[Simulation of SAR and temperature distribution for tumor RF thermotherapy with double-frequencies and double-plates]
- Resource Type
- Authors
- Zhennan, Zhao; Fengtong, Li; Haipan, Wang
- Source
- Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi. 23(1)
- Subject
- Electromagnetic Fields
Neoplasms
Temperature
Humans
Computer Simulation
Thermal Conductivity
Hyperthermia, Induced
Models, Theoretical
- Language
- ISSN
- 1001-5515
The model establishment and numerical simulation of specific absorption rate (SAR) and the unsteady-state temperature distribution for radio frequency (RF) thermotherapy with double-frequencies and double-plates are presented in this paper. The model can correctly reflect the attenuation of electromagnetic wave in the biotissue. The variation of perfusion with temperature and the lower perfusion in tumor tissue are fully considered in the simulation of unsteady-state temperature profiles. Also presented are detailed analyses and discussions on the characteristics of SAR and temperature profiles, and the effects of the plates location and power as well as of the perfusion on the depth of effective treatment.