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Page 1676​

DICOM PS3.3 2020a - Information Object Definitions​

Attribute Name​

Tag​

Type​

Attribute Description​

>Directory Record Type​(0004,1430)​

1​ Defines a specialized type of Directory Record by reference to its position in the​

 

 

Media Storage Directory Information Model (see Section F.4).​

Enumerated Values:​

PATIENT​

STUDY​

SERIES​

IMAGE​

RADIOTHERAPY​ RT DOSE​

RTSTRUCTURESET​ RT PLAN​

RT TREAT RECORD​

PRESENTATION​

WAVEFORM​

SR DOCUMENT​

KEY OBJECT DOC​

SPECTROSCOPY​ RAW DATA​ REGISTRATION​ FIDUCIAL​ HANGING​ PROTOCOL​ ENCAP DOC​ VALUE MAP​ STEREOMETRIC​ PALETTE​ IMPLANT​ IMPLANT GROUP​ IMPLANT ASSY​ MEASUREMENT​ SURFACE​ SURFACE SCAN​ TRACT​ ASSESSMENT​

PRIVATE​ Privately defined record hierarchy position. Type shall be​ defined by Private Record UID (0004,1432).​

Note​

1.​Enumerated Values PRINT QUEUE, FILM SESSION, FILM BOX,​ and IMAGE BOX were previously defined. They are now retired. See​ PS3.3-1998.​

2.​Enumerated Values OVERLAY, MODALITY LUT, VOI LUT, CURVE,​ TOPIC,VISIT,RESULTS,INTERPRETATION,STUDYCOMPONENT​ and STORED PRINT were previously defined. They are now retired.​ See PS3.3-2004.​

3.​Enumerated Value MRDR was previously defined, to allow indirect​ reference to a File by multiple Directory Records. It is now retired.​ FSUs and FSRs are unlikely to be capable of supporting this​ mechanism. See PS3.3-2004.​

4.​Enumerated Value HL7 STRUC DOC was previously defined. It is​ now retired. See PS3.3-2018b.​

- Standard -​

 

 

DICOM PS3.3 2020a - Information Object Definitions​

Page 1677​

Attribute Name​

Tag​

 

Type​

Attribute Description​

 

>Private Record UID​

(0004,1432)​

1C​ Required if the Directory Record Type (0004,1430) is of Value PRIVATE. This UID​

 

 

 

 

isusedtodefineanon-standardtypeofDirectoryRecordbyreferencetoitsposition​

 

 

 

 

inaprivateextensiontotheBasicDirectoryIODInformationModel(seeSectionF.5).​

 

 

 

 

This UID shall be registered according to the procedures defined in PS3.5. Its​

 

 

 

 

meaning may or may not be specified in a Conformance Statement.​

 

>Referenced File ID​

(0004,1500)​

1C​ A Multiple Value (see PS3.5) that represents the ordered components of the File​

 

 

 

 

ID containing a "referenced object" or Referenced SOP Instance. A maximum of 8​

 

 

 

 

components, each from 1 to 8 characters shall be used (see Section 8.2).​

 

 

 

 

 

Note​

 

 

 

 

 

 

The Referenced File ID provides the means to "locate" the File through​

 

 

 

 

 

the DICOM File Service provided by the Media Format Layer.​

 

 

 

 

 

All referenced Files shall be with the File-set to which the Directory belongs. Any​

 

 

 

 

File within the File-set (to which the Directory belongs) shall be referenced by at​

 

 

 

 

most one Directory Record. When the Directory Record does not reference any​

 

 

 

 

SOP Instance this Attribute shall not be present.​

 

>ReferencedSOPClass​(0004,1510)​

1C​ Unique ID for the SOP Class of the Instance stored in the referenced File.​

UID in File​

 

 

 

Required if the Directory Record references a SOP Instance.​

 

 

 

 

 

 

>Referenced SOP​

(0004,1511)​

1C​ Unique Identifier for the SOP Instance stored in the referenced file.​

 

Instance UID in File​

 

 

 

Required if the Directory Record references a SOP Instance.​

 

 

 

 

 

 

>Referenced Transfer​

(0004,1512)​

1C​ Unique Identifier for the Transfer Syntax used to encode the Instance stored in the​

Syntax UID in File​

 

 

 

referenced file.​

 

 

 

 

 

Required if the Directory Record references a SOP Instance.​

 

>Referenced Related​

(0004,151A)​

1C​ Unique ID for the Related General SOP Class(es) related to the SOP Class of the​

General SOP Class UID​

 

 

Instance stored in the referenced file.​

 

in File​

 

 

 

Required if the Directory Record references a SOP Instance that encodes the​

 

 

 

 

 

 

 

 

Related General SOP Class UID (0008,001A).​

 

 

 

 

 

 

Note​

 

 

 

 

 

 

