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Design and Experimental Validation of a Multiple-Frequency Microwave Tomography System Employing the DBIM-TwIST Algorithm

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Syed Ahsan, Ziwen Guo, Zhenzhuang Miao, Ioannis Sotiriou, Maria Koutsoupidou, Efthymios Kallos, George Palikaras, Panagiotis Kosmas

Original languageEnglish
Article number3491
JournalSensors (Switzerland)
Issue number10
Publication statusPublished - 16 Oct 2018


King's Authors


We present a first prototype of a wideband microwave tomography system with potential application to medical imaging. The system relies on a compact and robust printed monopole antenna which can operate in the 1.0–3.0 GHz range when fully immersed in commonly used coupling liquids, such as glycerine–water solutions. By simulating the proposed imaging setup in CST Microwave Studio, we study the signal transmission levels and array sensitivity for different target and coupling liquid media. We then present the experimental prototype design and data acquisition process, and show good agreement between experimentally measured data and results from the CST simulations. We assess imaging performance by applying our previously proposed two-dimensional (2-D) DBIM TwIST-algorithm to both simulated and experimental datasets, and demonstrate that the system can reconstruct simple cylindrical targets at multiple frequencies.

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