F.4 Basic Directory IOD Information Model

F.4 Basic Directory IOD Information Model (Current)
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The Basic Directory IOD Information Model defines the relationship between the various types of Directory Records that may be used in constructing DICOM Directories. This model is based on the DICOM Application Model defined in this part of the DICOM Standard. Entities in this Model correspond to Directory Records (DR). These are shown as rectangular boxes. Each Directory Record in this model is part of a Directory Entity (not shown except for the Root Entity) that is referenced by a Directory Record of a higher-level Directory Entity (e.g., a Study Directory Record references a Directory Entity that includes Directory Records describing the content of the Study).

Each Directory Record has a number of mandatory and optional Keys that are not shown on this model. They are defined in Section F.5. Conventions used are those used by this part of the DICOM Standard. The model is depicted as an entity/relationship model in Figure F.4-1. These Directory Record relationships are fully specified in Table F.4-1.

Figure F.4-1. Basic Directory IOD Information Model

Table F.4-1. Relationship Between Directory Records

Directory Record Type	Section	Directory Record Types that may be included in the next lower-level directory Entity
(Root Directory Entity)		PATIENT, HANGING PROTOCOL, PALETTE, IMPLANT, IMPLANT ASSY, IMPLANT GROUP, INVENTORY, PRIVATE
PATIENT	F.5.1	STUDY, PRIVATE
STUDY	F.5.2	SERIES, PRIVATE
SERIES	F.5.3	IMAGE, RT DOSE, RT STRUCTURE SET, RT PLAN, RT TREAT RECORD, PRESENTATION, WAVEFORM, SR DOCUMENT, KEY OBJECT DOC, SPECTROSCOPY, RAW DATA, REGISTRATION, FIDUCIAL, ENCAP DOC, VALUE MAP, STEREOMETRIC, PLAN, MEASUREMENT, SURFACE, TRACT, ASSESSMENT, RADIOTHERAPY, ANNOTATION, PRIVATE
IMAGE	F.5.4	PRIVATE
RT DOSE	F.5.19	PRIVATE
RT STRUCTURE SET	F.5.20	PRIVATE
RT PLAN	F.5.21	PRIVATE
RT TREAT RECORD	F.5.22	PRIVATE
PRESENTATION	F.5.23	PRIVATE
WAVEFORM	F.5.24	PRIVATE
SR DOCUMENT	F.5.25	PRIVATE
KEY OBJECT DOC	F.5.26	PRIVATE
SPECTROSCOPY	F.5.27	PRIVATE
RAW DATA	F.5.28	PRIVATE
REGISTRATION	F.5.29	PRIVATE
FIDUCIAL	F.5.30	PRIVATE
HANGING PROTOCOL	F.5.31	PRIVATE
ENCAP DOC	F.5.32	PRIVATE
VALUE MAP	F.5.34	PRIVATE
STEREOMETRIC	F.5.35	PRIVATE
PALETTE	F.5.36	PRIVATE
IMPLANT	F.5.37	PRIVATE
IMPLANT ASSY	F.5.38	PRIVATE
IMPLANT GROUP	F.5.39	PRIVATE
PLAN	F.5.40	PRIVATE
MEASUREMENT	F.5.41	PRIVATE
SURFACE	F.5.42	PRIVATE
SURFACE SCAN	F.5.43	PRIVATE
TRACT	F.5.44	PRIVATE
ASSESSMENT	F.5.45	PRIVATE
RADIOTHERAPY	F.5.46	PRIVATE
ANNOTATION	F.5.47	PRIVATE
INVENTORY	F.5.48	PRIVATE
PRIVATE	F.6.1	PRIVATE, (any of the above as privately defined)

Note

Directory Record Types PRINT QUEUE, FILM SESSION, FILM BOX, and IMAGE BOX were previously defined. They have been retired. See PS3.3-1998 .
Directory Record Types OVERLAY, MODALITY LUT, VOI LUT, CURVE, TOPIC, VISIT, RESULTS, INTERPRETATION, STUDY COMPONENT, STORED PRINT and MRDR were previously defined. They have been retired. See PS3.3-2004.
Directory Record Type HL7 STRUC DOC was previously defined. It has been retired. See PS3.3-2018b.

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