Abstract

Info

Title:: Distributions of electromagnetic field and specific absorption ratio caused by radiofrequency cosmetic electrode in human brain

Author(s):: QI Xinzhe1; LU Mai2; 1. School of Automation and Electrical Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China; 2. Key Laboratory of Opto-Electronic Technology and Intelligent Control (Ministry of Education), Lanzhou Jiaotong University, Lanzhou 730070, China

Keywords:: Keywords: radiofrequency cosmetic; human head model; electromagnetic field; specific absorption ratio

Abstract:: Abstract: The study aims to calculate the magnetic field strength, electric field strength and specific absorption ratio (SAR) in human head while using radiofrequency electrodes for radiofrequency cosmetic treatment at a frequency of 40.68 MHz. The obtained results are compared with the limits set by International Commission on Non-Ionizing Radiation Protection (ICNIRP). The results show that the maximum magnetic field strength in brain tissue was 0.06 A/m, about 82.19% of the threshold set by ICNIRP, and that the maximum electric field strength was 5.5 V/m, about 19.64% of the threshold set by ICNIRP, and that the maximum SAR was about 0.03 W/kg, far lower than 2 W/kg in the ICNIRP standard. All the results were within the limits set by ICNIRP, indicating that the electromagnetic exposure produced by radiofrequency cosmetic electrode isn’t detrimental to one’s health.