F.5.2 Study Directory Record Definition

F.5.2 Study Directory Record Definition (Current)
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The Directory Record is based on the specification of Section F.3. It is identified by a Directory Record Type of Value "STUDY". Table F.5-2 lists the set of keys with their associated Types for such a Directory Record Type. The description of these keys may be found in the Modules related to the Study IE of Composite IODs. This Type of Directory Record may reference a Lower-Level Directory Entity that includes one or more Directory Records as defined in Table F.4-1. Only one Study Directory Record per Study Instance UID shall be present in a Basic Directory Instance; this implies that a Study belongs to a single patient and shall be referenced only once for that patient.

Table F.5-2. Study Keys

Key	Tag	Type	Attribute Description
Specific Character Set	(0008,0005)	1C	Required if an extended or replacement character set is used in one of the keys.
Study Date	(0008,0020)	1
Study Time	(0008,0030)	1
Study Description	(0008,1030)	2
Study Instance UID	(0020,000D)	1C	Required only if (0004,1511) is absent (see Note).
Study ID	(0020,0010)	1
Accession Number	(0008,0050)	2
Any other Attribute of the Study IE Modules		3

Note

The Study Instance UID shall be present as a mandatory key only if no file is referenced by this Directory Record. In the case where this Directory Record references a file, the Directory Record contains in the Referenced SOP Instance UID in File (0004,1511). In this case (0004,1511) may be used as a "pseudo" Directory Record Key (see Table F.3-3) and need not be duplicated.