Title
Modelovanje i analiza uticaja metalnih medicinskih implantata na raspodelu elektromagnetskog polja mobilnih telefona u tkivima korisnika
Creator
Jovanović, Dejan, 1989-
CONOR:
15029095
Copyright date
2021
Object Links
Select license
Autorstvo-Nekomercijalno-Bez prerade 3.0 Srbija (CC BY-NC-ND 3.0)
License description
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Language
Serbian
Cobiss-ID
Theses Type
Doktorska disertacija
description
Datum odbrane: 27.10.2021.
Other responsibilities
predsednik komisije
Cvetković, Zlata
član komisije
Raičević, Nebojša
član komisije
Krstić, Dejan
član komisije
Krasić, Dragan
Academic Expertise
Prirodno-matematičke nauke
Academic Title
-
University
Univerzitet u Nišu
Faculty
Elektronski fakultet
Group
Katedra za teorijsku elektrotehniku
Alternative title
Modeling and analysis of the metal medical implants influence on the distribution of mobile phones electromagnetic field within the user's tissue
Publisher
[D. B. Jovanović]
Format
212 listova
description
Bibliografija: listovi 191-207.
description
Theoretical electrical engineering
Abstract ()
The aim of this PhD thesis is to present the results determined in research on influence of certain metal medical implants in head and neck surgery on the distribution of penetrating electromagnetic field and the amount of absorbed energy within certain biological tissues due to exposure to RF radiation from mobile phones.
Within the research, several 3D numerical models in high resolution, were created. A 3D numerical model of the human head has been developed which, in terms of dimensions, morphology and tissue composition, corresponds to the characteristics of an adult's head, sufficiently to enable obtaining reliable results by applying appropriate numerical procedures. In addition, based on available 3D images of surgical interventions, 3D numerical models of individual metal medical implants have been created.
As a source of electromagnetic radiation, a modern smartphone with appropriate antennas for 3G and 4G mobile network have been used. Accordingly, calculations and analyzes were performed for the frequencies 1800 MHz and 2600 MHz, which correspond to the carrier frequencies of the mentioned mobile networks.
The paper presents the results for the electric field distribution and the amount of absorbed electromagnetic energy of a mobile phone inside the user head model in the presence of the following metal medical implants:
- Titanium plate for the reconstruction of a major skull defect;
- Titanium dynamic mesh for the reconstruction of minor skull defects;
- Titanium plate and screws used in jaw traumatology;
- Dental implants and
- Fixed denture.
In order to determine the degree of influence of these metal medical implants on the electric field distribution and the amount of absorbed energy of the electromagnetic wave, within the biological tissues of the mobile phone users, a comparative analysis of the user head model with and without metal medical implants has been performed. During the analysis, the same mobile phone electromagnetic radiation exposure conditions were assumed for both models.
A comprehensive analysis of the obtained results, related to the spatial distribution of electric field intensity and absorbed electromagnetic energy, concluded that the presence of metal medical implants affects the change in the value of electric field intensity and
SAR, within biological tissues with installed implants.
Authors Key words
Elektromagnetsko zračenje, numerički modeli, metalni medicinski implantati, mobilni telefon, biološko tkivo, SAR
Authors Key words
Electromagnetic radiation, numerical models, metal medical implants, mobile phone, biological tissue, SAR
Classification
621.395+537.531]:576.7(043.3)
Subject
T 191 Visokofrekventna tehnologija, mikrotalasi
Type
Tekst
Abstract ()
The aim of this PhD thesis is to present the results determined in research on influence of certain metal medical implants in head and neck surgery on the distribution of penetrating electromagnetic field and the amount of absorbed energy within certain biological tissues due to exposure to RF radiation from mobile phones.
Within the research, several 3D numerical models in high resolution, were created. A 3D numerical model of the human head has been developed which, in terms of dimensions, morphology and tissue composition, corresponds to the characteristics of an adult's head, sufficiently to enable obtaining reliable results by applying appropriate numerical procedures. In addition, based on available 3D images of surgical interventions, 3D numerical models of individual metal medical implants have been created.
As a source of electromagnetic radiation, a modern smartphone with appropriate antennas for 3G and 4G mobile network have been used. Accordingly, calculations and analyzes were performed for the frequencies 1800 MHz and 2600 MHz, which correspond to the carrier frequencies of the mentioned mobile networks.
The paper presents the results for the electric field distribution and the amount of absorbed electromagnetic energy of a mobile phone inside the user head model in the presence of the following metal medical implants:
- Titanium plate for the reconstruction of a major skull defect;
- Titanium dynamic mesh for the reconstruction of minor skull defects;
- Titanium plate and screws used in jaw traumatology;
- Dental implants and
- Fixed denture.
In order to determine the degree of influence of these metal medical implants on the electric field distribution and the amount of absorbed energy of the electromagnetic wave, within the biological tissues of the mobile phone users, a comparative analysis of the user head model with and without metal medical implants has been performed. During the analysis, the same mobile phone electromagnetic radiation exposure conditions were assumed for both models.
A comprehensive analysis of the obtained results, related to the spatial distribution of electric field intensity and absorbed electromagnetic energy, concluded that the presence of metal medical implants affects the change in the value of electric field intensity and
SAR, within biological tissues with installed implants.
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