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DICOM PS3.17 2020a - Explanatory Information​

Page 761​

In this pipeline the different classifications for the segmented objects are shown, followed by the blending operations. To visualize​ the vessels, they are first classified with a special transfer function and then blended over the background image. The segmented​ Tumor is also classified and then blended over the Vessels + Bones. Generally the classified segmented volumes are blended in​ lowest to highest priority order using B-over-A blending of the RGB data and the corresponding opacity (alpha) data.​

XXX.3.11.3 Encoding Details​

XXX.3.11.3.1 Volumetric Presentation State Relationship Module Recommendations​

Table XXX.3.11.3.1-1. Volumetric Presentation State Relationship Module Recommendations​

Attribute Name​

Tag​

Comment​

Volumetric Presentation Input Set Sequence​

(0070,120A)​

One item in this sequence​

Item #1​

 

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

>Presentation Input Type​

(0070,1202)​

Set to VOLUME​

>Referenced Image Sequence​

(0070,1140)​

Set reference(s) to the image(s) that​

 

 

make up the input volume​

Volumetric Presentation State Input Sequence​

(0070, 1201)​

Three items are this sequence.​

Item #1​

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 1​

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

>Crop​

(0070, 1204)​

Set to 'NO'​

>Item #2​

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 2​

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

>Crop​

(0070, 1204)​

Set to 'NO'​

>Item #3​

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 3​

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

>Crop​

(0070, 1204)​

Set to 'NO'​

XXX.3.11.3.2 Volume Render Geometry Module Recommendations​

Table XXX.3.11.3.2-1. Volume Render Geometry Module Recommendations​

Attribute Name​

Tag​

Comment​

Render Projection​

(0070,1602)​

Set to ORTHOGRAPHIC​

Viewpoint Position​

(0070,1603)​

Viewpoint specifies a posterior coronal view​

Viewpoint Look At Point​

(0070,1604)​

 

Viewpoint Up Direction​

(0070,1605)​

 

Render Field of View​

(0070,1606)​

Field of view covers the entire range of the scan.​

Rendering Method​

(0070,120D)​

Set to VOLUME_RENDERED​

- Standard -​

Page 762​ DICOM PS3.17 2020a - Explanatory Information​

XXX.3.11.3.3 Render Shading Module Recommendations​

Table XXX.3.11.3.3-1. Render Shading Module Recommendations​

Attribute Name​

Tag​

Comment​

Shading Style​

(0070,1701)​

Set to "DOUBLESIDED"​

Ambient Reflection Intensity​

(0070,1702)​

Set to 0.6​

Light Direction​

(0070,1703)​

Set to (1.0, 0.0, -1.0)​

Diffuse Reflection Intensity​

(0070,1704)​

Set to 0.6​

Specular Reflection Intensity​

(0070,1705)​

Set to 0.4​

Shininess​

(0070,1706)​

Set to 0.3​

XXX.3.11.3.4 Render Display Module Recommendations​

Table XXX.3.11.3.4-1. Render Display Module Recommendations​

Attribute Name​

Tag​

Pixel Presentation​

(0008, 9205)​

Volume Stream Sequence​

(0070,1A08)​

Item #1 in Volume Stream Sequence​

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

>Presentation State​

(0070,1801)​

Classification Component​

Sequence​

>Item #1 in Presentation State Classification Component Sequence​

>>Component Type​

(0070, 1802)​

>>Component Input Sequence​

(0070, 1803)​

>>Item #1 in Component Input Sequence​

 

>>>Volumetric Presentation Input Index​

(0070,1804)​

>>RGB LUT Transfer Function​

(0028,140F)​

>>Alpha LUT Transfer Function​

(0028,1410)​

>> RGB Palette Color Lookup Table Descriptors and Data​

>> Alpha Palette Color Lookup Table Descriptor and Data​

>Item #2 in Presentation State Classification Component Sequence​

>>Component Type​

(0070, 1802)​

>>Component Input Sequence​

(0070, 1803)​

>>Item #1 in Component Input Sequence​

 

