It is actually fairly easy to read this data into Slicer via the RawImageGuess. The vif file provides image dimension (512^3), data type appears to be 16 bit unsigned. There is some kind of byte offset (480) seemed to work for me.
If the vif file contained explicitly those values (data type, offset and spacing), we could implement an imported module like we have for GE scanners in SlicerMorph: SlicerMorph/GEVolImport/GEVolImport.py at master · SlicerMorph/SlicerMorph · GitHub
