Feasibility of a quality assurance system for electromagnetic field therapy

Heehun Sung, Jong Hyun Kim, Jaehyeon Seo, Geon Oh, Yunhui Jo, Yongha Gi, Hyunwoo Kim, Myonggeun Yoon

Research output: Contribution to journalArticlepeer-review

Abstract

This study was designed to evaluate the effectiveness of a newly developed quality assurance system for electromagnetic field therapy called tumor treating fields therapy, which uses an alternating electric field to treat cancer based on an intermediate frequency of 100–300 kHz. The quality assurance system for electromagnetic field therapy consisted of a water phantom, a probe, and a digital data acquisition (DAQ) board. Low intensity alternating electric fields (200 kHz, 0–.1 V/cm) were created within the water phantom using a function generator and a high voltage amplifier. The electric potential formed inside the water phantom was measured using the probe and DAQ board. The electric field intensity was derived by measuring the electric potential at the 190 points (19 × 10 cm2) of the midplane. Accuracy was evaluated by gamma index analysis, which compared the measured electric field and the simulation result. The mean difference between the simulation result and the measured electric potentials within the water phantom was 0.31 V. The gamma passing rate for the tolerance levels of 0.5 V/5 mm was 95.5% for electric potential comparison showing good agreement between simulation and experimental results. The mean difference between the electric field distribution within the water phantom and the simulated values was 0.09 V/cm and the gamma passing rate for the tolerance levels of (0.2 V/cm)/5 mm was ~ 97.3%. These results confirmed the feasibility of the quality assurance system for electromagnetic field therapy.

Original languageEnglish
Pages (from-to)1029-1038
Number of pages10
JournalJournal of the Korean Physical Society
Volume81
Issue number11
DOIs
Publication statusPublished - 2022 Dec

Bibliographical note

Funding Information:
This work was supported by the Korea Medical Device Development Fund grant funded by the Korea government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, the Ministry of Food and Drug Safety) (Project Number: 202012E01) and the National Research Foundation of Korea (NRF) Grant funded by the Korea government (MSIT) (2021R1A2C2008695) (2022R1A2C1010337).

Publisher Copyright:
© 2022, The Korean Physical Society.

Keywords

  • Electric potential
  • Electromagnetic field therapy
  • Quality assurance
  • Tumor treating fields

ASJC Scopus subject areas

  • General Physics and Astronomy

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