Abstract #0596

Vertical MRI systems may offer a safer platform with substantially reduced RF heating in adult and pediatric patients with CIEDs

Jasmine Vu^1,2, Fuchang Jiang¹, Bhumi Bhusal², Pia Sanpitak², Gregory Webster³, Giorgio Bonmassar⁴, and Laleh Golestanirad^1,2

¹Biomedical Engineering, Northwestern University, Evanston, IL, United States, ²Radiology, Northwestern University, Chicago, IL, United States, ³Cardiology, Ann and Robert H. Lurie Children's Hospital of Chicago, Northwestern University Feinberg School of Medicine, Chicago, IL, United States, ⁴Athinoula A. Martinos Center for Biomedical Engineering, Charlestown, MA, United States

Synopsis

Keywords: Safety, Cardiovascular, ImplantsMRI is restricted for patients with cardiac implantable electronic devices (CIEDs)—especially children with epicardial systems—due to potential radiofrequency (RF) heating of the tissue around the lead. Here, we present the first assessment of RF heating of epicardial and endocardial CIEDs with varying lead lengths in a vertical MRI system, where we found up to a 78-fold reduction in the simulated maximum specific absorption rate (SAR) compared to a horizontal coil. Reduction in the maximum 0.1g-averaged SAR in the vertical coil was consistent for leads with various internal wire geometries and electrical lengths.

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.