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Enhancing the properties of beam forming bolus in hyperthermia: numerical simulation and empirical verification

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Abstract

In this paper we present a simulation study of the induced specific absorption rate (SAR) within the phantom produced by radiofrequency radiation from a 8 MHz capacitive applicator. The main focus of the current study is on demonstrating the beam shaping properties of the bolus system as well as its effect on controlling the therapeutic area. Different electrical conductivities and geometries of the bolus were considered in the simulation of induced SAR distributions in a muscle-equivalent model with uniform dielectric properties. To validate the presented model, we carried out a comparison between the SAR simulation results and the temperature measurements in an agar split-phantom and an excellent agreement was observed.

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Authors and Affiliations

  1. Department of Engineering, Science and Research Branch, Islamic Azad University, 14155-775, Tehran, 14778 93855, Islamic Republic of Iran

    Seyed Ali Aghayan & Dariush Sardari

  2. Department of Medical Physics, Tehran University of Medical Science, Tehran, Islamic Republic of Iran

    Seied Rabi Mehdi Mahdavi

  3. Department of Physics, Shahrood Branch, Islamic Azad University, Shahrood, Iran

    Maryam Mohammadi

Authors
  1. Seyed Ali Aghayan
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  2. Dariush Sardari
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  3. Seied Rabi Mehdi Mahdavi
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  4. Maryam Mohammadi
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Correspondence to Seyed Ali Aghayan.

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Aghayan, S.A., Sardari, D., Mahdavi, S.R.M. et al. Enhancing the properties of beam forming bolus in hyperthermia: numerical simulation and empirical verification. Australas Phys Eng Sci Med 37, 691–703 (2014). https://doi.org/10.1007/s13246-014-0306-5

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  • DOI: https://doi.org/10.1007/s13246-014-0306-5

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