Journal ArticleDOI
The Effects of Driving Frequency and Antenna Length on Power Deposition Within a Microwave Antenna Array Used for Hyperthermia
TLDR
The theory of the linear, insulated antenna embedded in an electrically dense medium is applied to microwave antennas used for hyperthermia cancer therapy and the pattern of power deposition is computed.Abstract:
The theory of the linear, insulated antenna embedded in an electrically dense medium is applied to microwave antennas used for hyperthermia cancer therapy. The pattern of power deposition is computed for a square array of four antennas with a side length of 3 cm under the assumption of no coupling among antennas. The driving frequency is set to seven values between 300 and 915 MHz, and the antenna halflength is set to three values: 3 cm, 6 cm, and the resonant value.read more
Citations
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Journal ArticleDOI
Nanoparticles for photothermal therapies.
Daniel Jaque,L. Martínez Maestro,B. del Rosal,Patricia Haro-González,Antonio Benayas,Antonio Benayas,José Luis Plaza,E. Martín Rodríguez,J. García Solé +8 more
TL;DR: The current status of the use of nanoparticles for photothermal treatments is reviewed in detail, paying special attention to the physical mechanisms at the root of the light-to-heat conversion processes.
Journal ArticleDOI
Design optimization of interstitial antennas
Magdy F. Iskander,A.M. Tumeh +1 more
TL;DR: It is shown that an insulation-to-center-conductor diameter ratio between 1.5 to 2.0 is optimum for uniform Teflon insulation, and that a multisection arrangement with the thinnest insulation near the antenna tip has superior performance compared with the uniform-insulation or other multisected designs.
Journal ArticleDOI
Microwave Tissue Ablation: Biophysics, Technology and Applications
TL;DR: The basic biophysics of microwave tissue heating is reviewed, an overview of the design and operation of current equipment is provided, and areas for future research are outlined.
Patent
Microwave thermal therapy of cardiac tissue
TL;DR: In this article, a method of applying microwave energy to cardiac tissue uses a catheter adapted for insertion into a cardiac chamber and which includes a microwave antenna, a cooling lumen structure, and an inflatable cooling balloon.
Patent
Catheters for treating prostate disease
TL;DR: In this article, the prostate tissue more distal to the microwave antenna can be heated without heating any non-prostate tissue beyond a maximum safe temperature, and reduces the temperature differential between the heated prostate tissue and more proximate prostate tissue.
References
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Journal ArticleDOI
The Electromagnetic Field of an Insulated Antenna in a Conducting Or Dielectric Medium
TL;DR: In this paper, the distribution of current in and the admittance of a center-driven dipole embedded in a general medium are reviewed, and the electric field generated by the currents in the dipole is derived for all points outside the antenna.
Journal ArticleDOI
Dielectric properties of brain tissue between 0.01 and 10 GHz.
TL;DR: Empirical equations are given to summarise the dielectric properties of 'average' brain tissue at 37 degrees C for future theoretical studies of microwave absorption in the head.
Journal ArticleDOI
Interstitial hyperthermia in combination with brachytherapy.
Christopher T. Coughlin,Evan B. Douple,John W. Strohbehn,W L Eaton,B.S. Trembly,Terence Z. Wong +5 more
TL;DR: Flexible coaxial cables were modified to serve as microwave antennas operating at a frequency of 915 MHz that were inserted into nylon afterloading tubes that had been implanted in tumors using conventional interstitial implantation techniques for iridium-192 seed brachytherapy.
Journal ArticleDOI
Blood Flow Effects on the Temperature Distributions from an Invasive Microwave Antenna Array Used in Cancer Therapy
TL;DR: The results indicate that if the blood flow rate is equal to or less than that in resting muscle there should not be large differences compared to the case of no blood flow, however, for blood flow rates ten times that in rested muscle, the temperature distributions are significantly altered.