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In this paper, we discuss a new system to make impedance matching automatically for a re-entrant resonant cavity applicator for brain tumor hyperthermia treatment non-invasively. We have already discussed about the effectiveness of the heating method using manual type impedance matching controller, with experiments of heating an agar phantom and computer simulations. However, it becomes difficult...
This paper discusses radio frequency (RF) interstitial hyperthermia for brain tumors with a developed needle type applicator made of a shape memory alloy (SMA). The problem with the heating method of interstitial hyperthermia is the small heating area. So, we proposed a new heating method using a needle type electrode made of SMA which consists of nickel (Ni), copper (Cu) and titanium (Ti) for expanding...
We have already confirmed the effectiveness of the re-entrant resonant cavity applicator system with non-invasive experiments of heating cylindrical agar phantoms and computer simulations. This paper discusses the heating properties of the developed heating system with a human head model made of agar for brain tumor hyperthermia treatment.
In this paper, we propose a new heating method in which we use shape memory alloy (SMA) in a needle type applicator for brain tumor hyperthermia. In order to expand the heating area of a needle type applicator and to control the heating pattern for various sizes of tumors, some kinds of SMA needle type applicators were developed. To apply the proposed heating method safely to clinical hyperthermia,...
This paper discusses radio frequency (RF) interstitial hyperthermia for a brain tumor with a needle type applicator made of a shape memory alloy (SMA). In this method, it is necessary to make appropriate thermal distribution to the region of the brain tumor. However, it is not easy to predict the thermal distribution during the heating. We estimated the temperature distribution inside an agar phantom...
In this paper, we have proposed a new heating method in which high frequency electric fields in a re-entrant type resonant cavity are used for the heating of deeply seated tumors. In this method, a human head is placed between the gap of the inner re-entrant cylinders, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human head and the applicator...
This paper discusses a new method to control the heating area of a re-entrant resonant cavity applicator for brain tumor hyperthermia treatment non-invasively. We have already discussed about the effectiveness of a developed system with experiments of heating an agar phantom and computer simulations. Here, in order to heat a deep brain tumor, we propose the heating method of using several electromagnetic...
A re-entrant type resonant cavity applicator for brain tumor hyperthermia treatment is presented. In this method, a human brain is placed between the gap of the inner re-entrant cylinders without contact. This cavity has a window for insertion of the human head. Here, first, to design and construct a resonant cavity applicator, the results of the temperature distribution inside an agar phantom and...
A re-entrant type resonant cavity applicator for brain tumor hyperthermia treatment is presented. In this method, a human brain is placed between the gap of the inner re-entrant cylinders without contact. This cavity has a window for insertion of the human head. Here, first, to design and construct a resonant cavity applicator, the results of the temperature distribution inside an agar phantom and...
This paper discusses the heating properties of a new type hyperthermia system composed of a re-entrant type resonant cavity applicator for a deep tumor of the abdominal region. In this heating method, a human body is placed between the two inner electrodes, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human body and the applicator. First,...
A re-entrant type resonant cavity applicator for brain tumor hyperthermia treatment is presented. In this method, a human head is placed between the gap of the inner re-entrant cylinders, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human head and the applicator. First, the comparison of the computer simulation and experimental results...
A re-entrant type resonant cavity applicator for brain tumor hyperthermia treatment is presented. In this method, a human head is placed between the gap of the inner re-entrant cylinders, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human head and the applicator. First, the comparison of the computer simulation and experimental results...
A re-entrant type resonant cavity applicator for brain tumor hyperthermia treatment is presented. In this method, a human brain is placed between the gap of the inner re-entrant cylinders without contact. This cavity has a window for insertion of the human head. Here, first, to design and construct a resonant cavity applicator, the results of the temperature distribution inside an agar phantom and...
This paper discusses the heating properties of a new type hyperthermia system composed of a re-entrant type resonant cavity applicator for a deep tumor of the abdominal region. In this heating method, a human body is placed between the two inner electrodes, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human body and the applicator. First,...
A re-entrant type resonant cavity applicator for brain tumor hyperthermia treatment is presented. In this method, a human head is placed between the gap of the inner re-entrant cylinders, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human head and the applicator. First, the comparison of the computer simulation and experimental results...
This paper discusses the heating properties of a new type hyperthermia system composed of a re-entrant type resonant cavity applicator for a deep tumor of the abdominal region. In this heating method, a human body is placed between the two inner electrodes, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human body and the applicator. First,...
This paper discusses new methods to control the heating pattern of the prototype resonant cavity applicator for deep tumor hyperthermia treatment. We have already confirmed the effectiveness of the developed heating system with experiments using agar phantoms and computer simulations. Here, the following two methods to control the heating pattern were proposed. In the first method, a human body, which...
A re-entrant type resonant cavity applicator for deep tumor hyperthermia treatment was presented. In this method, a human body is placed between the gap of the inner re-entrant cylinders, and is heated with electromagnetic fields stimulated in the cavity without contact between the surface of the human body and the applicator. In this paper, two methods to control the heating pattern were proposed...
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