The Directory Record is based on the specification of Section F.3. It is identified by a Directory Record Type of Value "PLAN". Table F.5-40 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 Instance-level IEs of Plan IODs. This Directory Record shall be used to reference one of the class of Plan SOP Instances having a Modality (0008,0060) of “PLAN”, such as the RT Beams Delivery Instruction IOD. 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.
Table F.5-40PLAN KEYS
|Specific Character Set||(0008,0005)||1C||Required if an extended or replacement character set is used in one of the keys.|
|Any other Attribute of the Instance-level IE Modules||3|
Note: Because Referenced SOP Instance UID in File (0004,1511) may be used as a "pseudo" Directory Record Key (See Table F.3-3), it is not duplicated in this list of keys.