Chest CT and lung CT are two ways of saying the same thing, there is no such thing as which one is better. Chest CT is mainly used to check the chest for abnormalities and has fewer side effects. Chest CT can be used to check the chest wall for lesions, pleural effusion, assist in the early diagnosis of lung cancer, detect large pulmonary alveoli, bronchial dilatation, mediastinal lymph nodes, and can be very good for visualizing rib fractures. Chest CT examination is mainly X-ray, its most common side effect is radiation, generally only when long time irradiation will have more serious side effects such as organ atrophy, bone marrow suppression, etc. Normal CT examination has less radiation and fewer side effects. If you have chest discomfort, you can use chest CT examination under the advice of your doctor.