A.5 Nuclear Medicine Image IOD
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## A.5 Nuclear Medicine Image IOD

### A.5.1 NM Image IOD Description

The Nuclear Medicine (NM) Image Information Object Definition (IOD) specifies an image that has been created by a nuclear medicine imaging device. This includes data created by external detection devices that create images of the distribution of administered radioactive materials in the body. Depending on the specific radio pharmaceutical administered and the particular imaging procedure performed, problems involving changes in metabolism, function, or physiology can be investigated and various regional pathologies can be studied.

### A.5.2 NM Image IOD Entity-Relationship Model

The E-R Model in Section A.1.2 depicts those components of the DICOM Information Model that directly reference the NM Image IOD. The Modality LUT IE is not a component of the NM Image IOD.

### A.5.3 NM Image IOD Module Table (Retired)

This Section was defined in a previous version of the DICOM Standard. The Section is now retired.

### A.5.4 NM Image IOD Module Table

Table A.5-1. NM 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
NM/PET Patient Orientation | C.8.4.6 | M
Frame of Reference | Frame of Reference | C.7.4.1 | U
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
Image Pixel | C.7.6.3 | M
Acquisition Context | C.7.6.14 | U - See Section A.5.4.1
Device | C.7.6.12 | U
Specimen | C.7.6.22 | U
NM Image Pixel | C.8.4.7 | M
Multi-frame | C.7.6.6 | M
NM Multi-frame | C.8.4.8 | M
NM Image | C.8.4.9 | M
NM Isotope | C.8.4.10 | M
NM Detector | C.8.4.11 | M
NM TOMO Acquisition | C.8.4.12 | C - Required if Image Type (0008,0008) Value 3 is TOMO, GATED TOMO, RECON TOMO or RECON GATED TOMO
NM Multi-gated Acquisition | C.8.4.13 | C - Required if Image Type (0008,0008) Value 3 is GATED, GATED TOMO, or RECON GATED TOMO
NM Phase | C.8.4.14 | C - Required if Image Type (0008,0008) Value 3 is DYNAMIC
NM Reconstruction | C.8.4.15 | C - Required if Image Type (0008,0008) Value 3 is RECON TOMO or RECON GATED TOMO
Overlay Plane | C.9.2 | U
Multi-frame Overlay | C.9.3 | U
VOI LUT | C.11.2 | U
ICC Profile | C.11.15 | 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

### Note

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

#### A.5.4.1 Acquisition Context Module

For Acquisition Context Sequence (0040,0555) the Defined TID is TID 3470 “NM/PET Acquisition Context”, which includes description of the cardiovascular rest or stress state.

The Acquisition Context Sequence (0040,0555) shall always apply to all frames in the Image. Patient State shall always apply to all frames in the Image, therefore, Referenced Frame Numbers (0040,A136) shall not be present.

The Acquisition Context information may be entered during acquisition, or obtained from the Modality Worklist using information supplied in the Protocol Context, using TID 15101 “NM/PET Protocol Context”.

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