> For the complete documentation index, see [llms.txt](https://docs.snomed.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.snomed.org/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index.md).
# Clinical Imaging Procedure Naming Conventions
Almost all imaging procedures can be unambiguously expressed in a number of ways. There is a balance between flexibility in language and efficiency in terminology maintenance. Consequently, all variants for imaging modalities are not routinely included in SNOMED CT. Submissions for additional descriptions must be justified explicitly.
At a minimum, procedures are ordinarily expressed with the modality and body site. Existing content may have inconsistencies, but new content should following the naming conventions that follow.
{% hint style="success" %}
The use of *near synonyms* is acceptable for clinical imaging procedures:
For example,
* 79516005 | Renal arteriography (procedure)| has the synonym renal angiography
* 726077005 | Computed tomography arteriography of bronchial artery (procedure)| has the synonym CT *angiography* of bronchial artery
* 709552006 | Computed tomography angiography of iliac artery (procedure)| has the synonym CT *angiogram* of iliac artery
{% endhint %}
## Subpages
{% columns %}
{% column %}
{% content-ref url="/pages/tzT88D3AvA796toM8u4f" %}
[Imaging Adjustments for View, Projection, or Technique](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/imaging-adjustments-for-view-projection-or-technique.md)
{% endcontent-ref %}
{% content-ref url="/pages/BSfwQtT3kpOJqNTg1SK6" %}
[Diagnostic Imaging for Multiple Body Sites](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/diagnostic-imaging-for-multiple-body-sites.md)
{% endcontent-ref %}
{% content-ref url="/pages/emyzfpA47Qjh7mBwpkmL" %}
[Nuclear Medicine - Radionuclide Imaging](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/nuclear-medicine-radionuclide-imaging.md)
{% endcontent-ref %}
{% content-ref url="/pages/eJ2B7nx4wMzGPqyLGvil" %}
[Multi-modality Imaging: PET, CT and SPECT, CT](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/multi-modality-imaging-pet-ct-and-spect-ct.md)
{% endcontent-ref %}
{% content-ref url="/pages/bVC0SqJlniNAup8mNjsp" %}
[Single Photon Emission Computed Tomography - SPECT](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/single-photon-emission-computed-tomography-spect.md)
{% endcontent-ref %}
{% content-ref url="/pages/KTcmfvWrrsPUyQy3w96H" %}
[Positron Emission Tomography - PET](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/positron-emission-tomography-pet.md)
{% endcontent-ref %}
{% content-ref url="/pages/HA23qKHdxNI6PA6eJ5Ns" %}
[Fluoroscopy and Fluoroscopic Imaging](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/fluoroscopy-and-fluoroscopic-imaging.md)
{% endcontent-ref %}
{% endcolumn %}
{% column %}
{% content-ref url="/pages/9fbBmPGvggJvfwDZ5NDT" %}
[Imaging Guided Procedure Naming](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/imaging-guided-procedure-naming.md)
{% endcontent-ref %}
{% content-ref url="/pages/rbFZiuubgkKpI4nFhLSo" %}
[Contrast for Imaging](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/contrast-for-imaging.md)
{% endcontent-ref %}
{% content-ref url="/pages/yldOb0dW8GNK5SyFBMAQ" %}
[Magnetic Resonance Imaging - MRI](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/magnetic-resonance-imaging-mri.md)
{% endcontent-ref %}
{% content-ref url="/pages/omogc5yH2FidOPgRrQk1" %}
[Computed Tomography - CT](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/computed-tomography-ct.md)
{% endcontent-ref %}
{% content-ref url="/pages/Cp14AsDbCbT3govh8t08" %}
[Ultrasonography](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/ultrasonography.md)
{% endcontent-ref %}
{% content-ref url="/pages/muB8MMCuImHX9GnXEldl" %}
[Radiographic Imaging, X-ray and Plain X-ray](/snomed-ct-specifications/snomed-ct-editorial-guide/readme/authoring/domain-specific-modeling/procedure/index-1/index/radiographic-imaging-x-ray-and-plain-x-ray.md)
{% endcontent-ref %}
{% endcolumn %}
{% endcolumns %}
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