>>>Volumetric Presentation Input Index​

(0070,1804)​

>>RGB LUT Transfer Function​

(0028,140F)​

>>Alpha LUT Transfer Function​

(0028,1410)​

>>RGB Palette Color Lookup Table Descriptors and Data​

>>Alpha Palette Color Lookup Table Descriptor and Data​

Comment​

Set to 'TRUE_COLOR'​

One item in this sequence​

UID1​

Include three items, one for each classification​ component​

Set to 'ONE_TO_RGBA'​ Set only one item in this sequence, since the​

component has only one input.​

Set to '1' for the bones.​

Set to 'TABLE'.​

Set to 'TABLE'.​

Set to 'ONE_TO_RGBA'​ Set only one item in this sequence, since the​

component has only one input.​

Setto'2'forthesegmentedvesselsandkidneys​ Set to 'TABLE'​

Set to 'TABLE'.​

- Standard -​

DICOM PS3.17 2020a - Explanatory Information​

Page 763​

Attribute Name​

Tag​

Comment​

 

>Item #3 in Presentation State Classification Component Sequence​

 

 

>>Component Type​

(0070, 1802)​

Set to 'ONE_TO_RGBA'​

 

>>Component Input Sequence​

(0070, 1803)​

Set only one item in this sequence, since the​

 

 

component has only one input.​

 

>>Item #1 in Component Input Sequence​

 

 

 

>>Volumetric Presentation Input Index​

(0070,1804)​

Set to '3' for the segmented tumor.​

 

>RGB LUT Transfer Function​

(0028,140F)​

Set to 'EQUAL_RGB'​

 

>Alpha LUT Transfer Function​

(0028,1410)​

Set to "NONE".​

 

Presentation State Compositor Component​

(0070,1805)​

empty​

 

Sequence​

 

 

 

ICC Profile​

(0028,2000)​

Value corresponding to IEC 61966-2-1:1999​

Color Space​

(0028,2002)​

Set to SRGB​

 

XXX.3.12 Liver Resection Planning​

XXX.3.12.1 User Scenario​

A patient has been imaged by CT at arterial and portal venous contrast phases in order to plan for a liver resection. The two phases​ are rendered together to visualize the relationship of the tumor to the portal vein, hepatic veins and hepatic arteries to ensure the re-​ section avoids these structures.​

Figure XXX.3.12-1. Liver Resection Planning Pipeline​

- Standard -​

Page 764​ DICOM PS3.17 2020a - Explanatory Information​

XXX.3.12.2 Encoding Outline​

 

 

 

3D Voxel Data

 

 

 

 

 

 

2D Pixel Data

 

 

 

 

 

 

 

 

Projection

 

 

 

 

VOI LUT

Cropping:

Classification

RGBA

 

 

 

 

 

 

 

 

Liver

 

 

 

 

 

 

 

 

 

 

 

Volume

 

 

 

 

 

 

 

 

 

 

 

Blending

RGBA

 

 

 

 

 

 

 

 

 

 

(B over A)

 

 

 

 

 

 

 

UID1

VOI LUT

Cropping:

Classification

RGBA

 

 

 

 

 

 

 

Tumor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Volume

 

 

 

 

 

 

 

 

 

 

 

Blending

RGBA

 

 

 

 

 

 

 

 

 

 

(B over A)

 

 

 

 

 

 

 

VOI LUT

Cropping:

Classification

RGBA

 

 

 

 

 

 

 

 

Artery

 

 

 

 

Graphic

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Annotation

 

 

 

 

 

 

 

 

RGB

RGBA

Volume

PCS-Values

Graphic

PCS-Values

 

 

 

 

 

 

Compositor

Rendering

Layer

 

 

 

 

 

 

 

 

 

 

VOI LUT

Cropping:

Classification

RGBA

 

 

 

 

 

 

 

 

Hep. Veins

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

UID2

 

