So, Dr. Duchin and I were/are having a good conversation about #CoVidIsAirborne, and what was necessary as far as to move this forward. @kprather88 had retweeted it, and so was reading the conversation.
Dear Health Provider - the @readimask worn by the person who showed you that QR code (or this tweet) has no metal parts in it, and can safely be worn during an MRI.