[ibejoeb]

It doesn't provide example data, but there's still a spot in the standard for it. The values can differ by modality or manufacturer. Sure, it's not required, but certainly it's very important in some situations. Consider dermoscopy.

If interested, searching for "dicom conformance" should yield lots of docs that probably contain specific values for those things.

[ska]

FWIW, the standard printed out is multiple linear feet of shelf space. There is a spot for a lot of things.

One common issue is a lot of these kinds of tags rely on optional human input and are inconsistently applied. As opposed to say, modality specific parameters produced by a machine, which are consistent.

DICOM is a great example of design by committee, with the +'ve and -'ves that implies.