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Magnetic resonance imaging for suspected perianal Crohn's disease in children: a multi-reader agreement study.

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Title: Magnetic resonance imaging for suspected perianal Crohn's disease in children: a multi-reader agreement study.
Authors: Debnath, Pradipta1 (AUTHOR), Acord, Michael R.2 (AUTHOR), Anton, Christopher G.1,3 (AUTHOR), Courtier, Jesse4 (AUTHOR), El-Ali, Alexander M.5 (AUTHOR), Forbes-Amrhein, Monica M.6 (AUTHOR), Gee, Michael S.7 (AUTHOR), Greer, Mary-Louise C.8 (AUTHOR), Guillerman, R. Paul1,3 (AUTHOR), Kocaoglu, Murat1,3 (AUTHOR), Lala, Shailee V.5 (AUTHOR), Rees, Mitchell A.9 (AUTHOR), Schooler, Gary R.1,3 (AUTHOR), Towbin, Alexander J.1,3 (AUTHOR), Zhang, Bin10,11 (AUTHOR), Frischer, Jason S.12 (AUTHOR), Minar, Phillip13 (AUTHOR), Dillman, Jonathan R.1,3 (AUTHOR) jonathan.dillman@cchmc.org
Source: European Radiology. Sep2025, Vol. 35 Issue 9, p5856-5863. 8p.
Subjects: Magnetic resonance imaging, Crohn's disease, Pediatric radiology, Fistula, Abscesses, Radiologists, Diagnosis, School children
Abstract: Objectives: We aimed to assess inter-radiologist agreement when interpreting pelvic MRI in children with newly diagnosed perianal Crohn's disease (CD). Materials and methods: In this retrospective multi-reader study, we identified pediatric patients (< 18 years of age) who underwent a pelvic MRI examination for newly diagnosed perianal CD. Images were de-identified and uploaded to a cloud-based image platform for review by 13 fellowship-trained pediatric radiologists The reviewers assessed for the presence of a fistula and abscess, categorization of different imaging findings, and classification using the Parks and St James' University Hospital systems. Fleiss' kappa (κ) statistics and intra-class correlation coefficients (ICC) were used to measure inter-reader agreement, along with 95% confidence intervals (CI). Results: Forty-six patients were included in our study (median age = 13.0 years [IQR: 10.5 to 16.0 years]); thirty-five (76.1%) were boys. Most imaging features showed fair agreement (κ = 0.21 to 0.35). There was moderate agreement for categorical fistula length (κ = 0.42 [95% CI: 0.32 to 0.53]), involvement of the genitalia (κ = 0.45 [95% CI: 0.26 to 0.63]), and presence of an abscess/collection (κ = 0.52 [95% CI: 0.31 to 0.73]). Maximum abscess/collection length had good agreement (ICC = 0.81 [95% CI: 0.41, 1.00]). There was an almost equal split (yes vs. no: 50.7% vs. 49.3%) regarding whether postcontrast T1-weighted images added value compared to T2-weighted images alone across all radiologists and examinations. Conclusion: Inter-radiologist agreement when interpreting pelvic MRI for perianal CD in children is fair for most imaging features, with fewer features demonstrating moderate or good agreement. Key Points: QuestionPelvic magnetic resonance imaging (MRI) is used for diagnosing and monitoring children with perianal Crohn's disease (CD). Limited information is known about inter-radiologist agreement. FindingsAgreement between pediatric radiologists when interpreting MRI for perianal CD in children is only fair for most imaging features (κ = 0.21 to 0.35). Clinical relevanceUnderstanding MRI inter-radiologist agreement is crucial to improve the reliability of pelvic MRI in children with perianal Crohn's disease since it may affect patient management (e.g., surgery); further radiologist education and improved imaging feature definitions may help improve inter-radiologist agreement. [ABSTRACT FROM AUTHOR]
Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Magnetic resonance imaging for suspected perianal Crohn&#39;s disease in children: a multi-reader agreement study.
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22European+Radiology%22&quot;&gt;European Radiology&lt;/searchLink&gt;. Sep2025, Vol. 35 Issue 9, p5856-5863. 8p.
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  Data: Objectives: We aimed to assess inter-radiologist agreement when interpreting pelvic MRI in children with newly diagnosed perianal Crohn&#39;s disease (CD). Materials and methods: In this retrospective multi-reader study, we identified pediatric patients (&lt; 18 years of age) who underwent a pelvic MRI examination for newly diagnosed perianal CD. Images were de-identified and uploaded to a cloud-based image platform for review by 13 fellowship-trained pediatric radiologists The reviewers assessed for the presence of a fistula and abscess, categorization of different imaging findings, and classification using the Parks and St James&#39; University Hospital systems. Fleiss&#39; kappa (κ) statistics and intra-class correlation coefficients (ICC) were used to measure inter-reader agreement, along with 95% confidence intervals (CI). Results: Forty-six patients were included in our study (median age = 13.0 years [IQR: 10.5 to 16.0 years]); thirty-five (76.1%) were boys. Most imaging features showed fair agreement (κ = 0.21 to 0.35). There was moderate agreement for categorical fistula length (κ = 0.42 [95% CI: 0.32 to 0.53]), involvement of the genitalia (κ = 0.45 [95% CI: 0.26 to 0.63]), and presence of an abscess/collection (κ = 0.52 [95% CI: 0.31 to 0.73]). Maximum abscess/collection length had good agreement (ICC = 0.81 [95% CI: 0.41, 1.00]). There was an almost equal split (yes vs. no: 50.7% vs. 49.3%) regarding whether postcontrast T1-weighted images added value compared to T2-weighted images alone across all radiologists and examinations. Conclusion: Inter-radiologist agreement when interpreting pelvic MRI for perianal CD in children is fair for most imaging features, with fewer features demonstrating moderate or good agreement. Key Points: QuestionPelvic magnetic resonance imaging (MRI) is used for diagnosing and monitoring children with perianal Crohn&#39;s disease (CD). Limited information is known about inter-radiologist agreement. FindingsAgreement between pediatric radiologists when interpreting MRI for perianal CD in children is only fair for most imaging features (κ = 0.21 to 0.35). Clinical relevanceUnderstanding MRI inter-radiologist agreement is crucial to improve the reliability of pelvic MRI in children with perianal Crohn&#39;s disease since it may affect patient management (e.g., surgery); further radiologist education and improved imaging feature definitions may help improve inter-radiologist agreement. [ABSTRACT FROM AUTHOR]
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  Data: &lt;i&gt;Copyright of European Radiology is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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