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Thermal Impact on the Human Oral Cavity Exposed to Radiation from Biomedical Devices Operating in the Terahertz Frequency Range

  • Oliver Spathmann
  • René Schürmann
  • Martin Zang
  • Joachim Streckert
  • Volkert Hansen
  • Mehrdad Saviz
  • Markus Clemens
Article
  • 135 Downloads

Abstract

New medical applications, e.g., aiming at cancer research support, are currently extending the number of technical systems operating in the terahertz (THz) frequency range. This field of applications results in potentially exposed body areas, which have not been taken into account in earlier literature according to exposure assessments at THz frequencies. Due to the small penetration depths in the regarded frequency range, between a few 100 and some micrometers at 0.1 and 10 THz respectively, it was adequate in former analyses to consider near-surface body tissues, e.g., the human eyes or the skin while being exposed to electromagnetic fields. Now, the consideration of body internal tissues becomes necessary since small mobile medical devices can potentially expose tissues underneath the body surface, e.g., inside the oral cavity. In this paper, a multi-level approach is employed in order to estimate electric field strengths and temperature elevations in the human oral cavity by use of numerical computations. Moreover, the urgently needed dielectric properties of the considered tissues, which are not yet available in published databases, are provided here.

Keywords

Dielectric tissue data Human oral cavity tissue exposure Numerical simulations Temperature elevation Terahertz 

Notes

Funding Information

This work was funded by the Deutsche Forschungsgemeinschaft (DFG) under grant no. CL143/12-1.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Chair of Electromagnetic TheoryUniversity of WuppertalWuppertalGermany
  2. 2.Department of Biomedical EngineeringAmirkabir University of TechnologyTehranIran

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