ADI-FDTD方法在乳腺癌检测正向计算中的应用

发布时间：2018-03-15 04:12

本文选题：交替隐式时域有限差分法　切入点：微波断层成像　出处：《电波科学学报》2016年05期 　论文类型：期刊论文

【摘要】：传统的时域有限差分(Finite-Difference Time-Domain,FDTD)算法受到稳定性条件的制约,时间步长受限于空间网格的尺寸.医学应用讲究即时性,为提高成像的速度,文中采用无条件稳定的交替隐式时域有限差分(Alternating-Direction Implicit Finite-Difference Time-Domain,ADI-FDTD)算法替代传统的FDTD算法进行正向计算,通过实验得出采用ADI-FDTD算法在保证精度的前提下,计算时间可缩短为FDTD算法的四分之一,为乳腺癌微波即时成像提供了可能.
[Abstract]:The traditional Finite-Difference Time-Domain FDTDalgorithm is restricted by the stability condition, and the time step is limited by the size of the space grid. In this paper, the alternative implicit implicit finite-difference time-domain Implicit Implicit Finite-Difference time-domain FDTD algorithm, which is unconditionally stable, is used instead of the traditional FDTD algorithm to carry out the forward calculation. The experimental results show that the ADI-FDTD algorithm is used to ensure the accuracy of the algorithm. The computing time can be shortened to 1/4 of that of FDTD algorithm, which provides the possibility for microwave instant imaging of breast cancer.
【作者单位】：南京邮电大学电子科学与工程学院;空军航空大学;
【分类号】：R737.9;TN015

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