Abstract #1750

Suppression of RF Heating Due to Intravascular Devices using Non-Resonant In-Line Coaxial Choke Baluns

Krishna N. Kurpad¹, Madhav Venkateswaran², Orhan Unal^1,3

¹Radiology, University of Wisconsin, Madison, WI, United States; ²Electrical & Computer Engineering, University of Wisconsin, Madison, WI, United States; ³Medical Physics, University of Wisconsin, Madison, WI, United States

This abstract addresses the problem of RF heating in interventional devices. There is some degree of skepticism of the effectiveness of coaxial chokes as it is hypothesized that self-resonant chokes will only shift the problem of RF heating to the choke itself. In this work, which is an extension of earlier work on coaxial choke baluns, we demonstrate the effectiveness of the non-resonant coaxial choke in suppressing RF heating not only at the microcoil but also in the vicinity of the choke.