrooke, Sherbrooke, QC, Canada, ²MR Clinical Science - Philips Healthcare, Markham, ON, Canada, ³Diagnostic Radiology, University of Sherbrooke, Sherbrooke, QC, Canada

Precise and accurate knowledge of EEG sensors relative to underlying cortical tissue enhances simultaneous EEG-FMRI studies, but to date no specialized sequence for providing these locations exists. We propose an ultra-short echo time sequence (UTE) to highlight the plastic casing and wiring of a 64 channel MR compatible EEG cap. We show that the UTE resolves electrode components up to 6mm from the surface of the scalp, allowing to locate the precise contact point of electrode with skin and direction of wire leading away from the electrode in all subjects (n=8).

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.