Patients with alveolar rupture are usually detected by chest radiographs. In addition, the following related tests are available: 1. Lung volume measurement Lung volume measurement includes eight indicators: tidal volume, compensatory inspiratory volume, compensatory expiratory volume, residual gas volume, deep inspiratory volume, spirometry, functional residual gas volume, and total lung volume. Pulmonary ventilation refers to the process of gas exchange between the lungs and the outside atmosphere. During pulmonary ventilation, the lung volume changes accordingly with different respiratory dynamics. The lung volume at different moments is measured to evaluate the superiority of lung function. 2, lung perfusion imaging lung perfusion imaging agent is 99mTc-labeled large polymerized human serum protein particles (99mTc-MAA) or 99mTc-labeled microspheres, its diameter is about 10-30μm, a dosage of 0.5-1.5mg, about 100-300,000 particles. When the reagent is injected into the vein, it enters the right heart with the blood, mixes well with the blood in the right heart, and then is perfused into the vascular bed in the lung via the pulmonary artery with the blood flow, and the larger particles can temporarily embolize the pre-capillary vessels of the lung, while the smaller ones embolize the pulmonary capillaries. The amount of (99mTc-MAA) embolization in the vascular bed of each part of the lung is proportional to the local blood perfusion, so the image of the radioactive distribution of (99mTc-MAA) embolization in the lung taken by the scanner or γ camera is the image of blood perfusion in the lung, and the higher radioactivity indicates better local blood perfusion, and the lower indicates poorer blood perfusion. If the radioactivity is absent in a certain area, it means that there is no blood perfusion in that area, which means that the blood vessels perfusing that area are already blocked or occluded. In normal people, the distribution of radioactivity in the lungs is basically uniform. Due to the influence of gravity on blood flow and (99mTc-MAA), the radioactivity in the lung tip is slightly lower when injected in the sitting position and slightly higher in the dorsal lung when injected in the supine position. In one imaging, the number of obstructed vessels only accounts for a few parts per million and a few parts per million of the total number of pulmonary precapillary vessels and capillaries, so it does not cause significant hemodynamic changes and changes in lung function. 3, pulmonary ventilation imaging Pulmonary ventilation imaging is performed by inhalation of 99mTc-labeled aerosol or radioactive gas (e.g. 81s krypton) to show the distribution of pulmonary ventilation. It is used clinically to understand the patency of the airway and the ventilation function of various lung diseases, and can also be used to estimate the local lung ventilation function before and after drug or surgical treatment to guide treatment and observe the efficacy, and is often used in conjunction with pulmonary perfusion imaging for the diagnosis and differential diagnosis of pulmonary embolism and obstructive lung disease.