Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Changes in airway volume based an segmented airways from the CT scan (iVtot) in a patient (upper figures) mainly responsive to salbutamol (B) and less to ipratropium bromide (A), and in a patient (lower figures) more responsive to ipratropium bromide (C) and less responsive to salbutamol (D).
