A.32.5 Video Endoscopic Image Information Object Definition

A.32.5.1 Video Endoscopic Image IOD Description

The Video Endoscopic Image IOD specifies the Attributes of Multi-frame Video Endoscopic Images.

A.32.5.2 Video Endoscopic Image IOD Entity-Relationship Model

The E-R Model in Section A.1.2 of this Part depicts those components of the DICOM Information Model that directly reference the Video Endoscopic Image IOD, with exception of the VOI LUT, and Modality LUT entities, which are not used. Table A.32.5-1 specifies the Modules of the Video Endoscopic Image IOD.

Notes :

1. The video may include audio channel(s) for acquiring patient voice or physiological sounds, healthcare professionals' commentary, or environmental sounds.

2. The Frame Pointers Module has not been included because the selection of relevant sub-sequence(s) is usually made in a second workflow step and stored into separate Key Object Selection Documents.

3. The Curve entity was previously include in the list of entities that are not used, but has been retired from DICOM. It is still not used in this IOD. See PS 3.3 2004.

Table A.32.5-1VIDEO ENDOSCOPIC IMAGE IOD MODULES

IE Module Reference Usage
Patient Patient C.7.1.1 M
Clinical Trial Subject C.7.1.3 U
Study General Study C.7.2.1 M
Patient Study C.7.2.2 U
Clinical Trial Study C.7.2.3 U
Series General Series C.7.3.1 M
Clinical Trial Series C.7.3.2 U
Equipment General Equipment C.7.5.1 M
Image General Image C.7.6.1 M
Cine C.7.6.5 M
Multi-frame C.7.6.6 M
Image Pixel C.7.6.3 M
Acquisition Context C.7.6.14 M
Device C.7.6.12 U
Specimen C.7.6.22 C - Required if the Imaging Subject is a Specimen
VL Image C.8.12.1 M
ICC Profile C.11.15 U
SOP Common C.12.1 M
Frame Extraction C.12.3 C - Required if the SOP Instance was created in response to a Frame-Level retrieve request

A.32.5.3 Video Endoscopic Image IOD Content Constraints

A.32.5.3.1 Modality

The value of Modality (0008,0060) shall be ES.

Note: The use of a single value for Modality recognizes the fact that the same acquisition equipment is often used for different purposes (e.g. laparoscopy and colonoscopy). This means that Modality is not useful to distinguish one type of endoscopy from another when browsing a collection of studies. Therefore, the use of Procedure Code Sequence (0008,1032) and Anatomic Region Sequence (0008,2218) in the image instances and in the query response is recommended, though gathering sufficient information to populate these attributes in an unscheduled workflow environment (i.e., in the absence of Modality Worklist) may require operator intervention.

A.32.5.3.2 Image Related Data Encoding

The Modality LUT, VOI LUT, Graphic Annotation and Overlay Modules shall not be present.

Note: The Curve Module was previously include in the list of Modules that shall not be present, but has been retired from DICOM. It is still not permitted to be present. See PS 3.3 2004.

A.32.5.3.3 Anatomic Region Sequence

The Defined Context Group for Anatomic Region Sequence (0008,2218) shall be CID 4040.