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A Hybrid Microwave-Optical Applicator for Local Muscle Warming and Monitoring

Al-Armaghany, A; Tong, KF; Leung, T; (2020) A Hybrid Microwave-Optical Applicator for Local Muscle Warming and Monitoring. In: Proceedings of the IEEE Asia-Pacific Microwave Conference (APMC) 2020. (pp. pp. 974-976). The Institute of Electrical and Electronics Engineers (IEEE) Green open access

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Abstract

Local warming of human tissue causes vasodilation and therefore blood volume to increase. Such thermal blood volume response allows the assessment of microcirculation in tissue, providing clinically important information. The deep warming is provided by a novel microwave applicator, which has a annular-ring microstrip patch operating at 2450 MHz with a superstrate interface layer to improve the coupling of electromagnetic (EM) waves into the skin. The design is based on computer simulations of specific absorption rate (SAR) and thermal distribution of the EM waves in a biological medium. The simulation results show that the applicator can elevate the muscle temperature by 3 to 4^{\circ}\mathrm{C}. The thermal response is measured by an integrated optical probe which measures tissue oxygenation changes in deep tissue using the near infrared spectroscopy technique.

Type: Proceedings paper
Title: A Hybrid Microwave-Optical Applicator for Local Muscle Warming and Monitoring
Event: IEEE Asia-Pacific Microwave Conference (APMC) 2020
ISBN-13: 978-1-7281-6962-0
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/APMC47863.2020.9331418
Publisher version: https://doi.org/10.1109/APMC47863.2020.9331418
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher's terms and conditions.
Keywords: Applicators, Antenna, SAR, NIRS
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Med Phys and Biomedical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/10123234
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