DICOM PS3.3 2021d - Information Object Definitions

A.3.3 CT Image IOD Module Table (Current)
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### A.3.3 CT Image IOD Module Table

Table A.3-1 specifies the Modules of the CT Image IOD.

Table A.3-1. CT 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
Frame of Reference | Frame of Reference | C.7.4.1 | M
Synchronization | C.7.4.2 | C - Required if time synchronization was applied.
Equipment | General Equipment | C.7.5.1 | M
Image | General Image | C.7.6.1 | M
General Reference | C.12.4 | U
Image Plane | C.7.6.2 | M
Image Pixel | C.7.6.3 | M
Contrast/Bolus | C.7.6.4 | C - Required if contrast media was used in this image
Device | C.7.6.12 | U
Specimen | C.7.6.22 | U
CT Image | C.8.2.1 | M
Multi-energy CT Image | C.8.2.2 | C - Required if Multi-energy CT Acquisition (0018,9361) is YES.
Overlay Plane | C.9.2 | U
VOI LUT | C.11.2 | U
SOP Common | C.12.1 | M
Common Instance Reference | C.12.2 | U

#### A.3.3.1 CT Image IOD Content Constraints

If Multi-energy CT Acquisition (0018,9361) is YES the following constraints will apply:

- The Contrast/Bolus Module shall be present if contrast was administered even if images are processed to remove contrast information from the pixels, e.g. Virtual Non-Contrast images.

- The Real World Value Mapping Sequence (0040,9096) shall be present in the General Image Module.

- For Measurement Units Code Sequence (0040,08EA) in the Real World Value Mapping Sequence (0040,9096) DCID 301 “Multi-energy Material Units” shall be used.

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DICOM PS3.3 2021d - Information Object Definitions