Monopole antennas for microwave catheter ablation

Journal Article · Tue Oct 01 00:00:00 EDT 1996 · IEEE Transactions on Microwave Theory and Techniques

DOI:https://doi.org/10.1109/22.539941· OSTI ID:398140

Labonte, S; Blais, A; Legault, S R; Ali, H O; Roy, L ^[1]

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1. Univ. of Ottawa, Ontario (Canada). Dept. of Electrical Engineering

The authors study the characteristics of various monopole antennas for microwave catheter ablation of the endocardium. The investigation is done with a computer model based on the finite-element method in the frequency domain. Three monopole geometries are considered: open-tip, dielectric-tip, and metal-tip. Calculations are made for the magnetic field, the reflection coefficient and the power deposition pattern of the antennas immersed in normal saline. The theoretical results are compared with measurements performed on prototypes and good agreement is obtained. The antenna characteristics suggest that the metal-tip monopole best fulfills the requirements of catheter ablation. The computer model is then used to compare metal-tip monopoles of different dimensions and to determine design trade-offs.

• OSTI ID: 398140
• Journal Information: IEEE Transactions on Microwave Theory and Techniques, Vol. 44, Issue 10Pt2; Other Information: PBD: Oct 1996
• Country of Publication: United States
• Language: English

Related Subjects

56 BIOLOGY AND MEDICINE
APPLIED STUDIES
MICROWAVE RADIATION
BIOLOGICAL EFFECTS
CARDIOVASCULAR DISEASES
THERAPY
HEART
COMPUTERIZED SIMULATION
THERAPEUTIC USES