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

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publication2020 Asia-Pacific Microwave Conference, APMC 2020 - Proceeding
EditorsJie Sun, Wai Ho Yu
Pages974-976
Number of pages3
ISBN (Electronic)9781728169620
DOIs
Publication statusPublished - 8 Dec 2020
Externally publishedYes
Event2020 Asia-Pacific Microwave Conference, APMC 2020 - Virtual, Hong Kong, Hong Kong
Duration: 8 Dec 202011 Dec 2020

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC
Volume2020-December
ISSN (Electronic)2690-3946

Conference

Conference2020 Asia-Pacific Microwave Conference, APMC 2020
Country/TerritoryHong Kong
CityVirtual, Hong Kong
Period8/12/2011/12/20

Keywords

  • Antenna
  • Applicators
  • NIRS
  • SAR

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