| SU Zhen-tao,YANG Guo-shan.Calculation of SAR in rats exposed to pulsed high power microwave irradiation[J].Chinese Journal of Radiological Medicine and Protection,2004,24(6):561-563 |
| Calculation of SAR in rats exposed to pulsed high power microwave irradiation |
| Received:January 20, 2004 |
| DOI： |
| KeyWords:Pulsed high power microwave Finite difference time domain Specific absorption rate |
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| Abstract:: |
| Objective To investigate the SAR distribution in rats exposed to pulsed high power microwave irradiation. Methods Based on established pulsed EM fields and a numerical rat model, the distribution of the induced electric field in rats was calculated using FDTD method to get SAR distribution. Results The peak SAR and averaged SAR were calculated in different irradiation conditions,and SAR1,SAR10 and WBA-SAR were also calculated. Conclusion Peak SARs change little for different pulse width under same irradiation conditions.In one irradiation,the SAR descreases in turn for SAR1 peak,SAR10 peak and WBA-SAR.For pulsed high power microwave irradiation,there is a local “hotspot”.Under the same farfield irradiation,the smaller the rat is, the larger the WBASAR would be. |
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