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Related Experiment Video

Updated: Nov 22, 2025

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver
04:33

Three-Dimensional Ultrasonic Needle Tip Tracking with a Fiber-Optic Ultrasound Receiver

Published on: August 21, 2018

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Novel approaches to needle tracking and visualisation.

G A McLeod1,2,3

  • 1Ninewells Hospital, Dundee, UK.

Anaesthesia
|January 11, 2021
PubMed
Summary
This summary is machine-generated.

Ultrasound limitations in nerve blocks necessitate new needle tip tracking technologies. Innovations using bio-markers and advanced imaging promise to enhance precision and patient safety in nerve blocks.

Keywords:
needlenerve blocksimulationtechnologyultrasonography

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Area of Science:

  • Medical Devices
  • Anesthesiology
  • Biomedical Engineering

Background:

  • Ultrasound guidance for nerve blocks has limitations in accuracy and reliability.
  • Precise needle tip placement near, but not within, the nerve epineurium is crucial for safe and effective nerve blocks.
  • Ultrasound's insufficient resolution and visualization challenges hinder accurate needle tip evaluation.

Purpose of the Study:

  • To review emerging technologies for improving needle tip localization during nerve blocks.
  • To highlight innovations addressing the limitations of current ultrasound guidance.

Main Methods:

  • Exploration of bio-marker technologies utilizing physical tissue properties (pressure, electrical, optical, acoustic, elastic).
  • Review of novel needle tip tracking systems including optical fibers, electrical impedance, piezo elements, and micro-ultrasound.

Main Results:

  • Laboratory and phantom studies show promise for various bio-marker technologies.
  • Early development of micro-ultrasound at the needle tip demonstrates high-resolution imaging of nerve fascicles.
  • New tip tracker needles with integrated piezo elements offer real-time in-plane and out-of-plane tracking.

Conclusions:

  • Technological advancements in needle tip tracking are poised to revolutionize nerve block procedures.
  • These innovations have the potential to significantly improve patient safety and alter clinical practice.