ArticleFrontiers in medicine2025
The RACOON viral pneumonia score for structured reporting of pre-existing, acute, and post-pneumonic findings on chest CT.
Article in Frontiers in medicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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1 citing paper in PubMed.
- Thymic evolution on serial CT in glucocorticoid-treated pediatric pneumonia: a retrospective analysis.BMC pediatrics · 2026Article
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10 authors.
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Abstract
Background: The multi-dimensional RACOON Viral Pneumonia Score (RVPS) was developed to compensate for the main weaknesses of the established one-dimensional chest computed tomography (CT) scores. It aimed to quantify the severity of pneumonia and qualitatively monitor infectious lung disease from the acute stage to post-pneumonic sequelae. Objectives: This research focuses on the original development and evaluation of applicability and inter-reader reliability of the RVPS. Methods: Within the Radiological Cooperative Network (RACOON), the scoring system was developed after several expert meetings and tested in this proof-of-concept study with 8,525 observations. In the subset of inter-reader validation (7,800 observations), eight blinded radiologists applied the RVPS and evaluated the following CT findings for each lung lobe individually: (I) pure ground glass opacities (GGO), (II) GGO and interstitial thickening, (III) consolidations, (IV) linear opacities and reticulations, and (V) fibrotic-like changes. The extent of each pathology was scored on a scale of 0-5 points, and the total involvement was calculated. Inter-reader variability was assessed using Kendall's W. Results: Overall inter-reader reliability of the RVPS was excellent (Kendalls' W 0.95). CT findings associated with acute pneumonia were scored with good agreement (W 0.81-0.87). Moderate uncertainty was introduced when separating category IV vs. category V findings (W 0.55-0.69). The overall extent of post-infectious findings was assessed with good agreement (W 0.79). The longitudinal distribution of subscores allowed for differentiation between acute pneumonia and post-pneumonic sequelae. Conclusion: This study presents the RVPS as a comprehensive tool for inter-reader reliable evaluation, longitudinal monitoring, and structured documentation of the extent as well as quality of chest CT findings in infectious lung disease.
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