Numerical evaluation of RF-induced heating for various esophageal stent designs under MRI 1.5 Tesla system

ABSTRACT

This paper presents a numerical investigation of radio frequency (RF)-induced heating for various esophageal stent designs under magnetic resonance imaging (MRI). The length, patterns and insulation layer as well as the radius of the wire are comprehensively evaluated. It is shown that different stent designs can alter the induced current distributions on the stent and consequently its corresponding heating. Detailed discussions on these factors on RF heating are presented.

KEYWORDS:

• RF-induced heating
• Esophageal stent
• MRI
• Stent designs

Acknowledgments

I express my thanks to Dr. Jianfeng Zheng and Dr. Ji Chen for their advices on the stent design factors, calibration of the results and advices on the manuscript revision.

Declaration of interest

The authors report no conflicts of interest. The authors alone are responsible for the content and writing of this article.