A.54 X-Ray 3D Craniofacial Image IOD
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## A.54 X-Ray 3D Craniofacial Image IOD

### A.54.1 X-Ray 3D Craniofacial Image IOD Description

This Section defines the Information Object for multi-dimensional reconstructed cone beam X-Ray Craniofacial Images and includes those data elements and information objects necessary for the interchange of Multi-dimensional X-Ray volumes.

Examples of X-Ray 3D Craniofacial Images are: 3D reconstruction of craniofacial structures for surgical placement of implants, dimensional analysis for orthodontic therapy and evaluation of craniofacial pathology.

### A.54.2 X-Ray 3D Craniofacial Image IOD Entity-Relationship Model

The E-R Model in Section A.1.2 depicts those components of the DICOM Application Information Model that directly reference the X-Ray 3D Craniofacial Image IOD.

### A.54.3 X-Ray 3D Craniofacial Image IOD Module Table

Table A.54-1. X-Ray 3D Craniofacial 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
Enhanced Series | C.7.3.3 | M
Frame of Reference | Frame of Reference | C.7.4.1 | M
Equipment | General Equipment | C.7.5.1 | M
Enhanced General Equipment | C.7.5.2 | M
Image | Image Pixel | C.7.6.3 | M
Enhanced Contrast/Bolus | C.7.6.4b | C - Required if contrast media was applied.
Device | C.7.6.12 | U
Intervention | C.7.6.13 | U
Acquisition Context | C.7.6.14 | M
Multi-frame Functional Groups | C.7.6.16 | M
Multi-frame Dimension | C.7.6.17 | U
Patient Orientation | C.7.6.20 | U
Image - Equipment Coordinate Relationship | C.7.6.21 | U
Specimen | C.7.6.22 | U
X-Ray 3D Image | C.8.21.1 | M
X-Ray 3D Craniofacial Image Contributing Sources | C.8.21.2.2 | U
X-Ray 3D Craniofacial Acquisition | C.8.21.3.3 | U
X-Ray 3D Reconstruction | C.8.21.4 | U
SOP Common | C.12.1 | M
Common Instance Reference | C.12.2 | U
Frame Extraction | C.12.3 | C - Required if the SOP Instance was created in response to a Frame-Level retrieve request

#### A.54.3.1 X-Ray 3D Craniofacial Image IOD Content Constraints

##### A.54.3.1.1 Modality Type Attribute

The Modality Type attribute (0008,0060) shall have the value DX.

##### A.54.3.1.2 Restrictions for Standard Extended SOP Classes

The Overlay Plane Module, VOI LUT Module and Softcopy Presentation LUT Module shall not be used in a Standard Extended SOP Class of the X-Ray 3D Craniofacial Image.

### Note

1. The VOI LUT function is provided by a Frame VOI LUT Functional Group.

2. The Curve Module was previously included in the Image IE for this IOD but has been retired. See PS3.3-2004.

### A.54.4 X-Ray 3D Craniofacial Image Functional Group Macros

Table A.54-2 specifies the use of the Functional Group Macros used in the Multi-frame Functional Groups Module for the X-Ray 3D Craniofacial Image IOD.

Table A.54-2. X-Ray 3D Craniofacial Image Functional Group Macros

Functional Group Macro | Section | Usage
--- | --- | ---
Pixel Measures | C.7.6.16.2.1 | M
Frame Content | C.7.6.16.2.2 | M- May not be used as a Shared Functional Group.
Plane Position (Patient) | C.7.6.16.2.3 | M
Plane Orientation (Patient) | C.7.6.16.2.4 | M
Referenced Image | C.7.6.16.2.5 | U
Derivation Image | C.7.6.16.2.6 | C - Required if Image Type (0008,0008) Value 1 equals DERIVED.
Frame Anatomy | C.7.6.16.2.8 | M
Pixel Value Transformation | C.7.6.16.2.9 | U
Frame VOI LUT | C.7.6.16.2.10 | M
Real World Value Mapping | C.7.6.16.2.11 | U
Contrast/Bolus Usage | C.7.6.16.2.12 | C - Required if the Enhanced Contrast/Bolus Module is present.
X-Ray 3D Frame Type | C.8.21.5.1 | M

#### A.54.4.1 X-Ray 3D Craniofacial Image Functional Group Macros Content Constraints

##### A.54.4.1.1 Frame Anatomy Functional Group Macro

The Defined CID for the Anatomic Region Sequence (0008,2218) shall be CID 4028 “Craniofacial Anatomic Regions” or CID 4016 “Anatomic Region for Intra-oral Radiography”.

In the case of CID 4016 “Anatomic Region for Intra-oral Radiography”, the Defined CID for the Anatomic Region Modifier Sequence (0008,2220) shall be CID 4017 “Anatomic Region Modifier for Intra-oral Radiography”, if present, and the Defined CID for the Primary Anatomic Structure Sequence (0008,2228) shall be either CID 4018 “Primary Anatomic Structure for Intra-oral Radiography (permanent Dentition - Designation of Teeth)” or CID 4019 “Primary Anatomic Structure for Intra-oral Radiography (Deciduous Dentition - Designation of Teeth)”, if present.

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