I had an MRI done last and showed a 2mm outpouching aneurysm but then I also had a CT scan with contrast and that dye which came back normal. I went in to the ER for numbness on my left hand and right cheek, with headaches. Stayed for 3days but was discharged stating everything was normal and that I may just have migraines. I still worried because I get a headache that comes and goes on the right side above my eye. Should I still be concerned. I mean which test is more accurate??