Functional Residual volume can be measured by all except
All volume & capacities are measured by spirometer, except RV, CV, FRC & TLC which are measured by
a) N2 Washout method
b) Helium dilution method
c) Body Plethysmoglaphy (Best method)
Helium dilution method
Spirometer
N2 washout method
Body plethysmography