DICOM PS3.16 2020c - Content Mapping Resource

CID 646 Preclinical Small Animal Imaging Procedures (Current)
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## CID 646 Preclinical Small Animal Imaging Procedures

Resources:

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Type:

  Extensible

Version:

  20151110

UID:

  1.2.840.10008.6.1.1111

Table CID 646. Preclinical Small Animal Imaging Procedures

Coding Scheme Designator | Code Value | Code Meaning | SNOMED-RT ID | UMLS Concept Unique ID
--- | --- | --- | --- | ---
LN | 46305-9 | Whole body CT |  | C1830206
LN | 24725-4 | Head CT | P5-08067 | C0202691
LN | 46358-8 | MRI whole body | P5-0905E | C1830259
LN | 24590-2 | Brain MRI |  | C0881827
LN | 44139-4 | PET whole body | R-FB9B7 | C1715409
LN | 44138-6 | Brain PET |  | C0412493
LN | 42175-0 | Radionuclide scan of whole body | P5-D0072 | C1626178
LN | 24730-4 | Radionuclide brain scan | P5-D9020 | C0581582
DCM | 127901 | SPECT of whole body |  |
LN | 39632-5 | Brain SPECT |  | C1543694
DCM | 127902 | SPECT CT of whole body |  |
SCT | 24135002 | Ultrasonography of total body | P5-B0008 | C0203309

### Note

1. The inconsistent pattern of modality and anatomy in the code meaning is present in the source coding scheme (e.g., "Whole body CT" versus "PET whole body"), and not changed, except where necessary (e.g., (42175-0, LN, "Radionuclide scan of whole body") is actually just "scan of whole body" in the source scheme, which is insufficient, so "radionuclide" has been added).

2. The UMLS codes that map to the SNOMED concepts, when present, are shown, in the cases when UMLS is lacking a mapping between the LOINC and SNOMED codes. E.g., (44138-6, LN, "Brain PET") maps directly to (C1715408, UMLS, "Multisection:Find:Pt:Brain:Doc:Radnuc.PET"), but (764666002, SCT, "PET Brain Study") (which does not have an SRT code) maps to (C0412493, UMLS, "PET Brain Study"), which is used instead. In general, UMLS does not unify the mappings from LOINC and SNOMED, presumably due to the lexical dissimilarity of the terms (i.e., the LOINC mapping seems to be based on the fully-specified name rather than the long common name).

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