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Radiofrequency (RF) ablation uses RF current to heat and kill cancer applied via an electrode inserted under image-guidance, and is in clinical use for tumors in liver, lung kidney, and bone. Mathematical models are frequently used to determine tissue temperature during RF ablation, but most prior models do not include accurate implementation of power control algorithms as are used in clinical devices...
The electric properties (EPs) of biological tissue, i.e., the electric conductivity and permittivity, can provide important information in the diagnosis of various diseases. The EPs also play an important role in specific absorption rate calculation, a major concern in high-field MRI, as well as in nonmedical areas such as wireless telecommunications. The high-field MRI system is accompanied by significant...
This paper is focused on the influence of the inhomogeneous and anisotropic conductivity of white matter on magnetic and electric field distribution. The simulation is performed on a realistic human head with five-layer tissues. The results show that the magnetic flux density measurement is more similar in sensitivity with the conductivity perturbation than the potential measurement. Some electric...
The paper deals with the human exposure assessment to extremely low frequency (ELF) electric field due to overhead power lines. The formulation is based on a realistic human body representation taking into account different conductivities for various tissues inside the body. In particular, the influence on conductivity variation to the induced current densities and electric fields is investigated...
Bedside monitoring of lung recruitment is a key feature in the ventilatory management of patients with acute respiratory distress syndrome. Electrical impedance tomography is a relatively new imaging technique which reconstructs the electrical conductivity distribution in a lung cross section from electrical measurements made on electrodes placed on the surface of the thorax. The induced conductivity...
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