ABSTRACT
Objective To measure the parameters of bronchus and peripheral pulmonary small vessel in the early simple pulmonary contusion, and to explore the changes of bronchial and pulmonary small blood vessels after pulmonary contusion.Methods The chest CT images of 30 patients with early simple pulmonary contusion were collected retrospectively,images were then automatically segmented using FACT-Digital lung TM software.Ipsilateral,contralateral bronchial parameters (luminal cross-sectional area,wall thickness,internal and external diameter,inner and outer circumference and luminal density)and pulmonary small vessel parameters (number of vessels in the visual area,total blood vessel area)for 33 pulmonary contusion cases were measured respectively,finally,correlation between lung contusion area and bronchial and small vessel parameters were analyzed.Results Ipsilateral bronchial parameters (luminal cross-sectional area, wall thickness,internal and external diameter,inner and outer circumference and luminal density)and pulmonary small vessel parameters (number of vessels in the visual area,total blood vessel area)were greater than those in the contralateral(P<0.05).The area of pulmonary contusion was not associated with bronchial parameters nor pulmonary small vessel parameters.Conclusion Quantitative CT analysis can intuitively show the changes of bronchial and pulmonary small blood vessels in patients with early simple pulmonary contusion.