Table 2—

Applications of quantitative airway measurements

ApplicationAirway sizeCurrent methods
Identifying airway stenoses (e.g. malignancy, transplant anastamotic stricture)LargeMDCTVideobronchoscopyVirtual bronchoscopy
Airway stent selection (calibre and length)LargeMDCT aided by 3D rendering
Videobronchoscopy
Assessing endobronchial tumour sizeLargeVideobronchoscopy
IntermediateMDCT
EBUS
Dynamic narrowing of bronchomalaciaLargeVideobronchoscopy
IntermediateMDCT
Site of airway narrowing in obstructive lung diseasesSmall, IntermediateMDCT
Measurement of airway narrowing during bronchoconstrictionSmall, IntermediateMDCT
Measuring airway wall thickness in asthma/COPDSmall, IntermediateMDCT
  • COPD: chronic obstructive pulmonary disease; MDCT: multidetector computed tomography; 3D: three dimensional; EBUS: endobronchial ultrasound.