Private Elements (or Tags) are perfectly legal in DICOM, details of the structure of Private DICOM Elements can be found in DICOM Private Elements.

Removing all Private elements from any DICOM instance is quite simple, following sample code shows you how to do it in DicomObjects.


 DicomDataSet ds = new DicomDataSet(filename);
 // true to remove all private attributes irrespective of where they are. 
 // false (default) to only remove top level private attributes


 Dim At As DicomAttribute
 Dim Index As Integer
 For Index = Image.Attributes.Count To 1 Step -1
 Set At = Image.Attributes.ItemByIndex(Index)        
	If At.Group Mod 2 > 0 Then	  
	  Image.Attributes.Remove At.Group, At.Element ' if odd group number, remove it
	End If