Health screening chest X-ray is mainly used to look at the lungs, you can incidentally look at the heart and diaphragm. Chest X-ray is a common tool used to screen for tuberculosis. If the chest X-ray indicates a problem, you need to check the lung CT for further clarification, and if the chest X-ray indicates no problem for the time being, you don’t need another examination. The advantage of chest X-ray is mainly cheaper, and can change position at will, you can get a certain sense of three-dimensional. However, the disadvantage is that the imaging is not as clear as chest X-ray or CT, and only the report cannot be issued, so the clinician can only see the report but not the film, which has certain limitations for the diagnosis of the disease.