 

 

Volume

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Blending

RGBA

 

 

 

 

 

 

 

 

 

 

(B over A)

 

 

 

 

 

 

 

 

VOI LUT

Cropping:

Classification

RGBA

 

 

 

Render Shading

 

 

 

 

Portal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Render

 

 

 

 

 

 

 

 

 

 

 

Geometry

 

 

 

 

 

Cropping Specification Index values,

 

 

 

 

 

 

 

 

 

 

Volume Cropping

 

 

 

 

 

 

 

 

 

 

 

 

Render Display

 

 

 

 

 

 

 

 

 

Figure XXX.3.12-2. Multiple Volume Rendering Pipeline​

Inthispipeline,volumestreamsfromtwovolumeinputsareblendedtogether.Fromthearterialphasevolumeinput,segmentedviews​ of the liver, tumor and hepatic arteries are blended in sequence (B over A). From the venous phase volume input, segmented views​ of the hepatic veins and the portal vein are blended in sequence (B over A). Outputs from these operations are blended together with​ both given equal weight.​

XXX.3.12.3 Encoding Details​

XXX.3.12.3.1 Volumetric Presentation State Relatonship Module Recommendations​

Table XXX.3.12.3.1-1. Volumetric Presentation State Relatonship Module Recommendations​

Attribute Name​

Tag​

Comment​

Volumetric Presentation Input Set Sequence​

(0070,120A)​

 

Item #1​

 

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

>Presentation Input Type​

(0070,1202)​

Set to VOLUME​

>Referenced Image Sequence​

(0008,1140)​

Reference to Arterial phase CT​

 

 

volume​

Item #2​

 

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID2​

>Presentation Input Type​

(0070,1202)​

Set to VOLUME​

>Referenced Image Sequence​

(0008,1140)​

Reference to Portal Venous phase​

 

 

CT volume​

- Standard -​

DICOM PS3.17 2020a - Explanatory Information​

Page 765​

Attribute Name​

Tag​

Comment​

 

Volumetric Presentation State Input Sequence​

(0070,1201)​

 

 

Item #1​

 

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 1​

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

 

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

 

>Crop​

(0070,1204)​

Set to YES​

 

>Cropping Specification Index​

(0070,1205)​

Set to 1​

 

Item #2​

 

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 2​

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

 

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

 

>Crop​

(0070,1204)​

Set to YES​

 

>Cropping Specification Index​

(0070,1205)​

Set to 2​

 

Item #3​

 

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 3​

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID1​

 

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

 

>Crop​

(0070,1204)​

Set to YES​

 

>Cropping Specification Index​

(0070,1205)​

Set to 3​

 

Item #4​

 

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 4​

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID2​

 

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

 

>Crop​

(0070,1204)​

Set to YES​

 

>Cropping Specification Index​

(0070,1205)​

Set to 4​

 

Item #5​

 

 

 

>Volumetric Presentation Input Number​

(0070,1207)​

Set to 5​

 

>Volumetric Presentation Input Set UID​

(0070,1209)​

Set to UID2​

 

>Include VOI LUT Macro Table C.11-2B​

 

Set to identity​

 

>Crop​

(0070,1204)​

Set to YES​

 

>Cropping Specification Index​

(0070,1205)​

Set to 5​

 

XXX.3.12.3.2 Volume Cropping Module Recommendations​

 

 

Table XXX.3.12.3.2-1. Volume Cropping Module Recommendations​

 

Attribute Name​

Tag​

Comment​

 

Volume Cropping Sequence​

(0070,1301)​

 

 

Item #1​

 

 

 

>Cropping Specification Number​

(0070,1309)​

Set to 1​

 

>Volume Cropping Method​

(0070,1302)​

Set to INCLUDE_SEG​

 

>Referenced Image Sequence​

(0008,1140)​

Reference to Liver segment​

 

Item #2​

 

 

 

- Standard -​

Источник: https://studfile.net/preview/14585770/

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