Keywords
academic accomplished accurate added addition adults airway airways alveolar alveoli artwork assess audience authors behind bipolar branches branching breathing bulk care central childhood coefficients combinations completely computer concluded conclusively conditions connected constant currently cycle cylinder decrease dependence described development diffusion diffusivity dimensions discriminate duct ducts element ends enforces enlargement error evidence existing expansion expected findings finite fourth framework function furthermore geometric geometries gradient grossly growing growth helium hold human impact in vivo inaccurate inadequate incomplete increasing indicate infinite inflation initial integration interpreted investigated isolated keeping kept larger length like longitudinal lung lungs magnetization makes maps measured median mixtures model models must occurred original overestimated paper papers parallel periodic perpendicular population predominant produce prove quantification radiology radius rather rationale reduction reported respect respectively schematic segment segments simple simplified simulate simulations slight solved strength structural structure studies subjects suited table target terms therapies transverse treatment true understanding unit unreal upon validity volume wild woods years
