Query/Retrieve Level Attribute
| Tag | (0008,0052) |
|---|---|
| Type | Conditionally Required (1C) |
| Keyword | QueryRetrieveLevel |
| Value Multiplicity | 1 |
| Value Representation | Code String (CS) |
Matching level for Relational Matching mechanism. See Section C.38.2.1.1.2.
Enumerated Values:
- STUDY
-
Study level
- SERIES
-
Series level
- IMAGE
-
SOP Instance level
Required if Extended Matching Mechanisms (0008,040F) includes value RELATIONAL.
Section C.38.2.1.1.2
C.38.2.1.1.2 Relational Matching
If Extended Matching Mechanisms (0008,040F) does not include the value RELATIONAL, only Key Attributes defined at the Study level, as specified in Section C.6.2.1.2 “Study Level” in PS3.4, shall be included in Scope of Inventory.
If Extended Matching Mechanisms (0008,040F) includes the value RELATIONAL, Studies are selected for the Inventory in accordance with the specifications for Relational-queries matching in Section C.4.1.3.2.2 “Relational Search Method” in PS3.4 using the Query/Retrieve Level (0008,0052) and Key Attributes specified. The Inventory Level (0008,0403) determines the level of information that is included in the Inventory and may differ from this Query/Retrieve Level (0008,0052). In the case that the Inventory Level (0008,0403) is at or lower than the Query/Retrieve Level (0008,0052), then only the records for entities matching all Key Attributes will be included in the Inventory.
Note
For example, specification of Relational Matching, Query/Retrieve Level (0008,0052) SERIES, and a Key Attribute Modality (0008,0060) with value CT will include in the Inventory all Studies that have at least one Series with Modality CT. If the Inventory Level (0008,0403) is INSTANCE, only those Series and Instances with modality CT will be included in the Inventory; Series and Instances with Modality PR or SR, for example, in the same Study will not be included.
Baseline (non-relational) matching of Modalities in Study (0008,0061) with value CT will also include in the Inventory all Studies that have at least one Series with Modality CT. But since that Key Attribute performs selection at the Study level, an Inventory will include all Series of any modality for that Study.