FDTD analysis of temperature elevation in the lens of human and rabbit models due to near-field and far-field exposures at 2.45 GHz
| Autor: | Masao Taki, Hiroshi Sasaki, Akimasa Hirata, Masami Kojima, Ilkka Laakso, Soichi Watanabe, Osamu Fujiwara, K. Sasaki, Takuya Oizumi |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Male Hot Temperature Materials science genetic structures Radio Waves TEMPERATURE ELEVATION Near and far field Models Biological Cataract Optics Cataracts Lens Crystalline medicine Animals Humans Computer Simulation Radiology Nuclear Medicine and imaging Microwaves Radiation Radiological and Ultrasound Technology business.industry Public Health Environmental and Occupational Health Finite-difference time-domain method Dose-Response Relationship Radiation Rabbit (nuclear engineering) General Medicine medicine.disease eye diseases medicine.anatomical_structure Lens (anatomy) Human eye Thermal pain Rabbits sense organs Skin Temperature business |
| Zdroj: | Radiation Protection Dosimetry. 155:284-291 |
| ISSN: | 1742-3406 0144-8420 |
| Popis: | The eye is said to be one of the most sensitive organs to microwave heating. According to previous studies, the possibility of microwave-induced cataract formation has been experimentally investigated in rabbit and monkey eyes, but not for the human eye due to ethical reasons. In the present study, the temperature elevation in the lens, the skin around the eye and the core temperature of numerical human and rabbit models for far-field and near-field exposures at 2.45 GHz are investigated. The temperature elevations in the human and rabbit models were compared with the threshold temperatures for inducing cataracts, thermal pain in the skin and reversible health effects such as heat exhaustion or heat stroke. For plane-wave exposure, the core temperature elevation is shown to be essential both in the human and in the rabbit models as suggested in the international guidelines and standards. For localised exposure of the human eye, the temperature elevation of the skin was essential, and the lens temperature did not reach its threshold for thermal pain. On the other hand, the lens temperature elevation was found to be dominant for the rabbit eye. |
| Databáze: | OpenAIRE |
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