[vtkusers] VTK volume from slices with timestamp and cache

[Richard Whitehead]

I am doing a redesign for a piece of medical equipment and am considering basing it around VTK.  Please can anyone with expertise help as I have only played with VTK for a couple of weeks.
The machine takes slices of data one after another.  I am thinking I could store these in a VTK volume which can then be visualised.  But I have 2 issues:
- We need each slice to be time-stamped; would it be possible to use some sort of compound data structure that can see the slices as a volume but also attach information to each slice?  I’m thinking this might enable me to use VTK’s serialisation for example.
- Because of processing, filtering etc. there will be far too much data to keep in memory – dozens of large volumes.  Most volumes will only be visualised as slices in the original plane, one or two will be visualised in another plane or as 3D.  Is there a way to tell VTK to cache the volume in files and seamlessly load planes from disk as needed for display?
I am at the paper design stage so direction here would be very valuable.  All help much appreciated.
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