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PUBLICATIONS

18/10/2017

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nk@itis.ethz.ch

 

Activation of Signaling Cascades by Weak Extremely Low Frequency Electromagnetic Fields

Einat Kapri-Pardes, Tamar Hanoch, Galia Maik-Rachline, Manuel Murbach, Patricia L. Bounds, Niels Kuster, and Rony Seger Cellular Physiology and Biochemistry, Volume 43, pp. 1533–1546, online October 16, 2017, doi: 10.1159/000481977

 
PUBLICATIONS

13/09/2017

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nk@itis.ethz.ch

 

Novel hyperthermia applicator system allows adaptive treatment planning: Preliminary clinical results in tumour-bearing animals

S. Dressel, M.-C. Gosselin, M. H. Capstick, E. Carrasco, M. S. Weyland, S. Scheidegger, E. Neufeld, N. Kuster, S. Bodis, and C. Rohrer Bley, Veterinary and Comparative Oncology, online 11 September, 2017, doi: 10.1111/vco.12340

 
On the Use of Conformal Models and Methods in Dosimetry for Non-Uniform Field Exposure
20/07/2017

On the Use of Conformal Models and Methods in Dosimetry for Non-Uniform Field Exposure

Dragan Poljak, Mario Cvetković, Oriano Bottauscio, Akimasa Hirata, Ilkka Laakso, Esra Neufeld, Sylvain Reboux, Craig Warren, Antonis Giannopolous, and Fumie Costen, IEEE Transactions on Electromagnetic Compatibility, online 18 July, 2017, doi: 10.1109/TEMC.2017.2723459

Numerical artifacts affect the reliability of computational dosimetry of human exposure to low-frequency electromagnetic fields. In the guidelines of the International Commission of Non-Ionizing Radiation Protection, a reduction factor of 3 was considered sufficient to account for numerical uncertainties associated with determination of limitting values for human exposure. However, the rationale for this value is insecure. The IEEE International Committee on Electromagnetic Safety has published a research agenda to resolve numerical uncertainties in low-frequency dosimetry. For this purpose, intercomparison of results computed by different research groups using a variety of methods is important. In previous intercomparison studies for low-frequency (LF) exposures, only a few computational methods were used, and the computational scenario was limited to a uniform magnetic field exposure. In this study, we present the application of various numerical techniques, including several finite-element method (FEM) schemes, method of moments (MoM), and boundary-element method (BEM) variants, and, finally, a hybrid FEM/BEM approach. As a computational example, the electric field induced in the brain by the coil used in transcranial magnetic stimulation is investigated. Intercomparison of the computational results is presented qualitatively. Some remarks regarding the effectiveness and limitations of the application of the various computational methods are provided.

The scientific and technical impact of the study can be summarized as:

  • Intercomparison of several commputational methods applied to conformal models in LF dosimetry, including nonuniform exposure, is reviewed and presented
  • The MoM, FEM, BEM, and hybrid FEM/BEM approaches were implemented to investigate the transcranial magnetic stimulation setup for a sphere and simplified homogeneous isotropic brain geometry
  • Differences attributable to the implementation of methods for nonuniform exposure are addressed
  • For future work, precise source information and the specific evaluation trajectories for the planes and setups investigated could be included for more quantitative comparison of the variations introduced by the different approximation methods 
PUBLICATIONS

17/07/2017

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nk@itis.ethz.ch

 

Effects of body habitus on internal radiation dose calculations using the 5-year-old anthropomorphic male models

Tianwu Xie, Niels Kuster, and Habib Zaidi, Physics in Medicine & Biology, Volume 62, Issue 15, pp. 6185–6206, online 13 July 2017, doi: 10.1088/1361-6560/aa75b4

 
PUBLICATIONS

01/06/2017

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nk@itis.ethz.ch

 

Noninvasive Deep Brain Stimulation via Temporally Interfering Electric Fields

Nir Grossman, David Bono, Nina Dedic, Suhasa B. Kodandaramaiah, Andrii Rudenko, Ho-Jun Suk, Antonino M. Cassara, Esra Neufeld, Niels Kuster, Li-Huei Tsai, Alvaro Pascual-Leone, and Edward S. Boyden, Cell, Volume 169, Issue 6, pp. 1029–1041, online 1 June 2017, doi: 10.1016/j.cell.2017.05.024

 
PUBLICATIONS

05/04/2017

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nk@itis.ethz.ch

 

Life-Time Dosimetric Assessment for Mice and Rats Exposed in Reverberation Chambers for the Two-Year NTP Cancer Bioassay Study on Cell Phone Radiation

Yijian Gong, Myles H. Capstick, Sven Kuehn, Perry F. Wilson, John M. Ladbury, Galen Koepke, David L. McCormick, Ronald L. Melnick, and Niels Kuster, IEEE Transactions on Electromagnetic Compatibility, online 17 March 2017, doi: 10.1109/TEMC.2017.2665039

 
PUBLICATIONS

04/04/2017

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nk@itis.ethz.ch

 

A Radio Frequency Radiation Exposure System for Rodents Based on Reverberation Chambers

Myles H. Capstick, Sven Kuehn, Veronica Berdinas-Torres, Yijian Gong, Perry F. Wilson, John M. Ladbury, Galen Koepke, David L. McCormick, James Gauger, Ronald L. Melnick, and Niels Kuster, IEEE Transactions on Electromagnetic Compatibility, Volume 59, Issue 4, pp. 1041–1052. August 2017, online 17 March 2017, doi: 10.1109/TEMC.2017.2649885

 
PUBLICATIONS

28/03/2017

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nk@itis.ethz.ch

 

Computational hybrid anthropometric paediatric phantom library for internal radiation dosimetry

Tianwu Xie, Niels Kuster, and Habib Zaidi, Physics in Medicine and Biology, Volume 62, Issue 8, pp. 3263–3283. 21 April, 2017, online 28 March 2017, doi: 10.1088/1361-6560/aa63d0