Theoretical electric field distributions produced by three types of regional hyperthermia devices in a three-dimensional homogeneous model of man.
Theoretical electric field distributions produced by three types of regional hyperthermia devices in a three-dimensional homogeneous model of man.
复制标题
人体三维均匀模型中三种类型的区域热疗装置产生的理论电场分布。
DOI：
10.1109/10.1334
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
Lynch,DR
中科院分区：
文献类型：
--
作者：
Paulsen,KD;Strohbehn,JW;Lynch,DR
本文用麦克斯韦方程的边界元法求解三维均匀人体模型的电场，边界元网格由人体的横截面切片构成，保持人体表面的轮廓，但不考虑人体内部的不均匀性。通过使用该方法结合一个均匀的三维模型，只有身体表面和源被离散化，因此，详细的三维建模所需的计算分辨率达到中等计算能力（MicroVax II）的约束内。模拟三种类型的区域非侵入性热疗系统的电磁源安排检查，即磁感应装置，环形阵列的应用，和电容加热系统。结果表明，由环形阵列和电容加热模型产生的电场的纵向范围可能是显着的，这表明可能需要对这些类型的设备进行三维模拟，以充分了解它们的能力。<>
A boundary-element formulation of the Maxwell equations is used to solve for the electric field in a three-dimensional homogeneous model of man. The boundary element grid is constructed from cross-sectional slices of the body in such a way that the contour of the body surface is preserved, but the interior heterogeneity is not taken into account. By using the method in conjunction with a homogeneous three-dimensional model, only the body surface and the source are discretized; hence, the computational resolution required for detailed three-dimensional modeling is reached within the constraints of moderate computing power (MicroVax II). Electromagnetic source arrangements simulating three types of regional noninvasive hyperthermia systems are examined, namely magnetic induction devices, annular array applications, and capacitive heating systems. Results indicate that the longitudinal extent of the electric fields produced by the annular array and capacitive heating models can be significant, suggesting that three-dimensional simulation of these types of devices may be required to fully understand their capabilities.<>