In stents, RF-induced heating is mainly associated with the antenna effect that occurs due to the thin and elongated geometry. Heating occurs mainly at the stent tip where a dipole-like E-field pattern is present. However, the E-field pattern and thus the locations of maximum heating change when two stents overlap. Using an optical setup for high-resolution E-field mapping, we provide further insight in the RF excitation of various combinations of stents in different geometric and dielectric configurations.
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