E.3.3 Directory Information in DICOMDIR
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### E.3.3 Directory Information in DICOMDIR

Conformant Application Entities shall include in the DICOMDIR File a Basic Directory IOD containing Directory Records at the Patient and subsidiary levels appropriate to the SOP Classes in the File-set. All DICOM files in the File-set incorporating SOP Instances defined for the specific Application Profile shall be referenced by Directory Records.

### Note

DICOMDIRs with no directory information are not allowed by this Application Profile.

#### E.3.3.1 Additional Keys

File Set Creators and Updaters are required to generate the mandatory elements specified in Annex F “Basic Directory Information Object Definition (Normative)” in PS3.3.

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