Electrical impedance of an ultrasonic needle device as an indicator of interstitial needle tip position

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Abstract

Ultrasound-guided percutaneous needle procedures, commonly employed in regional anaesthesia and tissue biopsy, face challenges in accurately localizing the needle tip. This study explores the potential of using real-time electrical impedance measurements from an ultrasonic needle device as an indicator of the needle tip location, with reference to insertion force. The device utilizes a Langevin piezoelectric ultrasound transducer to actuate a general anaesthesia needle, while an adaptive control system provides impedance measurements in real time. Gelatin phantoms with varying concentrations, a skin-mimicking layer made of silicone, and a medical plastic gloves layer were used to create single- and multi-layer testing objects. The results suggest that the impedance magnitude is comparable to the force in identifying key events during needle insertions, such as puncturing and layer transitions. Furthermore, impedance proves particularly reliable when the needle is stationary, indicating a strong potential as a valuable feedback signal for enhancing percutaneous needle procedures.

Original languageEnglish
Title of host publicationIUS 2023 - IEEE International Ultrasonics Symposium, Proceedings
PublisherIEEE
Number of pages3
ISBN (Electronic)9798350346459
DOIs
Publication statusPublished - 7 Nov 2023
Event2023 IEEE International Ultrasonics Symposium, IUS 2023 - Montreal, Canada
Duration: 3 Sept 20238 Sept 2023

Publication series

NameIEEE International Ultrasonics Symposium, IUS
ISSN (Print)1948-5719
ISSN (Electronic)1948-5727

Conference

Conference2023 IEEE International Ultrasonics Symposium, IUS 2023
Country/TerritoryCanada
CityMontreal
Period3/09/238/09/23

Keywords

  • Electrical impedance
  • Needle localization
  • Piezoelectric transducer
  • Ultrasonic needle

ASJC Scopus subject areas

  • Acoustics and Ultrasonics

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