Examination. We listen, feel and sometimes look. We use the stethoscope to listen to the breath sounds. Sometimes we assess the lungs by thumping on the chest and/or feel the quality of the vibrations transmitted. The other technique is to look by way of a chest x-ray.
Exam or imaging. Either by listening to your lungs with a stethoscope or by imaging your lungs with chext x-ray or ct (computerized tomography) scans.