On the Use of Conformal Models and Methods in Dosimetry for Nonuniform Field Exposure

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On the Use of Conformal Models and Methods in Dosimetry for Nonuniform Field Exposure. / Poljak, Dragan; Cvetkovic, Mario; Bottauscio, Oriano; Hirata, Akimasa; Laakso, Ilkka; Neufeld, Esra; Reboux, Sylvain; Warren, Craig; Giannopolous, Antonis; Costen, Fumie.

In: IEEE Transactions on Electromagnetic Compatibility, Vol. 60, No. 2, 04.2018, p. 328-337.

Research output: Contribution to journalArticleScientificpeer-review

Harvard

Poljak, D, Cvetkovic, M, Bottauscio, O, Hirata, A, Laakso, I, Neufeld, E, Reboux, S, Warren, C, Giannopolous, A & Costen, F 2018, 'On the Use of Conformal Models and Methods in Dosimetry for Nonuniform Field Exposure' IEEE Transactions on Electromagnetic Compatibility, vol. 60, no. 2, pp. 328-337. https://doi.org/10.1109/TEMC.2017.2723459

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Author

Poljak, Dragan ; Cvetkovic, Mario ; Bottauscio, Oriano ; Hirata, Akimasa ; Laakso, Ilkka ; Neufeld, Esra ; Reboux, Sylvain ; Warren, Craig ; Giannopolous, Antonis ; Costen, Fumie. / On the Use of Conformal Models and Methods in Dosimetry for Nonuniform Field Exposure. In: IEEE Transactions on Electromagnetic Compatibility. 2018 ; Vol. 60, No. 2. pp. 328-337.

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@article{866d8270d26a4a909ede5aaffe4ff7d7,
title = "On the Use of Conformal Models and Methods in Dosimetry for Nonuniform Field Exposure",
abstract = "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 to take into account numerical uncertainties when determining the limit values for human exposure. However, the rationale for this value is unsure. 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 using different methods by different research groups is important. In previous intercomparison studies for low-frequency exposures, only a few computational methods were used, and the computational scenario was limited to a uniform magnetic field exposure. This study presents an application of various numerical techniques used: different finite-element method (FEM) schemes, method of moments, and boundary-element method (BEM) variants, and, finally, by using a hybrid FEM/BEM approach. As a computational example, the induced electric field in the brain by the coil used in transcranial magnetic stimulation is investigated. Intercomparison of the computational results is presented qualitatively. Some remarks are given for the effectiveness and limitations of application of the various computational methods.",
keywords = "Brain modeling, Computational modeling, Dosimetry, Electromagnetics, Finite element analysis, Induced fields, low-frequency dosimetry, Method of moments, Numerical models, simplified brain model, sphere brain model, transcranial magnetic stimulation (TMS)",
author = "Dragan Poljak and Mario Cvetkovic and Oriano Bottauscio and Akimasa Hirata and Ilkka Laakso and Esra Neufeld and Sylvain Reboux and Craig Warren and Antonis Giannopolous and Fumie Costen",
year = "2018",
month = "4",
doi = "10.1109/TEMC.2017.2723459",
language = "English",
volume = "60",
pages = "328--337",
journal = "IEEE Transactions on Electromagnetic Compatibility",
issn = "0018-9375",
publisher = "Institute of Electrical and Electronics Engineers",
number = "2",

}

RIS - Download

TY - JOUR

T1 - On the Use of Conformal Models and Methods in Dosimetry for Nonuniform Field Exposure

AU - Poljak, Dragan

AU - Cvetkovic, Mario

AU - Bottauscio, Oriano

AU - Hirata, Akimasa

AU - Laakso, Ilkka

AU - Neufeld, Esra

AU - Reboux, Sylvain

AU - Warren, Craig

AU - Giannopolous, Antonis

AU - Costen, Fumie

PY - 2018/4

Y1 - 2018/4

N2 - 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 to take into account numerical uncertainties when determining the limit values for human exposure. However, the rationale for this value is unsure. 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 using different methods by different research groups is important. In previous intercomparison studies for low-frequency exposures, only a few computational methods were used, and the computational scenario was limited to a uniform magnetic field exposure. This study presents an application of various numerical techniques used: different finite-element method (FEM) schemes, method of moments, and boundary-element method (BEM) variants, and, finally, by using a hybrid FEM/BEM approach. As a computational example, the induced electric field in the brain by the coil used in transcranial magnetic stimulation is investigated. Intercomparison of the computational results is presented qualitatively. Some remarks are given for the effectiveness and limitations of application of the various computational methods.

AB - 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 to take into account numerical uncertainties when determining the limit values for human exposure. However, the rationale for this value is unsure. 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 using different methods by different research groups is important. In previous intercomparison studies for low-frequency exposures, only a few computational methods were used, and the computational scenario was limited to a uniform magnetic field exposure. This study presents an application of various numerical techniques used: different finite-element method (FEM) schemes, method of moments, and boundary-element method (BEM) variants, and, finally, by using a hybrid FEM/BEM approach. As a computational example, the induced electric field in the brain by the coil used in transcranial magnetic stimulation is investigated. Intercomparison of the computational results is presented qualitatively. Some remarks are given for the effectiveness and limitations of application of the various computational methods.

KW - Brain modeling

KW - Computational modeling

KW - Dosimetry

KW - Electromagnetics

KW - Finite element analysis

KW - Induced fields

KW - low-frequency dosimetry

KW - Method of moments

KW - Numerical models

KW - simplified brain model

KW - sphere brain model

KW - transcranial magnetic stimulation (TMS)

UR - http://www.scopus.com/inward/record.url?scp=85028939609&partnerID=8YFLogxK

U2 - 10.1109/TEMC.2017.2723459

DO - 10.1109/TEMC.2017.2723459

M3 - Article

VL - 60

SP - 328

EP - 337

JO - IEEE Transactions on Electromagnetic Compatibility

JF - IEEE Transactions on Electromagnetic Compatibility

SN - 0018-9375

IS - 2

ER -

ID: 15855190