This may be useful to an FSR that does not support the SOP Class of the​

 

 

 

 

 

referenced Instance, but does support one of the Related General SOP​

 

 

 

 

 

Classes.​

 

>Record Selection Keys​See F.5​

See​

AnumberofDICOMDataElementsthatcontainspecifickeysdefinedforeachtype​

 

 

F.5​

of Directory Record (0004,1430) defined in Section F.5.​

 

F.4 Basic Directory IOD Information Model​

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).​

EachDirectoryRecordhasanumberofmandatoryandoptionalkeysthatarenotshownonthismodel.TheyaredefinedinSectionF.5.​ Conventions used are those used by this part of the DICOM Standard. The model is depicted as an entity/relationship model in Fig-​ ure F.4-1. These Directory Record relationships are fully specified in Table F.4-1.​

- Standard -​

Page 1678​ DICOM PS3.3 2020a - Information Object Definitions​

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,HANGINGPROTOCOL,PALETTE,IMPLANT,​

 

 

IMPLANT ASSY, IMPLANT GROUP, 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,​

 

 

SRDOCUMENT,KEYOBJECTDOC,SPECTROSCOPY,​

 

 

RAWDATA,REGISTRATION,FIDUCIAL,ENCAPDOC,​

 

 

VALUE MAP, STEREOMETRIC, PLAN,​

 

 

MEASUREMENT, SURFACE, TRACT, ASSESSMENT,​

 

 

RADIOTHERAPY, 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​

PRIVATE​

F.6.1​

PRIVATE, (any of the above as privately defined)​

- Standard -​

DICOM PS3.3 2020a - Information Object Definitions​

Page 1679​

Note​

1.​Directory Record Types PRINT QUEUE, FILM SESSION, FILM BOX, and IMAGE BOX were previously defined. They​ have been retired. See PS3.3-1998.​

2.​DirectoryRecordTypesOVERLAY,MODALITYLUT,VOILUT,CURVE,TOPIC,VISIT,RESULTS,INTERPRETATION,​ STUDYCOMPONENT,STOREDPRINTandMRDRwerepreviouslydefined.Theyhavebeenretired.SeePS3.3-2004.​

3.​Directory Record Type HL7 STRUC DOC was previously defined. It has been retired. See PS3.3 2018b.​

F.5 Definition of Specific Directory Records​

The following Sections specify a number of Directory Records that were introduced by the Basic Directory IOD Information Model​ presented in Section F.4. For each one, it identifies the SOP Classes that may be referenced and the related mandatory keys. Keys​ are assigned a Type designation that indicates if it is required for all Media Storage Operations of the Directory (see Section 5).​

Type 2 and Type 3 Keys may be changed to Type 1 and Type 2 or 3 respectively by Application Profiles defined in PS3.11. Keys​ based on Private Data Elements, or Private Keys may also be used in addition to Standard defined Keys. However such Private keys​ may be ignored by any File-set Reader or Updater.​

- Standard -​

Page 1680​

DICOM PS3.3 2020a - Information Object Definitions​

Root Directory Entity

1 includes

 

 

0-n

 

0-n

 

 

 

0-n

Hanging Protocol DR

 

Patient DR

 

Color Palette DR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

references

1-n

Study DR

1 references

Series DR

1 references

0-n

Presentation DR

0-n

Spectroscopy DR

0-n

Stereometric DR

0-n

Encapsulated Document DR

0-n

Real-World Value DR

0-n

RT Structure Set DR

0-n

RT Treatment Record DR

0-n

Measurement DR

0-n

Surface Scan DR

0-n

Tractography DR

0-n

Content Assessments Result DR

0-n

Registration DR

0-n

Fiducials DR

0-n

Image DR

0-n

Raw Data DR

0-n

Waveform DR

0-n

SR Document DR

0-n

RT Dose DR

0-n

RT Plan DR

0-n

Plan DR

0-n

Radiotherapy DR

 

 

0-n

 

 

 

0-n

 

 

 

0-n

Generic Implant

 

Implant Template

 

Implant Assembly

Template DR

 

Group DR

 

Template DR

 

 

 

The Higher-Level

 

Higher Level DR

 

Directory Record

 

 

 

 

 

 

references a

 

 

 

 

references

LowerLevel

 

 

 

Directory Entity

 

 

 

that includes the

 

Lower Level DR

Lower-Level

 

 

 

Directory Record

 

 

 

 

 

 

 

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

Note​

Normalized Print media storage was previously defined in DICOM. It is now retired. See PS3.3-1998.​

F.5.1 Patient Directory Record Definition​

The Directory Record is based on the specification of Section F.3. It is identified by a Directory Record Type of Value "PATIENT."​ Table F.5-1 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 Patient IOD or the Patient IE of Image 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.​

Table F.5-1. Patient 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​

- Standard -​

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