A.55 Breast Tomosynthesis Image IOD
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## A.55 Breast Tomosynthesis Image IOD

### A.55.1 Breast Tomosynthesis Image IOD Description

This Section defines the Information Object for multi-dimensional reconstructed breast tomosynthesis X-Ray Images that includes those data elements and information objects necessary for the interchange of multi-dimensional breast tomosynthesis X-Ray volumes.

### Note

This IOD is not intended for interchange of source projection x-ray images.

### A.55.2 Breast Tomosynthesis 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 Breast Tomosynthesis Image IOD.

### A.55.3 Breast Tomosynthesis Image IOD Module Table

Table A.55-1. Breast Tomosynthesis 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 Mammography Series | C.8.11.10 | M
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
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 Module | C.7.6.17 | 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
Breast Tomosynthesis Contributing Sources | C.8.21.2.3 | U
Breast Tomosynthesis Acquisition | C.8.21.3.4 | U
X-Ray 3D Reconstruction | C.8.21.4 | U
Breast View | C.8.21.6 | M
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.55.3.1 Breast Tomosynthesis Image IOD Content Constraints

##### A.55.3.1.1 Restrictions for Standard Extended SOP Classes

The Overlay Plane Module, Modality LUT Module, VOI LUT Module and Softcopy Presentation LUT Module shall not be used in a Standard Extended SOP Class of the Breast Tomosynthesis Image.

### Note

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

##### A.55.3.1.2 Image - Equipment Coordinate Relationship Module

For Breast Tomosynthesis Image SOP Instances created from SOP Instances of the Breast Projection X-Ray Image SOP Classes (1.2.840.10008.5.1.4.1.1.13.1.4 or 1.2.840.10008.5.1.4.1.1.13.1.5) the isocenter coordinate system shall be used to describe the positioning of the X-Ray Source, Detector and Breast Support (see Section C.8.31.6), and shall use only the value ISOCENTER for Equipment Coordinate System Identification (0028,9537).

### A.55.4 Breast Tomosynthesis Image Functional Group Macros

Table A.55-2 specifies the use of the Functional Group Macros used in the Multi-frame Functional Groups Module for the Breast Tomosynthesis Image IOD.

Table A.55-2. Breast Tomosynthesis 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
Identity Pixel Value Transformation | C.7.6.16.2.9b | M
Frame VOI LUT With LUT | C.7.6.16.2.10b | 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 - May not be used as a Shared Functional Group.

#### A.55.4.1 Breast Tomosynthesis Image Functional Group Macros Content Constraints

##### A.55.4.1.1 Frame Anatomy Functional Group Macro

The Defined CID for the Anatomic Region Sequence (0008,2218) shall be CID 4013 “Anatomic Region for Mammography”.

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