Doctor Suggested an Ultrasound to Rule Out Carotid Artery Disease

I've had this pulsatile tinnutis in my right ear since 2007. Been to 2 different ENTS and had an MRI done. Nothing was found out of the ordinary except some hearing loss in 2011. I have read countless articles on it but haven't found a source or cure for it yet.
I have noticed that after taking a shower it quiets right down and I feel almost normal again until waking when it starts all over again. Its loudest when I wake and later on in evening. Confused......you bet !!
My Dr. suggested an ultrasound on my neck arteries to rule out carotid artery disease........does anyone know/or has had this done????

 

Yes I guess it started suddenly by my hearing pulsating sounds in my right ear. I matched it to my heartbeats thats why I know its pulsatile. My first test was done in 2007 and my hearing then was 100% in that ear. The ENT suggested I get an MRI to rule out a tumor, although he even said he didn't think I had one because of no headaches. Everything looked good he said except I had a crooked right septum. Last year I went again to a different ENT only this time there was a small amout of hearing loss but not bad. No help from either ENTS. I had to cancel my carotid ultrasound because I am on medicare and they don't pay 100%. Its quite an expensive test here (well over $ 1000) and I can't afford my copay at this time. My own Dr. has checked my ears for wax build up and brutes in my arteries and everything looks good to him. I think I've learned to live with it since no one can find a cure for it but it sure is annoying.........isn't it???
Thanks so much for writing.