Best Bilateral Antegrade Vertebral Artery Flow - 3 Secrets You Never Knew About. The way things are meant to work is… 1. The vertebral artery provides 20% of blood flow to your brain (the carotid artery supplies the other 80%).
The normal range for net vertebral artery flow volume defined by the 5th to 95th percentiles is between 102.4 and 301.0 ml/min. Postoperatively a new directional doppler ultrasound examination then showed bilateral normal (= antegrade) vertebral artery blood flow. Postoperatively a new directional doppler ultrasound examination then showed bilateral normal (= antegrade) vertebral artery blood flow.