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

Area of Science:

• Electromagnetics and Applied Physics
• Biomedical Engineering
• Medical Imaging Technology

Background:

• Microwave tomography offers a non-ionizing imaging modality with potential for early disease detection.
• Developing robust and accurate microwave tomography systems requires advanced antenna design and signal processing techniques.

Purpose of the Study:

• To present a first prototype of a wideband microwave tomography system for potential medical imaging applications.
• To evaluate the system's performance using simulations and experimental data.
• To demonstrate the capability of reconstructing targets using a 2-D DBIM TwIST algorithm.

Main Methods:

• Design and simulation of a wideband microwave tomography system using CST Microwave Studio.
• Development of a compact printed monopole antenna operating in the 1.0–3.0 GHz range.
• Experimental data acquisition and application of a 2-D DBIM TwIST algorithm for image reconstruction.

Main Results:

• Good agreement was observed between simulated and experimental data.
• The system demonstrated successful reconstruction of simple cylindrical targets at multiple frequencies.
• Analysis of signal transmission levels and array sensitivity for various media was performed.

Conclusions:

• The developed wideband microwave tomography system shows promise for medical imaging.
• The combination of antenna design, simulation, and advanced algorithms is effective for target reconstruction.
• Further development could enhance the system's resolution and applicability to complex biological tissues.