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Dynamic Airway CT

Last Updated: 2026-01-01 Author: None

  • 1. Clinical Summary

    Series Phase Coverage
    Inspiration Full inspiration Thoracic inlet → Carina+10cm
    Mid-Expiration Forced mid-expiration Thoracic inlet → Carina+10cm
    • Tracheobronchomalacia
    • Expiratory central airway collapse
    • EDAC

  • 2. Patient Prep

    • Position: Supine with arms raised
    • NPO Status: N/A
    • Pre-Medication:
      • None required

  • 3. IV Contrast & Injection

    No Intravenous Contrast

    This protocol does not require IV contrast administration.

  • 4. Special Notes

    • TWO acquisitions: 1) INSPIRATION carina to carina+10cm 2) MID-EXPIRATION same level. Airway reconstructions required
    • No IV. Coach dynamic breathing. May need forced expiration

    Safety First

    • Renal Function: N/A
    • Allergy: N/A
    • Measure tracheal collapse percentage. >50% collapse suggests tracheomalacia. Assess bronchi
    • Coach forced expiration. Exact same level both phases
Series Name Start Location End Location Delay Slice Thickness Notes
Inspiration Thoracic inlet Carina+10cm Full inspiration 0.625-1 mm Thin for 3D
Mid-Expiration Thoracic inlet Carina+10cm Forced mid-expiration 0.625-1 mm Same level as inspiration
Plane Acquisition FOV Thickness/Increment Kernel IR Strength Notes
Axial Both phases Airway 1-2 mm/1 mm Lung 3 Axial airway
Coronal Both phases Airway 1.5 mm Lung 3 Coronal airway
Sagittal Both phases Airway 1.5 mm Lung 3 Sagittal airway
3D VR Both phases Airway 0.625-1 mm source Lung N/A 3D airway reconstruction