H.3.3.1 Additional Keys

File Set Creators and Updaters are required to generate the mandatory elements specified in PS 3.3.

Table H.3-2 specifies the additional associated keys. At each directory record level other additional data elements can be added, but it is not required that File Set Readers be able to use them as keys. Refer to the Basic Directory IOD in PS 3.3.

Table H.3-2STD-GEN-DVD and STD-GEN-SEC-DVD Additional DICOMDIR Keys

Key Attribute Tag Directory Record Type Type Notes
Patient’s Birth Date (0010,0030) PATIENT 1C Required if present in any objects referenced by subordinate records with a non-zero length value.
Patient’s Sex (0010,0040) PATIENT 1C Required if present in any objects referenced by subordinate records with a non-zero length value.
Institution Name (0008,0080) SERIES 1C Required if present in any objects referenced by subordinate records with a non-zero length value.
Institution Address (0008,0081) SERIES 1C Required if present in any objects referenced by subordinate records with a non-zero length value.
Performing Physicians’ Name (0008,1050) SERIES 1C Required if present in any objects referenced by subordinate records with a non-zero length value.
Image Type (0008,0008) IMAGE 1C Required if present in image object.
Calibration Image (0050,0004) IMAGE 1C Required if present in image object with a non-zero length value.
Referenced Image Sequence (0008,1140) IMAGE or SPECTROSCOPY 1C Required if present in image object with one or more items, either in the top level dataset or nested within a functional group sequence of the Shared Functional Groups Sequence (5200,9229).
Lossy Image Compression Ratio (0028,2112) IMAGE 1C Required if present in image object with a non-zero length value.
Rows (0028,0010) IMAGE or SPECTROSCOPY 1
Columns (0028,0011) IMAGE or SPECTROSCOPY 1
Frame of Reference UID (0020,0052) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object.
Synchronization Frame of Reference UID (0020,0200) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object.
Number of Frames (0028,0008) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object.
Acquisition Time Synchronized (0018,1800) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object.
Acquisition Datetime (0008,002A) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object.
Image Position (Patient) (0020,0032) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object, either in the top level dataset or nested within a functional group sequence of the Shared Functional Groups Sequence (5200,9229).
Image Orientation (Patient) (0020,0037) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object, either in the top level dataset or nested within a functional group sequence of the Shared Functional Groups Sequence (5200,9229).
Pixel Spacing (0028,0030) IMAGE or SPECTROSCOPY 1C Required if present in image or spectroscopy object, either in the top level dataset or nested within a functional group sequence of the Shared Functional Groups Sequence (5200,9229).

Note: The requirements with respect to the mandatory DICOMDIR keys in PS 3.3 imply that either these attributes are present in the Image IOD, or they are in some other way supplied by the File-set Creator. These attributes are (0010,0020) Patient ID, (0008,0020) Study Date, (0008,0030) Study Time, (0020,0010) Study ID, (0020,0011) Series Number, and (0020,0013) Instance Number.