ABSTRACT
Objective To improve the ability in the diagnosis and differential diagnosis of pulmonary infarction.Methods 20 cases of pulmonary infarction,proved by clinical course and symptoms(such as:acute onset of chest distress,shortness of breath and dyspnea,drastic chest pain,hemoptysis and low fever,etc),all had frontal and lateral X-ray films taken more than once;among them 14 cases had chest CT scans;4 cases had SPECT studies,and 9 cases had echocardiograms.Results 3 cases had pulmonary infarction in the upper lobe;5 cases in the middle lobe;and 12 cases in the lower lobe.Among them,6 cases were of multi-lobar distribution.2 cases had radiological signs of hilar amputation;13 cases showed conicalshaped consolidation of lung segments or lobes;7 cases had mottling shadows;15 cases had pleural effusion;14 cases had localized pleural thickening;2 cases were with cor pulmonale of acute onset;elevation of hemidiaphram was shown in 15 cases,and disciform atelectasis was seen in 5.Conclusion Diagnosis of pulmonary infarction can be made in time and accurately,provided radiological signs are to be dealt with in the light of clinical features.