Settle on data sets to show differences between scanners

[davecash75]

Options:

1. Prisma upgrade data from UCL - need to find post-upgrade scans
2. Cardiff travelling head scans - data sharing agreement needed
3. GENFI - ask Martina for example

[davecash75]

Cardiff is stuck in contract agreement. GENFI is there but not convincing. Will look at upgrade data if available and other GENFI cases.

[davecash75]

Will continue to update.