Employment of Colour Flow Doppler to Identify the Tip of the Needle During Ultrasound Guided Nerve Blocks

Abstract

Identifying the needle tip during ultrasound guided procedures such as nerve blocks or vascular access can be a problem. “Visualising the needle tip on ultrasound requires that it be aligned with the ultrasound beam; however even when alignment is achieved, the physical characteristics of the needle and the limitations of ul-trasound technology may hinder visibility”.