// Group Number  
// NHI Abbreviation (when known) - not part of DICOM standard -
// Meaning          (when known) - not part of DICOM standard -

0000 CMD Command
0002 META Meta Elements
0004 DIR Directory
0008 ID Identification Informations
0010 PAT Patient Informations
0012 CLI Clinical Trial Informations
0018 ACQ Acquisition Informations
0020 REL Relationship Informations
0022 ??? ???
0028 IMG Image Informations
0032 SDY Study Informations
0038 VIS Visit Information
003a WAV Waveform Information
0040 PRC Procedure Informations
0050 DEV Device Informations
0054 NMI Nuclear Medicine
0060 HIS Histogram
0070 ??? ???
0088 MED Medicine
0100 ??? ???
0400 ??? ???
2000 BFS ???
2010 BFB ???
2020 BIB ???
2030 BAB ???
2040 IOB ???
2050 ??? ???
2100 PJ ???
2110 PRINTER Printer
2130 ??? ???
2200 ??? ???
3002 RT Radiotherapy
3004 DVH ???
3006 SSET ???
3008 ??? ???
300a RT Radiotherapy
300c RT Radiotherapy
300e RT Radiotherapy
4008 RES Results
4ffe ??? ???
5000 CRV Curve
5002 CRV Curve
5004 CRV Curve
5006 CRV Curve
5008 CRV Curve
500a CRV Curve
500c CRV Curve
500e CRV Curve
5200 ??? ???
5400 ??? ???
5600 ??? ???
6000 OLY Overlays
6002 OLY Overlays
6004 OLY Overlays
6008 OLY Overlays
600a OLY Overlays
600c OLY Overlays
600e OLY Overlays
7fe0 PXL Pixels