Analysis and analytical characterization of bioheat transfer during radiofrequency ablation

Journal of Biomechanics
Keyong WangKambiz Vafai

Abstract

Understanding thermal transport and temperature distribution within biological organs is important for therapeutic aspects related to hyperthermia treatments such as radiofrequency ablation (RFA). Unlike surface heating, the RFA treatment volumetrically heats up the biological media using a heating probe which provides the input energy. In this situation, the shape of the affected region is annular, which is described by an axisymmetric geometry. To better understand the temperature responses of the living tissues subject to RFA, comprehensive characteristics of bioheat transport through the annular biological medium is presented under local thermal non-equilibrium (LTNE) condition. Following the operational features of the RFA treatment, based on the porous media theory, analytical solutions have been derived for the blood and tissue temperature distributions as well as an overall heat exchange correlation in cylindrical coordinates. Our analytical results have been validated against three limiting cases which exist in the literature. The effects of various physiological parameters, such as metabolic heat generation, volume fraction of the vascular space, ratio of the effective blood to tissue conductivities, different biologi...Continue Reading

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Citations

Aug 1, 2015·Neuromodulation : Journal of the International Neuromodulation Society·John Patrick Abraham, Brian Douglas Plourde
Jul 21, 2015·Burns : Journal of the International Society for Burn Injuries·John P AbrahamKenneth R Diller
Jun 28, 2017·Neuromodulation : Journal of the International Neuromodulation Society·Brian PlourdeJohn Abraham
Apr 3, 2020·Electromagnetic Biology and Medicine·Sundeep Singh, Roderick Melnik
Dec 12, 2018·Annals of Biomedical Engineering·Assunta AndreozziGiuseppe Peter Vanoli
Dec 8, 2020·Computer Methods and Programs in Biomedicine·Assunta AndreozziGiuseppe Peter Vanoli

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