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IEEE Transactions on Microwave Theory and Techniques
Volume 48 Number 11, November 2000

Table of Contents for this issue

Complete paper in PDF format

Heating Characteristics of Array Applicator Composed of Two Coaxial-Slot Antennas for Microwave Coagulation Therapy

Kazuyuki Saito, Student Member, IEEE Yoshihiko Hayashi, Hiroyuki Yoshimura, Member, IEEE and Koichi Ito Member, IEEE

Page 1800.

Abstract:

Microwave coagulation therapy (MCT) has been used mainly for the treatment of small-size tumors. The operating frequency is 2450 MHz for the present MCT. In conventional MCT antennas, there exists a problem that the size of the coagulated region is insufficient. In this paper, we analyzed the heating characteristics of an array applicator composed of two coaxial-slot antennas by using computer simulation. The validity of the analysis was confirmed by the experiment using the liver of a pig. Moreover, we investigated the relation between the array spacing and heating volume produced by the two-antenna array applicator. As a result, the coagulated region required in the MCT could almost be achieved under the conditions that the net input power of each antenna was 50 W and the array spacing was 10 mm.

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