论文标题
在电磁暴露下，评估非平面体模型的吸收功率密度和温度升高，高于6 GHz
Assessment of absorbed power density and temperature rise for nonplanar body model under electromagnetic exposure above 6 GHz
论文作者
论文摘要
计算了具有非平面表面的人体模型的平均吸收功率密度（APD）和温度升高，以用于6 GHz以上的电磁暴露。研究了平均APD的不同计算方案。此外，提出并验证了一种新型的补偿方法，用于纠正体素界面上的空气/皮肤界面上的热对流率。与先前提出的方法相比，补偿方法可以轻松地纳入生物学计算中，并且不需要有关边界体素的正常方向的信息。使用二维圆柱体和三维部分前臂的模型评估APD和温度升高。使用不同的APD平均方案计算，加热因子被定义为温度升高与APD的比率。我们的计算结果揭示了不同的频率和曲率依赖性。对于曲率半径> 30 mm且在> 20 GHz的频率的体型模型，APD方案之间的加热因子的差异很小。
The averaged absorbed power density (APD) and temperature rise in body models with nonplanar surfaces were computed for electromagnetic exposure above 6 GHz. Different calculation schemes for the averaged APD were investigated. Additionally, a novel compensation method for correcting the heat convection rate on the air/skin interface in voxel human models was proposed and validated. The compensation method can be easily incorporated into bioheat calculations and does not require information regarding the normal direction of the boundary voxels, in contrast to a previously proposed method. The APD and temperature rise were evaluated using models of a two-dimensional cylinder and a three-dimensional partial forearm. The heating factor, which was defined as the ratio of the temperature rise to the APD, was calculated using different APD averaging schemes. Our computational results revealed different frequency and curvature dependences. For body models with curvature radii of >30 mm and at frequencies of >20 GHz, the differences in the heating factors among the APD schemes were small.
