Abstract #0180

Design and Construction of Resistive Tapered Cylindrical Leads to Reduce RF-Induced Heating During MRI

Tayeb Zaidi¹, Giorgio Bonmassar^2,3, Francesca Marturano^2,3, Pia Sanpitak¹, Bhumi Bhusal¹, and Laleh Golestanirad^1,4

¹Biomedical Engineering, Northwestern University, Evanston, IL, United States, ²Martinos Center for Biomedical Imaging, Massachusetts General Hospital, Charlestown, MA, United States, ³Harvard Medical School, Boston, MA, United States, ⁴Feinberg School of Medicine, Northwestern University, Chicago, IL, United States

Synopsis

Keywords: Safety, Safety

Motivation: RF-induced heating at the tips of conductive leads in active implantable medical devices (AIMDs) during MRI poses safety risks and limits patient MRI access.

Goal(s): Our goal is to develop a novel lead design that reduces RF-induced heating during MRI, enhancing safety for patients with AIMDs.

Approach: We designed a resistive tapered cylindrical (RTC) lead with variable conductivity along its length, constructed prototypes, and conducted experimental testing comparing temperature rise with a uniform-conductivity control wire.

Results: Experimental results showed a significant reduction in temperature rise at RTC lead tips compared to control wires, suggesting RTC leads can improve MRI safety for AIMD patients.

Impact: The RTC lead design significantly reduces RF-induced heating during MRI, offering a practical solution to enhance MRI safety for patients with AIMDs and potentially expanding safe MRI access.

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