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Flexible Intravascular EIS Sensors for Detecting Metabolically Active Plaque

  • Yuan Luo
  • Rene Packard
  • Parinaz Abiri
  • Y. C. Tai
  • Tzung K. HsiaiEmail author
Chapter
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Abstract

This chapter presents a comprehensive discussion on the recent development of utilizing electrochemical impedance spectroscopy (EIS) in atherosclerosis diagnosis. We first outline the general characteristics of atherosclerosis and the need for novel intravascular detection technology. The underlying principal of EIS is then reviewed from physical modeling and equivalent circuit perspectives. The focus of this chapter is the implementation of various EIS devices. We compare the typical 4-point electrode with the more compact 2-point configuration. The concentric bipolar electrode design has been discussed from the early in vitro sample testing to the subsequent device implementation based on stretchable materials. We then move to the most recent 2-point symmetric electrode design, based on which a fascinating 6-point 3-D EIS scheme has been developed. We discuss the live animal study being conducted to demonstrate the performance of such EIS design. Finally, this chapter concludes with our vision on future direction of improving the EIS technology, as well as advancing toward clinical adaptation.

Keywords

Electrochemical impedance spectroscopy Atherosclerosis Intravascular detection Flexible electronics; Lipid-rich plaque 

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Copyright information

© Springer Nature Switzerland AG 2020

Authors and Affiliations

  • Yuan Luo
    • 1
  • Rene Packard
    • 2
  • Parinaz Abiri
    • 2
  • Y. C. Tai
    • 1
  • Tzung K. Hsiai
    • 1
    • 2
    Email author
  1. 1.Medical Engineering, California Institute of TechnologyPasadenaUSA
  2. 2.Department of BioengineeringUniversity of California, Los AngelesLos AngelesUSA

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