A lesson to us all
> although the scan is still on file ... it is stored in a format that can no longer be read by the hospital's computers.
A backup (or archive) is only a backup if you can restore it. Just copying stuff to some other location/format is pointless until you've verified you can read it back.
Although the hospital says they can read the file (given access to the right kit), they can't be sure it hasn't been corrupted. So until they try to access the scan there's no guarantee the scan still actually exists - just that the physical medium on which it's stored is present.
You'd hope that if the NHS does go to the effort of acquiring hardware to read this scan, they'll take the opportunity of transferring all their other MOD media onto something a little more modern, rather than just doing a one-off and shipping the reader back from whence it came. Presumably there are lots of other NHS shops in the same situation, so with even the slightest use of initiative, the cost of this activity could be shared. I hold out very little hope ...