F.3 Chest CAD SR Examples
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## F.3 Chest CAD SR Examples

The following is a simple and non-comprehensive illustration of an encoding of the Chest CAD SR IOD for chest computer aided detection results. For brevity, some mandatory content items are not included, such as several acquisition context content items for the images in the Image Library.

### F.3.1 Example 1: Lung Nodule Detection With No Findings

A chest CAD device processes a typical screening chest case, i.e., there is one image and no nodule findings. Chest CAD runs lung nodule detection successfully and finds nothing.

The chest radiograph resembles:

Figure F.3-1. Chest Radiograph as Described in Example 1

The content tree structure would resemble:

Node | Code Meaning of Concept Name | Code Meaning or Example Value | TID
--- | --- | --- | ---
1 | Chest CAD Report |  | TID 4100
1.1 | Image Library |  | TID 4100
1.1.1 |  | IMAGE 1 | TID 4020
1.1.1.1 | Image View | Postero-anterior | TID 4020
1.1.1.2 | Study Date | 19980101 | TID 4020
1.2 | CAD Processing and Findings Summary | All algorithms succeeded; without findings | TID 4101
1.3 | Summary of Detections | Succeeded | TID 4100
1.3.1 | Successful Detections |  | TID 4015
1.3.1.1 | Detection Performed | Nodule | TID 4017
1.3.1.1.1 | Algorithm Name | "Lung Nodule Detector" | TID 4019
1.3.1.1.2 | Algorithm Version | "V1.3" | TID 4019
1.3.1.1.3 |  | Reference to node 1.1.1 | TID 4017
1.4 | Summary of Analyses | Not Attempted | TID 4100

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F.2 Chest CAD SR Observation Context Encoding | Home | F.3.2 Example 2: Lung Nodule Detection With Findings and Anatomy/pathology Interpretation