Study on microwave imaging for the early breast cancer detection by FDTD with PML boundary condition
Study on microwave imaging for the early breast cancer detection by FDTD with PML boundary condition
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DOI：
10.1109/fbie.2009.5405920
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发表时间：
2009-12
期刊：
影响因子：
--
通讯作者：
X. Xiao;Xu Liu;Bingyu Liu
中科院分区：
文献类型：
--
作者：
X. Xiao;Xu Liu;Bingyu Liu
超宽带（UWB）微波成像是一种非常有前途的早期乳腺癌物理检测方法，其基础是恶性肿瘤和正常乳腺组织之间的电磁参数差异很大。在这项研究中，在一个二维乳腺模型的乳腺生物体的色散特性的肿瘤检测进行了数值的时域有限差分法（FDTD）。计算中采用了完全匹配层吸收边界条件。研究了皮肤、乳腺和胸壁对超宽带乳腺癌检测的影响。对位于腺体后方的假定6 mm早期肿瘤进行检测。重建图像表明，通过适当的信号处理，可以正确和清晰地检测到肿瘤。
Ultra-wideband (UWB) microwave imaging is a very promising method for the early breast cancer detection physically based on the large contrast of electromagnetic parameters between the malignant tumor and the normal breast tissues. In this study, the tumor detection in a two dimensional breast model with dispersive characteristic properties of the breast organisms is carried out numerically by the finite difference time domain method (FDTD). The Perfect matched layer absorption boundary condition (PML ABC) is adopted in the computation. The influences from the skin, breast gland and the chest wall to the breast cancer detection by UWB imaging are investigated. The detection for an assumed 6 mm early stage tumor which located behind the gland is performed. The reconstructed image shows that the tumor could be detected correctly and clearly through the appropriate signal processes.