A floating sleeve antenna yields localized hepatic microwave ablation

Deshan Yang, John M. Bertram, Mark C. Converse, Ann P. O'Rourke, John G. Webster*, Susan C. Hagness, James A. Will, David M. Mahvi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

148 Scopus citations

Abstract

We report a novel coaxial antenna for hepatic microwave ablation. This device uses a floating sleeve, that is, a metal conductor electrically isolated from the outer connector of the antenna coaxial body, to achieve a highly localized specific absorption rate pattern that is independent of insertion depth. This floating sleeve coaxial dipole antenna has low power reflection in the 2.4-GHz IMS band. Ex vivo experiments confirm our numerical simulation results.

Original languageEnglish (US)
Article number1597504
Pages (from-to)533-537
Number of pages5
JournalIEEE Transactions on Biomedical Engineering
Volume53
Issue number3
DOIs
StatePublished - Mar 2006

Funding

Manuscript received January 8, 2005; revised June 28, 2005. This work was supported by the National Institute of Health (NIH) under Grant DK58839. Asterisk indicates corresponding author. D. Yang and S. C. Hagness are with the Department of Electrical and Computer Engineering, University of Wisconsin, Madison, WI 53706 USA. J. M. Bertram is with the Department of Biomedical Engineering, University of Wisconsin, Madison, WI 53706 USA. M. C. Converse, A. P. O’Rourke, and D. M. Mahvi are with the Department of Surgery, University of Wisconsin, Madison, WI 53792 USA. *J. G. Webster is with the Department of Biomedical Engineering, University of Wisconsin, 1550 Engineering Drive, Madison, WI 53706 USA (e-mail: [email protected]). J. A. Will is with the Department of Animal Health and Biomedical Sciences, University of Wisconsin, Madison, WI 53706 USA. Digital Object Identifier 10.1109/TBME.2005.869794

Keywords

  • Ablation
  • Coaxial aperture antennas
  • Finite element methods
  • Floating sleeve
  • Microwave heating

ASJC Scopus subject areas

  • Biomedical Engineering

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