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Related Experiment Video

Updated: Feb 11, 2026

Using High Resolution Computed Tomography to Visualize the Three Dimensional Structure and Function of Plant Vasculature
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Tracheobronchial angles in children: Three-dimensional computed tomography-based measurements.

Tariq M Wani1,2, Basharat Buchh3, Faris Saeed AlGhamdi2

  • 1Department of Anesthesiology and Pain Medicine, Nationwide Children's Hospital, Columbus, OH, USA.

Paediatric Anaesthesia
|May 8, 2018
PubMed
Summary

Tracheobronchial angles in children under 8 are nearly identical between the right and left main bronchi. This study using 3D CT scans found no significant age-related differences in these pediatric airway measurements.

Keywords:
chest X-rayleft bronchial angleright bronchial angleright mainstem intubationtracheatracheal air column

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Area of Science:

  • Pediatric radiology
  • Anatomy
  • Medical imaging

Background:

  • Significant variations in tracheobronchial angles exist in pediatric patients.
  • Accurate 3D computed tomography (CT) imaging is crucial for understanding pediatric airway anatomy.

Purpose of the Study:

  • To measure right and left bronchial angles in children using 3D CT scans.
  • To clarify understanding of tracheobronchial angles in pediatric populations.

Main Methods:

  • Reviewed 3D CT scans of 45 children under 8 years old.
  • Calculated bronchial angles using the central axes of bronchi and trachea.
  • Analyzed angle differences and age dependence using statistical tests.

Main Results:

  • Right bronchial angle: 42° ± 7° (range 23°-56°).
  • Left bronchial angle: 43° ± 9° (range 25°-68°).
  • No statistically significant difference between right and left bronchial angles (P = .282); no age association found.

Conclusions:

  • Right and left bronchial angles are virtually identical in children up to 8 years old.
  • The difference between these angles does not vary with age in this pediatric cohort.