Chest X-ray is the traditional method which captures images of the heart, lungs, airways, blood vessels and bones of the spine/chest. Most of the lungs and respiratory diseases can be diagnosed with this simple imaging method. A small indication during this test can help the doctor decide on the requirement of further advanced testing like CT or MRI.
PFT is another test that helps assess the volumes of your lungs, rates of flow and gas exchange, basically the breathing.