How do doctors typically check your lungs?

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.