Association between the posterior part of the circle of Willis and the vertebral artery hypoplasia.

ABSTRACT:

Background

It is not clear whether the configuration of the posterior part of the circle of Willis (CW) depends on the proximal part of the vertebrobasilar system. Our aim is to evaluate the posterior part of CW in association with different size of vertebral arteries (VA) in healthy volunteers.

Materials and methods

The present study was based on a sample of 923 healthy volunteers who were examined from 2013 through 2018. The duplex ultrasonographic examination of the extracranial vertebral (VA) and carotid arteries was performed. VA was defined as hypoplastic (VAH) when VA diameter in the entire course was less than 2.5 mm. All the participants underwent magnetic resonance angiography (MRA) examination. All the component vessels of the circle of Willis were assessed in eac

SUBMITTER: Gaigalaite V 

PROVIDER: S-EPMC6742380 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature