Title :
A floating sleeve antenna yields localized hepatic microwave ablation
Author :
Yang, Deshan ; Bertram, John M. ; Converse, Mark C. ; O´Rourke, Ann P. ; Webster, John G. ; Hagness, Susan C. ; Will, James A. ; Mahvi, David M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Wisconsin, Madison, WI, USA
fDate :
3/1/2006 12:00:00 AM
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.
Keywords :
microwave antennas; microwave heating; patient treatment; tumours; 2.4 GHz; coaxial dipole antenna; floating sleeve antenna; localized hepatic microwave ablation; metal conductor; Antenna feeds; Biomedical engineering; Coaxial components; Conductors; Dipole antennas; Electromagnetic heating; Microwave antennas; Microwave devices; Neoplasms; Slot antennas; Ablation; coaxial aperture antennas; finite element methods; floating sleeve; microwave heating; Animals; Catheter Ablation; Cattle; Computer-Aided Design; Equipment Design; Equipment Failure Analysis; Hepatectomy; Liver; Microwaves;
Journal_Title :
Biomedical Engineering, IEEE Transactions on
DOI :
10.1109/TBME.2005.869794
