The most common methods of lung volume measurement include:
- Spirometry: This is a widely used test that measures the amount and speed of air a person can inhale and exhale. It provides key indicators such as FEV1 (Forced Expiratory Volume in one second) and FVC (Forced Vital Capacity).
- Plethysmography: This test measures the volume of gas in the lungs, including the air that remains after a full exhalation (residual volume). It is more precise in measuring total lung capacity.
- Gas Dilution Tests: These involve inhaling a harmless gas and measuring its concentration in exhaled air to estimate lung volume.
