Analysis of the radial and ulnar arteries using ultrasound and a vascular visualization device in children.

Background: Radial artery is the preferred site for cannulation. Recently, the ulnar artery was chosen as an alternative in adults.

Aims: We aimed to measure the diameter and depth of the ulnar and radial arteries using ultrasound, and our secondary purpose was to evaluate their anatomical position using a near-infrared transcutaneous illumination device.