I have posted this message onto your answered question, but just to let you know ... I had 2 brain aneurysm's operated on in 2003 and now have them clipped, I have been told by my doctor and neurology that under no circumstances am I to have an MRI scan done because of the magnetic properties of the MRI scan itself and the clips, this has been logged on my medical records and in to the local hospital registers. Information and answers to questions like ours have been answered different all over the place - this has happened to me on so many different occasions, but, I would advise you to contact the Neuro surgeon (their dept) and clarify with them first before you have the scan, I hope not to be to forthright here but I have had a family member where things went terribly wrong for them through a procedure 'post-op'. Best wishes to you for your future and hope your life gets back to normal for you.
Titanium clip are specially designed for the MRI scanning because it does not has magnetic properties. It is not only safe for angiography in MRI but also improve the image quality. It also does not give any artifacts.
All depends on what the clip is made of. You should have an ID card for the clip that states the maker and model number. That information can be given to the MRI dept, so they can look up the clip on mrisafety.com