Prominent slice gap warning on Vida data

[Lestropie]

I am regularly getting a slice gap warning for enhanced DICOM data coming from our Vida scanner. Very small, so possibly only just supra-threshold, but nevertheless annoying to see for data for which no such problem should exist. At some point I need to look closely at these data and see whether it's a problem of genuine imprecision in the header information (which one would not expect from a newer scanner), our tolerance being too small, or something else.