Abstract #0914

Simulation and Experimental Measurements of Flow Effects on Radio Frequency Induced Heating of a Stent

David C. Gross^1,2, Benjamin Scandling¹, and Orlando P. Simonetti^3,4

¹Biomedical Engineering, The Ohio State University, Columbus, OH, United States, ²Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University Wexner Medical Center, Columbus, OH, United States, ³Radiology, The Ohio State University Wexner Medical Center, Columbus, OH, United States, ⁴Internal Medicine, Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus, OH, United States

The goal of this study was to investigate the influence of blood flow on the temperature rise of a peripheral vascular stent during MRI with flow phantom experiments and computer simulations. RF heating experiments of a vascular stent are performed during MRI at 3.0T in a flow phantom. The temperature rise of the stent is measured with varied flow rates. The temperature rise of the stent was over 10°C without flow, and was reduced by 50% with a flow rate of only 50 mL/min. Blood flow significantly reduces the temperature rise of stents and the surrounding tissue during RF heating.

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