+
+ /// \brief returns the distance between the 2 first -adjacent- slices,
+ /// along the slice normal; -1.0 if process failed
+ /// Computed during ImagePositionPatientOrdering() process.
+ /// To be use *immediately after* ImagePositionPatientOrdering()
+ /// (it's a member of the FileHelper, *not* of the FileList !)
+ double GetZSpacing() { return ZSpacing; }
+