Suggest Treatment For Calcification In Brain

In April of last year, I had a CT Scan which they said was abnormal; showed calcifications in my brain. I have had vertigo for several months now, but it has been aleviated with the use of the generic form of Antivert (Mclezine). I returned to my neurologist who wants me to have an CT scan of the brain this week. I cannot have an MRI done because I have a Medtronics Spinal Cord Stimulator implanted. . .My questions is if this CT scan shows further calcifications, what is the next step?. My neurologist stated that if there are no changes, and no further symptoms, she will want to see me again in six month.