Ladies. This is Worrying.

[KnottedYet]

Cause vs. effect.

could be that folks who get MRIs get 'em because something seems not right, like the doc thinks they have cancer.

Later, as things develop, perhaps the cancer becomes more obvious and is diagnosed.

Or perhaps folks who've had one MRI due to worrisome symptoms are more likely to be given another later for suspicious symptoms, so their cancer is caught earlier, rather than growing until the mass can be seen with the naked eye or felt by hand.

I had cancer. Weird symptoms since then are first suspected to be cancer recurring. CTs and MRIs ruled out cancer for me for the new symptoms (guts, brain), and I am ever so grateful for them. But when/if my cancer comes back the docs are more likely to have ordered scans just because of my history.

You can prove anything with statistics.

(PS. I was under the impression that MRI's don't use radiation. They use magnets to align the atoms in yer body and use that info to get the picture)