A COTS-Based Microwave Imaging System for Breast-Cancer Detection
A COTS-Based Microwave Imaging System for Breast-Cancer Detection
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DOI：
10.1109/tbcas.2017.2703588
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发表时间：
2017-08-01
影响因子：
5.1
通讯作者：
Vipiana, Francesca
中科院分区：
文献类型：
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作者：
Casu, Mario R.;Vacca, Marco;Vipiana, Francesca
微波成像是一种新兴的乳腺癌诊断技术，其目的是补充已经建立的方法，如乳房X线摄影，磁共振成像和超声。它提供了两个显著的优势：对患者没有风险，对国家卫生系统可能成本低。然而，到目前为止，为实验室和诊所验证而开发的原型使用昂贵的实验室仪器，如矢量网络分析仪（VNA）。此外，复杂图像重建算法所需的CPU时间可能与医学检查的持续时间不兼容。在本文中，这两个问题都得到了解决。事实上，我们提出了一个原型系统的基础上，低成本和现成的微波组件，定制的天线，和一个小的形状因子处理系统与嵌入式现场可编程门阵列加速执行的成像算法。我们证明，我们的低成本系统在精度方面可以与昂贵的VNA竞争，并且在图像重建方面比高性能服务器快20倍以上。
Microwave imaging is an emerging breast cancer diagnostic technique, which aims at complementing already established methods like mammography, magnetic resonance imaging, and ultrasound. It offers two striking advantages: no-risk for the patient and potential low-cost for national health systems. So far, however, the prototypes developed for validation in labs and clinics used costly lab instruments such as a vector network analyzer (VNA). Moreover, the CPU time required by complex image reconstruction algorithms may not be compatible with the duration of a medical examination. In this paper, both these issues are tackled. Indeed, we present a prototype system based on low-cost and off-the-shelf microwave components, custom-made antennas, and a small form-factor processing system with an embedded field-programmable gate array for accelerating the execution of the imaging algorithm. We show that our low-cost system can compete with an expensive VNA in terms of accuracy, and it is more than 20x faster than a high-performance server at image reconstruction.