Ultra-wide band microwave image reconstruction for early breast cancer detection by norm constrained capon beamforming

Ultra-wide band microwave image reconstruction for early breast cancer detection by norm constrained capon beamforming
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通过范数约束 Capon 波束形成进行早期乳腺癌检测的超宽带微波图像重建

DOI:
10.1016/j.mcm.2012.11.016
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发表时间:
2013-07
影响因子:
--
通讯作者:
Kikkawa Takamaro
Kikkawa Takamaro
中科院分区:
--
文献类型:
--
作者:
Xu Li;Xiao Xia;Kikkawa Takamaro

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本文提出了一种用于超宽带微波成像系统乳腺癌检测的高效、鲁棒的图像重建算法。为了测试这种方法的有效性,一个三维模型的乳腺生物体进行数值计算的FDTD方法。在计算机系统中建立了PML吸收边界条件。采用范数约束Capon波束形成(NCCB)算法来生成用于图像重建的加权向量。在重建图像中成功检测到直径为3 mm的肿瘤,证明了波束形成算法的鲁棒性。本研究验证了利用NCCB成像算法检测乳腺小肿瘤的可行性。
In this paper, an efficient and robust image reconstruction algorithm for breast cancer detection by ultra-wide band microwave imaging system is presented. To test the efficacy of this approach, a three-dimensional model of the breast organisms is numerically carried out by the FDTD method. The PML absorption boundary condition is developed in the computer system. The norm constrained capon beamforming (NCCB) algorithm is employed to create the weighting vector for the image reconstruction. The tumor with the size of 3 mm in diameter detected successfully in the reconstructed image demonstrates the robustness of the beamforming algorithm. The study verifies the feasibility of detecting the small breast tumors by using the NCCB imaging algorithm.
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