Abstract #2644

Numerical Simulation of Specific Absorption Rate (SAR) Induced in the Head as a Function of EEG Lead Conductivity during 256-channel dEEG/fMRI at 3T.

Seyed Reza Atefi^1,2, Peter Serano³, Catherine Poulsen⁴, and Giorgio Bonmassar^1,2

¹Harvard Medical School, Boston, MA, United States, ²Massachusetts General Hospital, Boston, MA, United States, ³Mechanical Engineering, University of Maryland, MD, United States, ⁴Electrical Geodesics Inc., OR, United States

This study presents the numerical quantification of the relationship between the EEG lead conductivity and SAR induced in the head in EEG-fMRI at 3T and using a 256-channel dense array sensor net. SAR induced in the head normalized by the gold standard of no sensor net was an S-curve function of the EEG lead conductivity in the range 1S/m - 5.8^.10⁷ S/m, plateauing at 1 for lead conductivities below 10 S/m.

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.