Movement Tracking and False Positive Reduction Method for Microwave Colonoscopy Systems

This paper presents a novel computational method for addressing the challenge of uncontrolled antenna movement in microwave imaging systems for colonoscopy. The proposed method tracks the movement of the antenna array by analyzing phase shifts in S-parameters across multiple channels. By exploiting...

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Bibliographic Details
Published in:IEEE journal of electromagnetics, RF and microwaves in medicine and biology RF and microwaves in medicine and biology, 2024-10, p.1-7
Main Authors: Garrido-Atienza, Alejandra, Guardiola, Marta, Neira, Luz Maria, Romeu, Jordi, Fhager, Andreas
Format: Article
Language:English
Subjects:
Antenna arrays
Antenna measurements
Colon
Colorectal cancer
false positive reduction
Microwave antenna arrays
Microwave imaging
Microwave measurement
Microwave theory and techniques
movement compensation
phantom measurements
Phantoms
Probes
Tracking
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Summary:This paper presents a novel computational method for addressing the challenge of uncontrolled antenna movement in microwave imaging systems for colonoscopy. The proposed method tracks the movement of the antenna array by analyzing phase shifts in S-parameters across multiple channels. By exploiting the symmetry of the probe and correlating phase changes with displacement, this technique reduces false positives due to probe movements artifacts in real-time. Simulated and experimental results in a colon phantom model show that this method can correct displacements of up to 6 mm, reducing the artifacts in reconstructed images notably.
ISSN:2469-7249
2469-7257
DOI:10.1109/JERM.2024.3476964