I asked my radiologist about narrowing of the coratid artery and she suggested that my PCP keep an eye on it. My risk was low due to having IMRT. My PCP listened to the artery and thought I was fine. When I brought it up to my ENT, he said he generally recommends a baseline ultrasound. I'm Not sure why one was never suggested to me. The baseline showed both arteries was fine. This was about 2 months ago and I'm three years past treatment this month. I think he said he'd do another ultrasound in five years.

On another note...The ultrasound showed something amiss with my thyroid and I needed to return for a thyroid scan. Turns out I have some nodules, which came back benign after a fine needle aspiration was performed. The thyroid doctor will just watch the nodules over the next few years to see if they change. Only downside is I added another doctor to my list!