Design and realisation of a microwave three-dimensional imaging system with application to breast-cancer detection
Design and realisation of a microwave three-dimensional imaging system with application to breast-cancer detection
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DOI：
10.1049/iet-map.2010.0106
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发表时间：
2010-12-01
影响因子：
1.7
通讯作者：
Meincke, P.
中科院分区：
文献类型：
--
作者：
Zhurbenko, V.;Rubaek, T.;Meincke, P.
描述了一种基于专用硬件的用于乳腺癌无创检测的主动微波成像系统。 32 个收发通道用于使用电子扫描测量三维 (3D) 成像域中散射场的幅度和相位。然后解决 3D 逆电磁散射问题，以重建成像域中复介电常数的分布。专用硬件基于阵列架构，可在保持高灵敏度的同时缩短采集时间，这对于测量精度和再现性以及患者舒适度非常重要。专用硬件在 97 dB 增益下实现了 2.3 dB 的接收器噪声系数。工作频率范围为 0.3 至 3 GHz。一个频率的图像采集时间约为 50 秒，使用单频重建算法在 2 小时内创建图像。通过对一系列测量的幅度和相位的标准偏差的分析以及简单的图像重建示例来说明系统的性能。
An active microwave-imaging system for non-invasive detection of breast cancer based on dedicated hardware is described. Thirty-two transceiving channels are used to measure the amplitude and phase of the scattered fields in the three-dimensional (3D) imaging domain using electronic scanning. The 3D inverse electromagnetic scattering problem is then solved in order to reconstruct the distribution of the complex permittivity in the imaging domain. The dedicated hardware is based on an array architecture allowing for a short acquisition time while maintaining a high sensitivity, which is important for measurement accuracy and reproducibility as well as for patient comfort. The dedicated hardware achieves a receiver noise figure of 2.3 dB at a gain of 97 dB. The operating frequency range is from 0.3 to 3 GHz. The image acquisition time at one frequency is approximately 50 s and an image is created within 2 h using the single-frequency reconstruction algorithm. The performance of the system is illustrated by an analysis of the standard deviations in amplitude and phase of a series of measurements as well as by a simple image reconstruction example.