MRI are generaly considered safe but my personnal experience contradict this. I passed a 3T brain MRI (with gadolinium injection for angiography) ~80 days ago and my life has been seriously painful since then. I have experienced hypertension (often >170 of systole, seem unrelated but never had high tension of my life and like the rest of theses issues it appeared exactly after the MRI), sleep issues, head difficulties to think and head "rigidity", sexual/erectile disfunction (other side-effets started to dim a bit since then, but not this one), continuous heat on of my face up to 3 weeks after the exam. I am not trying to spread FUD but this has unfortunately been my experience. I'm a fragile kind of person, though I didn't expected it would be (so) unsettling. YMMV but you may reconsider passing one if you don't have confidence it would help you diagnosis or find issues (stenosis, neoplasm...).