Improved Delay-and-Sum Beamforming Algorithm for Breast Cancer Detection
Improved Delay-and-Sum Beamforming Algorithm for Breast Cancer Detection
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DOI：
10.1155/2008/761402
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发表时间：
2008-01-01
影响因子：
1.5
通讯作者：
Benjamin, R.
中科院分区：
文献类型：
--
作者：
Klemm, M.;Craddock, I. J.;Benjamin, R.
我们已经评估了一种改进的延迟和总和（DAS）波束形成算法的乳腺癌检测与微波雷达为基础的系统。改进的DAS算法使用在每个焦点处计算的附加权重因子来提高图像质量。这些权重基本上代表预处理和相干雷达操作的质量。使用基于半球形天线阵列的多基地UWB雷达系统，我们提出了7毫米和10毫米的幻影肿瘤的实验检测。我们表明，新提出的DAS算法提高了信号杂波比聚焦图像2.65 dB的10毫米肿瘤，和4.4 dB的7毫米肿瘤。版权所有（C）2008 M. Klemm等人
We have evaluated a modified delay-and-sum (DAS) beamforming algorithm for breast cancer detection with a microwave radar-based system. The improved DAS algorithm uses an additional weight factor calculated at each focal point to improve image quality. These weights essentially represent the quality of preprocessing and coherent radar operation. Using a multistatic UWB radar system based on a hemispherical antenna array, we present experimental detection of 7 mm and 10 mm phantom tumours. We show that the new proposed DAS algorithm improves signal-to-clutter ratio in focused images by 2.65 dB for 10 mm tumour, and by 4.4 dB for 7 mm tumour. Copyright (C) 2008 M. Klemm et al.