OK, it looks like you haven't done your own research or you don't want to do it. Here is a documented case of MRI causing hearing loss. If it doesn't convince you, I will find you more documented cases. There is no doubt that MRI can cause hearing loss. But if you don't want to believe it, that's a different story. Also, keep in mind that it's not necessary for any cochlear damage to manifest immediately with symptoms. You may have damage done but your ears may not start ringing immediately or a hearing test may not detect it straight away.
Coming out from an MRI exam with no tinnitus doesn't mean you are all good.
Sensorineural Hearing Loss after Magnetic Resonance Imaging
What I meant is that the noise by itself is not the culprit, but I think that something else is going on.
Every person with or without tinnitus needs to be informed before they undergo an MRI exam that the procedure is loud and can cause hearing damage.
And every person with tinnitus, if it's not life threatening condition, should be advised for alternatives.
That's good that you are radiographer. And you have an idea on how the MRI works.
But what's interesting is how they didn't tell you that the MRIs are loud and can cause hearing loss. Now if that's true, it is alarming. It shows how little attention and complete ignorance is paid to hearing disorders.