What is Carotid Artery Disease? Dr. Dawn Olsen Vascular Surgeon and Kailin George physician liaison discuss the signs, symptoms, causes, & treatments of carotid artery disease. Additionally, as seen below are some photos taken from a recent TCAR or Trans Carotid Artery Revascularization procedure performed by Dr. Dawn Olsen on a patient in the hospital. It can be clearly recognized where the carotid artery had become nearly occluded prior to the procedure and post-procedure including stenting the artery had become nice and open allowing for optimal blood flow to the brain. Also of note is the photo where plaque filtered out through the TCAR device can be seen in abundance.