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) which is referenced by a Directory Record of a higher-level Directory Entity (e.g., a Study Directory Record references a Directory Entity which includes Directory Records describing the content of the Study).
Each Directory Record has a number of mandatory and optional keys which 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.
Table F.4-1RELATIONSHIP BETWEEN DIRECTORY RECORDS
|Directory Record Type||Section||Directory Record Types which may be included in the next lower-level directory Entity|
|(Root Directory Entity)||⎯||PATIENT, HANGING PROTOCOL, PALETTE, IMPLANT, IMPLANT ASSY, IMPLANT GROUP, PRIVATE|
|PATIENT||F.5.1||STUDY, HL7 STRUC DOC, 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, PRIVATE|
|RT STRUCTURE SET||F.5.20||PRIVATE|
|RT TREAT RECORD||F.5.22||PRIVATE|
|KEY OBJECT DOC||F.5.26||PRIVATE|
|HL7 STRUC DOC||F.5.33||PRIVATE|
|PRIVATE||F.6.1||PRIVATE, (any of the above as privately defined)|
Notes: 1. Directory Record Types PRINT QUEUE, FILM SESSION, FILM BOX, and IMAGE BOX were previously defined in DICOM. They have been retired. See PS 3.3-1998.
2. Directory Record Types OVERLAY, MODALITY LUT, VOI LUT, CURVE, TOPIC, VISIT, RESULTS, INTERPRETATION, STUDY COMPONENT, STORED PRINT and MRDR were previously defined in DICOM. They have been retired. See PS 3.3-2004.