C.6.2 Study Root SOP Class Group
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### C.6.2 Study Root SOP Class Group

In the Study Root Query/Retrieve Information Model, the information is arranged into three levels that correspond to one of the three values in element (0008,0052) shown in Table C.6.2-1.

Table C.6.2-1. Query/Retrieve Level Values for Study Root

Query/Retrieve Level | Value in (0008,0052)
--- | ---
Study Information | STUDY
Series Information | SERIES
Composite Object Instance Information | IMAGE

### Note

The use of the word "Images" rather than "Composite Object Instances" is historical to allow backward compatibility with previous versions of the standard. It should not be taken to mean that Composite Object Instances of other than image type are not included at the level indicated by the value IMAGE.

#### C.6.2.1 Study Root Query/Retrieve Information Model

##### C.6.2.1.1 E/R Model

The Study Root Query/Retrieve Information Model may be represented by the entity relationship diagram shown in Figure C.6-2.

Figure C.6-2. Study Root Query/Retrieve Information Model E/R Diagram

##### C.6.2.1.2 Study Level

Table C.6-5 defines the keys at the Study Information level of the Study Root Query/Retrieve Information Model.

### Note

1. A description of the Attributes of this Information Model is contained in Section C.3.

2. Although the Patient ID may not be globally unique, the Study Instance UID is globally unique ensuring that no two studies may be misidentified.

Table C.6-5. Study Level Keys for the Study Root Query/Retrieve Information Model

Attribute Name | Tag | Type
--- | --- | ---
Study Date | (0008,0020) | R
Study Time | (0008,0030) | R
Accession Number | (0008,0050) | R
Patient's Name | (0010,0010) | R
Patient ID | (0010,0020) | R
Study ID | (0020,0010) | R
Study Instance UID | (0020,000D) | U
Modalities in Study | (0008,0061) | O
SOP Classes in Study | (0008,0062) | O
Referring Physician's Name | (0008,0090) | O
Study Description | (0008,1030) | O
Procedure Code Sequence | (0008,1032) | O
>Code Value | (0008,0100) | O
>Coding Scheme Designator | (0008,0102) | O
>Coding Scheme Version | (0008,0103) | O
>Code Meaning | (0008,0104) | O
Name of Physician(s) Reading Study | (0008,1060) | O
Admitting Diagnoses Description | (0008,1080) | O
Referenced Study Sequence | (0008,1110) | O
>Referenced SOP Class UID | (0008,1150) | O
>Referenced SOP Instance UID | (0008,1155) | O
Referenced Patient Sequence | (0008,1120) | O
>Referenced SOP Class UID | (0008,1150) | O
>Referenced SOP Instance UID | (0008,1155) | O
Issuer of Patient ID | (0010,0021) | O
Patient's Birth Date | (0010,0030) | O
Patient's Birth Time | (0010,0032) | O
Patient's Sex | (0010,0040) | O
Other Patient Ids | (0010,1000) | O
Other Patient Names | (0010,1001) | O
Patient's Age | (0010,1010) | O
Patient's Size | (0010,1020) | O
Patient's Weight | (0010,1030) | O
Ethnic Group | (0010,2160) | O
Occupation | (0010,2180) | O
Additional Patient History | (0010,21B0) | O
Patient Comments | (0010,4000) | O
Other Study Numbers | (0020,1070) | O
Number of Patient Related Studies | (0020,1200) | O
Number of Patient Related Series | (0020,1202) | O
Number of Patient Related Instances | (0020,1204) | O
Number of Study Related Series | (0020,1206) | O
Number of Study Related Instances | (0020,1208) | O
All other Attributes at Study Level |  | O

### Note

The use of the word "Images" rather than "Composite Object Instances" is historical, and should not be taken to mean that Composite Object Instances of other than image type are not included in the number.

##### C.6.2.1.3 Series Level

Attributes for the Series Level of the Study Root Query/Retrieve Information Model are the same as the Attributes for the Series Level of the Patient Root Query/Retrieve Information Model described in Section C.6.1.1.4.

##### C.6.2.1.4 Composite Object Instance Level

Attributes for the Composite Object Instance Level of the Study Root Query/Retrieve Information Model are the same as the Attributes for the Composite Object Instance Level of the Patient Root Query/Retrieve Information Model described in Section C.6.1.1.5.

##### C.6.2.1.5 Scope of the Get and Move Commands and Sub-Operations

A C-MOVE or C-GET request may be performed to any level of the Query/Retrieve Model. However, the transfer of Stored SOP Instances shall always take place at the Composite Object Instance level. A C-MOVE or C-GET where the Query/Retrieve level is the:

- STUDY level indicates that all Composite Object Instances related to a Study shall be transferred

- SERIES level indicates that all Composite Object Instances related to a Series shall be transferred

- IMAGE level indicates that selected individual Composite Object Instances shall be transferred

### Note

In the Baseline behavior, more than one entity may be retrieved if the Query/Retrieve Level is IMAGE, SERIES or STUDY, using List of UID matching,

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