Материал: part17

XXX.3.9 Stent Stabilization​

Figure XXX.3.9-1. Stent Stabilization​

XXX.3.9.1 User Scenario​

When evaluating the placement of a coronary artery stent, the stent is often viewed in each phase of a multiphase cardiac CT. An​ oblique Planar MPR MIP slab is typically used. Because of cardiac motion the oblique plane must be repositioned for each phase in​ order to yield the best view of the stent in that phase, resulting in a sequence of Planar MPR views with different geometry but​ identical display parameters.​

XXX.3.9.2 Encoding Outline​

The storage of the view shown in Figure XXX.3.9-1 requires the generation of one Planar MPR Volumetric Presentation State per​ cardiac phase in the input data. These presentation states form a Sequence Collection.​

XXX.3.9.3 Encoding Details​

XXX.3.9.3.1 Volumetric Presentation State Identification Module Recommendations​

Table XXX.3.9-1. Volumetric Presentation State Identification Module Recommendations​

XXX.3.9.3.2 Volumetric Presentation State Relationship Module Recommendations​

Table XXX.3.9-2. Volumetric Presentation State Relationship Module Recommendations​

XXX.3.9.3.3 Presentation View Description Module Recommendations​

This Module is replicated in each of the created Volumetric Presentation States.​

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XXX.3.9.3.4 Presentation Animation Module Recommendations​

This Module is replicated in each of the created Volumetric Presentation States.​

Table XXX.3.9-4. Presentation Animation Module Recommendations​

XXX.3.10 Highlighting Areas of Interest in Volume Rendered View​

XXX.3.10.1 User Scenario​

The goal is the Identification and Annotation of a bilateral iliac stenosis with an acquired CT scan. The objective is the visualization​ of a leg artery with a three-dimensional annotation. There are also informative two-dimensional annotations.​

XXX.3.10.2 Encoding Outline​

Figure XXX.3.10-1. Highlighted Areas of Interest Volume Rendered View Pipeline​

Specifying the classification transfer function, it is possible to provide a color and adjust the opacity of the rendering of different​ Hounsfield Units. The Render Shading Module is used to adjust parameters like the shininess and the different reflections. The​ Volumetric Graphic Annotation is used to display the active vessel selection. The Volumetric Graphic Annotation is a projection in the​ 3D Voxel Data, while the Graphic Annotation module provides annotation made directly in the 2D pixel data. Both types of annotation​ specify a Graphic Layer in which the annotation is displayed.​

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XXX.3.10.3 Encoding Details​

XXX.3.10.3.1 Volume Presentation State Relationship Module Recommendations​

Table XXX.3.10.3.1-1. Volume Presentation State Relationship Module Recommendations​

XXX.3.10.3.2 Volume Render Geometry Module Recommendations​

Table XXX.3.10.3.2-1. Volume Render Geometry Module Recommendations​

XXX.3.10.3.3 Render Shading Module Recommendations​

Table XXX.3.10.3.3-1. Render Shading Module Recommendations​

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XXX.3.10.3.5 Volumetric Graphic Annotation Module Recommendations​

Table XXX.3.10.3.5-1. Volumetric Graphic Annotation Module Recommendations​

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Page 760​ DICOM PS3.17 2020a - Explanatory Information​

XXX.3.10.3.6 Graphic Layer Module Recommendations​

Table XXX.3.10.3.6-1. Graphic Layer Module Recommendations​

XXX.3.11 Colorized Volume Rendering of Segmented Volume Data​

XXX.3.11.1 User Scenario​

A tumor in a volume has been identified and segmented. In volume rendered views the tumor is highlighted while preserving inform-​ ation about its relationship to surrounding anatomy.​

Figure XXX.3.11-1. Colorized Volume Rendering of Segmented Volume Data Pipeline​

XXX.3.11.2 Encoding Outline​

Render Display

Figure XXX.3.11-2. Segmented Volume Rendering Pipeline​

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