A selection of DICOM SOP instances and/or frames within a single Study and Series. This might include additional specifics such as an image region, an Observation UID or a Segmentation Number, allowing linkage to an Observation Resource or transferring this information along with the ImagingStudy Resource.

A unique identifier assigned to this imaging selection.

Allows imaging selections to be distinguished and referenced.

This is a business identifier, not a resource identifier -- see discussion under Business Identifiers.

A list of the diagnostic requests that resulted in this imaging selection being performed.

The patient, or group of patients, location, device, organization, procedure or practitioner this imaging selection is about and into whose or what record the imaging selection is placed.

The date and time this imaging selection was created.

Author – human or machine.

Distinguishes the type of involvement of the performer.

Allows disambiguation of the types and involvement of different performers.

Author – human or machine.

Describes the imaging selection.

Knowing what kind of observation is being made is essential to understanding the observation.

All code-value and, if present, component.code-component.value pairs need to be taken into account to correctly understand the meaning of the observation.

The Study Instance UID for the DICOM Study from which the images were selected.

DICOM Study Instance UID. Required unless frameOfReferenceUid and imageRegion are present.

See DICOM PS3.3 C.7.2 .

The imaging study from which the imaging selection is made.

The network service providing retrieval access to the selected images, frames, etc. See implementation notes for information about using DICOM endpoints.

Access methods for retrieving (e.g., DICOM’s WADO-URI and WADO-RS) the selected images, frames, etc.

Typical endpoint types include DICOM WADO-RS, which is used to retrieve DICOM instances in native or rendered (e.g., JPG, PNG) formats using a RESTful API; DICOM WADO-URI, which can similarly retrieve native or rendered instances, except using an HTTP query-based approach.

The Series Instance UID for the DICOM Series from which the images were selected.

DICOM Series Instance UID. Required unless frameOfReferenceUid and imageRegion are present.

See DICOM PS3.3 C.7.3 .

The Frame of Reference UID identifying the coordinate system that conveys spatial and/or temporal information for the selected images or frames.

DICOM Frame of Reference UID. Required if studyInstanceUid and seriesInstanceUid are not present.

See DICOM PS3.3 C.7.4.1 .

The anatomic structures examined. See DICOM Part 16 Annex L (http://dicom.nema.org/medical/dicom/current/output/chtml/part16/chapter_L.html) for DICOM to SNOMED-CT mappings.

Each imaging selection includes one or more selected DICOM SOP instances.

Required if the the selection does not include all instances in the specified series.

The SOP Instance UID for the selected DICOM instance.

DICOM SOP Instance UID.

See DICOM PS3.3 C.12.1 .

The SOP Class UID for the selected DICOM instance.

DICOM SOP Class UID.

See DICOM PS3.3 C.12.1 .

The set of frames within a multi-frame SOP Instance that are included in the imaging selection. Encoded as a comma separated list of one or more non duplicate frame numbers. If this is absent, all frames within the referenced SOP Instance are included in the selection.

Required if not the selected instance is multi-frame and not all frames are included in the selection.

See DICOM PS3.3 10.3 .

The unique identifier for the observation Content Item (and its subsidiary Content Items, if any) that are included in the imaging selection.

DICOM Observation UID.

See DICOM PS3.3 C.12.1 .

The set of segments within a segmentation SOP Instance that are included in the imaging selection. Encoded as a comma separated list of one or more non duplicate segment numbers. If this is absent, all segments within the referenced segmentation SOP Instance are included in the selection.

Required if not the selected instance is segmentation and not all segments are included in the selection.

See DICOM PS3.3 10.3 .

The set of regions of interest (ROI) within a radiotherapy structure set instance that are included in the imaging selection. Encoded as a comma separated list of one or more non duplicate ROI numbers. If this is absent, all ROIs within the referenced radiotherapy structure set SOP Instance are included in the selection.

Required if not the selected instance is a radiotherapy structure set and not all ROIs are included in the selection.

See DICOM PS3.3 C.8.8.5 .

Each imaging selection might includes one or more image regions. Image regions are specified by a region type and a set of 2D or 3D coordinates.

Required if studyInstanceUid and seriesInstanceUid are not present. A single imaging selection shall not include both 2D and 3D coordinates.

Specifies the type of image region.

See DICOM PS3.3 C.18.9.1.2 .

Specifies the type of coordinate system that define the image region.

The coordinates describing the image region. If coordinateType is 2D this specifies sequence of (x,y) coordinates in the coordinate system of the image specified by the instance.uid element that contains this image region. If coordinateType is 3D this specifies sequence of (x,y,z) coordinates in the coordinate system specified by the frameOfReferenceUid element.

For a description of how 2D coordinates are encoded, see DICOM PS3.3 C.18.6 . For a description of how 3D coordinates are encoded, see DICOM PS3.3 C.18.9 .