BUG: Fix special character display in DICOM metadata viewer
BUG: Fix special character display in DICOM metadata viewer

ctkDICOMObjectModel displayed the raw data buffer. Now we use ctkDICOMItem::Decode to convert raw data to UTF-8.

SINTEFMedtek/CTK,SINTEFMedtek/CTK,commontk/CTK,SINTEFMedtek/CTK,commontk/CTK,SINTEFMedtek/CTK,SINTEFMedtek/CTK,commontk/CTK,commontk/CTK