Zhang Zhong Qing, Liu Qing Huo, Xiao Chunjiang, Ward Erika, Ybarra Gary, Joines William T
Department of Electrical and Computer Engineering, Duke University, Durham, NC 27708-0291, USA.
IEEE Trans Biomed Eng. 2003 Oct;50(10):1180-9. doi: 10.1109/TBME.2003.817634.
Active microwave imaging (MWI) is emerging as a promising technique for the detection of biomedical anomalies such as breast cancer because of the high electrical contrasts between malignant tumors and normal tissue. Previously, we have developed fast two-dimensional forward and inverse scattering algorithms for MWI systems. In this paper, we report the full three-dimensional (3-D) forward scattering simulation in order to account for 3-D effects and to provide a fast solver in future 3-D nonlinear inverse scattering methods. The 3-D fast forward method is based on the stabilized biconjugate-gradient fast Fourier transform (BCGS-FFT) algorithm. The method has been validated for various MWI measurement scenarios. Using this fast simulation method, we demonstrate the importance of accounting for 3-D effects in MWI, and we compare numerical results with the measurements from an experimental prototype.
有源微波成像（MWI）正成为一种很有前景的技术，用于检测诸如乳腺癌等生物医学异常情况，这是因为恶性肿瘤与正常组织之间存在高电对比度。此前，我们已为MWI系统开发了快速二维正散射和逆散射算法。在本文中，我们报告了全三维（3-D）正散射模拟，以便考虑三维效应，并为未来的三维非线性逆散射方法提供一个快速求解器。三维快速正演方法基于稳定双共轭梯度快速傅里叶变换（BCGS-FFT）算法。该方法已在各种MWI测量场景中得到验证。使用这种快速模拟方法，我们证明了在MWI中考虑三维效应的重要性，并将数值结果与来自实验原型的测量结果进行了比较。
