Following my surgery and radiation in 2006, my brilliant but cautious neurosurgeon has kept me on a schedule of semi-annual MRI scans. After my next MRI (in June) I'll move to having an MRI on an annual basis for five years. Then, I'll likely have an MRI every two years, possibly five. I don't expect to ever just stop having MRI scans anytime in the near future. They're painless, (I'm not claustrophobic) don't involve radiation and can spot a re-growth early, which is, unfortunately, a small but still-valid possibility AN patients have to live with if they're going to be realistic. I'm another AN patient that doesn't lose any sleep worrying about a re-growth (especially since I've seen signs of AN necrosis on my MRI scans). Still, I prefer to be realistic and that means having MRI scans on some sort of schedule, even if that becomes twice per decade. It's worth it to me for 'peace of mind'.
Jim