# Radiation Oncology Structures Ontology (ROS)

> This ontology describes commonly contoured (anatomical and treatment planning) structures for...

- Page: https://library.schematica.io/model/c59ee41f225b4ee7a4d47f0c61d00cd1
- Model type: Ontology
- License: CC BY 4.0
- Access type: Academic
- Access method: Download
- Model size: Small
- Formats: OWL
- Domains: Healthcare
- Audiences: Researcher
- External link: https://bioportal.bioontology.org/ontologies/ROS
- Contact: Jean-Emmanuel Bibault (jean-emmanuel.bibault@aphp.fr)
- Listed in library: 2025-06-12
- Last updated: 2025-09-10

## Description

## Ontology Info

| Field | Value |
|-------|-------|
| Acronyme | ROS |
| Description | This ontology describes commonly contoured (anatomical and treatment planning) structures for radiation treatment planning. 22000 structures labels (created over a 16 years period in our radiation department) were extracted, classified and categorized to produce this ontology. Lymph nodes delineation international guidelines are provided.<br><br>This ontology was created to ease and standardize the integration of radiation oncology data into clinical datawarehouses for multicentric studies. The high granularity of this ontology will allow precise dosimetric evaluations. |
| Format | OWL |
| Categories | Anatomy, Human, Imaging |
| Groups |  |

## Metrics

| Metric | Value |
|--------|-------|
| Classes | 416 |
| Individuals | 0 |
| Properties | 2 |
| Max Depth | 8 |
| Max Child Count | 14 |
| Average Child Count | 5 |
| Classes With One Child | 1 |
| Classes With More Than 25 Children | 0 |
| Classes With No Definition | 317 |

## Projects using ROS

No projects using ROS

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Source: https://library.schematica.io/model/c59ee41f225b4ee7a4d47f0c61d00cd1