DICOM PS3.17 2021d - Explanatory Information

VVVV.2 Encoding Example (Current)
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## VVVV.2 Encoding Example

This section illustrates the usage of the Section C.37.1.2 Microscopy Bulk Simple Annotations Module in PS3.3 in the context of the Section A.87 Microscopy Bulk Simple Annotations IOD in PS3.3 .

The example consists of:

- Group of Polygons "1" outlining nuclei, consisting of:

  - 86 polygons

    - Point Coordinates Data (0066,0016) => describes the coordinates for all points in the polygons.

- Encoding of Annotation Property that the cell structure is a nucleus

- Encoding of Measurement Values

  - For storing measurement values like area values on specific polygons, the following are present:

    - Measurements Sequence (0066,0121), which contains an Item for each type of measurement, in this case area

    - Measurement Values Sequence (0066,0132), which contains an item containing an array of area measurements for all of the polygons

Table VVVV.2-1 shows the encoding of the Microscopy Bulk Simple Annotations Module for the example above.

Table VVVV.2-1. Example of the Microscopy Bulk Simple Annotations Module

Name | Tag | Value | Comment
--- | --- | --- | ---
... |  |  |
Frame of Reference UID | (0020,0052) | 1.2.3.4.... |
... |  |  |
Annotation Coordinate Type | (006A,0001) | 3D |
Annotation Group Sequence | (006A,0002) |  |
>Annotation Group Number | (0040,A180) | 1 |
>Point Coordinates Data | (0066,0016) | 0.66675, 0.032, 0.6665, 0.03225, 0.6665, 0.03275, 0.66675, 0.033, 0.66725, 0.033, 0.66725, 0.03275, 0.6675, 0.0325, 0.6675, 0.03225, 0.66725, 0.032, ... |
>Long Primitive Point Index List | (0066,0040) | 0x00000001, 0x00000013, 0x0000008d, ... |
>Measurements Sequence | (0066,0121) |  |
>>Measurement Units Code Sequence | (0040,08EA) | ({pixels}, UCUM, "pixels") |
>>Concept Name Code Sequence | (0040,A043) | (42798000, SCT, "Area") |
>>Measurement Values Sequence | (0066,0132) |  |
>>>Floating Point Values | (0066,0125) | 20.0, 559.0, 24.0, ... |
> Annotation Group UID | (006A,0003) | 1.2.3.4.5.... |
>Annotation Group Label | (006A,0005) | NUCLEI |
>Annotation Group Description | (006A,0006) | Nuclei detected on H&E |
>Annotation Group Generation Type | (006A,0007) | AUTOMATIC |
>Annotation Group Algorithm Identification Sequence | (006A,0008) |  |
>>Algorithm Family Code Sequence | (0066,002F) | (C16309,NCIt,"Artificial Intelligence") |
>>Algorithm Name | (0066,0036) | Acme Nucleus Detector |
>>Algorithm Version | (0066,0031) | 1.0 |
>Annotation Property Category Code Sequence | (006A,0009) | (4421005, SCT, "Cell Structure") |
>Annotation Property Type Code Sequence | (006A,000A) | (84640000, SCT, "Nucleus") |
>Number of Annotations | (006A,000C) | 0x00000056 |
>Annotation Applies to All Optical Paths | (006A,000D) | YES |
>Annotation Applies to All Z Planes | (006A,000F) | NO |
>Common Z Coordinate Value | (006A,0010) | 0 |
>Graphic Type | (0070,0023) | POLYGON |

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DICOM PS3.17 2021d - Explanatory Information