F.3.2 Example 2: Lung Nodule Detection with Findings and Anatomy/Pathology Interpretation

A chest CAD device processes a screening chest case with one image, and a lung nodule detected. The chest radiograph resembles:

PROJECTION CHEST [pic]

Figure F.3-2: Chest radiograph as Described in Example 2

The content tree structure in this example is complex. Structural illustrations of portions of the content tree are placed within the content tree table to show the relationships of data within the tree. Some content items are duplicated (and shown in boldface) to facilitate use of the diagrams.

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Figure F.3-3: Content Tree Root of Example 2 Content Tree

The content tree structure would resemble:

Node Code Meaning of Concept Name Code Meaning or Example Value TID
1 Chest CAD Report 4100
1.1 Image Library 4100
1.2 CAD Processing and Findings Summary All algorithms succeeded; with findings 4101
1.3 Summary of Detections Succeeded 4100
1.4 Summary of Analyses Not Attempted 4100

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Figure F.3-4: Image Library Branch of Example 2 Content Tree

Node Code Meaning of Concept Name Code Meaning or Example Value TID
1.1 Image Library 4100
1.1.1 IMAGE 1 4020
1.1.1.1 Image View Postero-anterior 4020
1.1.1.2 Study Date 19990101 4020

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Figure F.3-5: CAD Processing and Findings Summary Portion of Example 2 Content Tree

Node Code Meaning of Concept Name Code Meaning or Example Value TID
1.2 CAD Processing and Findings Summary All algorithms succeeded; with findings 4101
1.2.1 Single Image Finding Abnormal Opacity 4104
1.2.1.1 Single Image Finding Modifier Nodule 4104
1.2.1.2 Rendering Intent Presentation Required:… 4104
1.2.1.3 Algorithm Name “Lung Nodule Detector” 4019
1.2.1.4 Algorithm Version “V1.3 4019
1.2.1.5 Center POINT 4107
1.2.1.5.1 Reference to Node 1.1.1 4107
1.2.1.6 Outline POLYLINE 4107
1.2.1.6.1 Reference to Node 1.1.1 4107
1.2.1.7 Diameter 2 cm 1400
1.2.1.7.1 Path POLYLINE 1400
1.2.1.7.1.1 Reference to Node 1.1.1 1400

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Figure F.3-6: Summary of Detections Portion of Example 2 Content Tree

Node Code Meaning of Concept Name Code Meaning or Example Value TID
1.3 Summary of Detections Succeeded 4100
1.3.1 Successful Detections 4015
1.3.1.1 Detection Performed Nodule 4017
1.3.1.1.1 Algorithm Name “Lung Nodule Detector” 4019
1.3.1.1.2 Algorithm Version “V1.3 4019
1.3.1.1.3 Reference to node 1.1.1 4017