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Insights into Imaging
Published in: Insights into Imaging 1/2023

Open Access 01-12-2023 | Rib Fracture | Original Article

Determining rib fracture age from CT scans with a radiomics-based combined model: a multicenter retrospective study

Authors: Yilin Tang, Liang Jin, Wenbin Ji, Zhuangxuan Ma, Dechun Li, Wei Hong, Ming Li

Published in: Insights into Imaging | Issue 1/2023

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Abstract

Objectives

We aimed to develop a combined model based on clinical and radiomic features to classify fracture age.

Methods

We included 1219 rib fractures from 239 patients from our center between March 2016 and September 2022. We created an external dataset using 120 rib fractures from 32 patients from another center between October 2019 and August 2023. According to tasks (fracture age between < 3 and ≥ 3 weeks, 3–12, and > 12 weeks), the internal dataset was randomly divided into training and internal test sets. A radiomic model was built using radiomic features. A combined model was constructed using clinical features and radiomic signatures by multivariate logistic regression, visualized as a nomogram. Internal and external test sets were used to validate model performance.

Results

For classifying fracture age between < 3 and ≥ 3 weeks, the combined model had higher areas under the curve (AUCs) than the radiomic model in the training set (0.915 vs 0.900, p = 0.009), internal test (0.897 vs 0.854, p < 0.001), and external test sets (0.881 vs 0.811, p = 0.003). For classifying fracture age between 3–12 and > 12 weeks, the combined model had higher AUCs than the radiomic model in the training model (0.848 vs 0.837, p = 0.12) and internal test sets (0.818 vs 0.793, p < 0.003). In the external test set, the AUC of the nomogram-assisted radiologist was 0.966.

Conclusion

The combined radiomic and clinical model showed good performance and has the potential to assist in the classification of rib fracture age. This will be beneficial for clinical practice and forensic decision-making.

Critical relevance statement

This study describes the development of a combined radiomic and clinical model with good performance in the classification of the age of rib fractures, with potential clinical and forensic applications.

Key points

• Complex factors make it difficult to determine the age of a fracture.
• Our model based on radiomic features performed well in classifying fracture age.
• Associating the radiomic features with clinical features improved the model’s performance.

Graphical Abstract

Appendix
Available only for authorised users
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Metadata
Title
Determining rib fracture age from CT scans with a radiomics-based combined model: a multicenter retrospective study
Authors
Yilin Tang
Liang Jin
Wenbin Ji
Zhuangxuan Ma
Dechun Li
Wei Hong
Ming Li
Publication date
01-12-2023
Publisher
Springer Vienna
Published in
Insights into Imaging / Issue 1/2023
Electronic ISSN: 1869-4101
DOI
https://doi.org/10.1186/s13244-023-01546-y

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