Tracheal and central bronchial aerodynamics using virtual bronchoscopy and computational fluid dynamics

Area of Science:

• Pulmonary Medicine
• Medical Imaging
• Computational Fluid Dynamics

Background:

• Virtual bronchoscopy (VB) provides noninvasive airway morphologic data.
• Structural abnormalities like stenoses and masses can be identified using VB.

Purpose of the Study:

• To demonstrate the application of virtual bronchoscopy for aerodynamic calculations.
• To compute pressure and flow patterns in a human airway model.

Main Methods:

• Virtual bronchoscopy reconstructions of a human airway were created.
• Aerodynamic calculations were performed on these anatomically realistic models.
• Noninvasive computation of pressure and flow patterns.

Main Results:

• Decreased pressure was observed in the region of a stenosis.
• Increased shear stress was computed in the stenotic region.
• Aerodynamic changes were successfully modeled noninvasively.

Conclusions:

• Virtual bronchoscopy enables noninvasive aerodynamic analysis of airways.
• This approach can reveal functional changes associated with airway stenoses.
• VB has potential for assessing the physiological impact of airway abnormalities.