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Establishing reference values for the pediatric abdominal aorta in MRI.
Corona Metz1, Anne Pohrt2, Katja Glutig3
1Charité-Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Pediatric Radiology, Berlin, Germany. corona.metz@charite.de.
European Radiology
|August 6, 2025
Summary
This study establishes the first magnetic resonance imaging (MRI)-based reference values for pediatric abdominal aortic diameter. These findings provide crucial data for diagnosing and monitoring cardiovascular conditions in children.
Area of Science:
- Radiology and Imaging
- Pediatric Cardiology
- Vascular Imaging
Background:
- Limited reference values exist for pediatric abdominal aortic diameter.
- Existing data does not utilize magnetic resonance imaging (MRI).
Purpose of the Study:
- To establish MRI-based reference values for pediatric abdominal aortic diameter.
- To develop predictive formulas for aortic diameter based on body surface area (BSA) and sex.
Main Methods:
- 150 healthy children underwent MRI with contrast.
- Aortic diameters were measured at four key levels by two radiologists.
- Regression models were used to correlate diameter with BSA, considering sex.
Main Results:
- Excellent interrater reliability (ICC 0.98-0.99) was achieved.
- Natural logarithmic polynomial regression best modeled aortic diameter to BSA.
- Normative data, including graphs and tables, were generated.
Conclusions:
- Reference values for pediatric abdominal aortic diameter were determined using MRI.
- These values account for BSA and sex, aiding clinical assessment.
- This provides essential data for diagnosing and managing pediatric cardiovascular diseases.
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