Heating characteristics with a re-entrant type applicator in consideration of tissue blood flow rate.
We have proposed the heating system based on a re-entrant cavity that can heat a localized deep region in a living body noninvasively. This system is superior in a local heating characteristic. However, when the living body was treated as a heating object during thermotherapy (hyperthermia), the effect of blood flow changes on a heating characteristic has to be examined. The purpose of this study was to establish the quantitative evaluation method of heating characteristics for a re-entrant type applicator. The numerical analyses by using three-dimensional finite element method in consideration of a blood flow and fundamental experiments with prototype system were carried out. Since the difference of numerical analyses and experiments was as small as about 4.2 [%] by evaluation with full width at half maximum (FWHM), the validity of this numerical analysis was confirmed.
Graduate school of Mechanical Engineering, Meiji University, 1-1-1 Higashi-mita, Tama-ku, Kawasaki 214-8571, Japan. ce12010@meiji.ac.jp
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Ishimori
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Ishihara
D020342:Finite Element Analysis; D006801:Humans; D006979:Hyperthermia, Induced; D009369:Neoplasms / Q000098:blood supply / Q000628:therapy; D012039:Regional Blood Flow