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In the last decade, the study of methodologies for heating biological tissue has been an area of most interest in biology and medicine. As a result, the number of electrode solutions has grown in the past years. In this work, we study the capability of using a tubular electrode for heating biological tissue. To test this possibility, liver samples ex-vivo were used and numerical simulations were made...
In this paper we outline our main findings about the differences between the use of the Bioheat Equation and the Hyperbolic Bioheat Equation in theoretical models for Radiofrequency (RF) ablation. At the moment, we have been working on the analytical approach to solve both equations, but more recently, we have considered numerical models based on the Finite Element Method (FEM). As a first step to...
We have developed a theoretical model to predict the outcome (i.e. failure/success) of radio-frequency ablation (RFA) therapy via computer calculations of the propagation of action potential in the presence of a ventricular reentry circuit. Our results show that the anatomy (i.e. infarct scar sizes) and the electrical conductivity of the channel between the scars (named isthmus) are critical to inducibility...
Local hyperthermia is usually administered by noninvasive microwave applicators which produce therapeutic temperatures only to depths of 2-3 cm. The deeper penetration theoretically possible with RF applicators is not realized because of the practical limitations of applicator dimensions. Temperature distributions are generally nonuniform due to the attenuation of power with depth, the nonuniformity...
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