I have stainless steel sutures from a Shouldice Hospital hernia operation decades ago.
Read posts that any metal object can "burn" or even "move" during a 3T (3 Tesla) MRI.
Called my hospital and Shouldice. Both said, "not a problem" and "it won't burn".
Also, the hospital MRI tech said that the Foley catheter can stay in. (Same with ultrasound, from a phone call that I made yesterday.)
Your comments?