@misc{oai:repo.qst.go.jp:00061211,
 author = {Saito, Kazuyuki and Ito, Koichi and et.al and 齊藤 一幸 and 伊藤 公一},
 month = {Aug},
 note = {1. Introduction
In recent years, various types of medical applications of microwaves have widely been investigated and reported [1]. In particular, minimally invasive microwave thermal therapies using thin coaxial antennas are of a great interest. They are interstitial microwave hyperthermia [2] and microwave coagulation therapy (MCT) [3] for medical treatment of cancer, cardiac catheter ablation for ventricular arrhythmia treatment [4], thermal treatment of BPH (Benign Prostatic Hypertrophy) [5], etc. Up to now, the authors have been studying such thin coaxial antennas for the interstitial microwave hyperthermia.
Hyperthermia is one of the modalities for cancer treatment, utilizing the difference of thermal sensitivity between tumor and normal tissue. In this treatment, the tumor is heated up to the therapeutic temperature between 42 and 45 degrees without overheating the surrounding normal tissues. We can enhance the treatment effect of other cancer treatments such as radiotherapy and chemotherapy by using them together with the hyperthermia.
There are a few methods for heating the cancer cells inside the body. Especially, the authors have been studying the coaxial-slot antenna [6], which is one of the thin microwave antennas, for the interstitial microwave hyperthermia. As a result of these investigations, some cases of actual treatments could be realized by use of our developed antenna and the effectiveness of the treatments could be confirmed.
In this paper, we describe the numerical calculation of the temperature distribution around the coaxial-slot antenna for the treatment of brain tumor. It is considered that the interstitial hyperthermia is effective for the treatment of brain tumor, because it is difficult to treat such a tumor by surgical operation, radiotherapy, etc. Basically, the technique of the interstitial hyperthermia for brain tumor is the same as the treatment for the other portion of the human body. However, the temperature control during the treatment is more important than the other cases. Therefore, in this paper, the temperature distribution around the coaxial-slot antenna placed in a brain tumor is calculated by use of realistic human head model.
\nProceedings of the 2005 International Symposium on Antennas and Propagation, 2005 International Symposium on Antennas and Propagation},
 title = {Numerical calculation of temperature distribution around a coaxial-slot antenna aiming at treatment of brain tumor},
 year = {2005}
}