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目的探讨肺慢性炎症及肺癌支气管动脉多层螺旋CT血管成像(MSCTA)的影像学特点,为肺慢性炎症与肺癌诊断、鉴别诊断提供依据。方法收集本院接受多层螺旋CT胸部增强扫描患者108例,根据纤维支气管镜、经皮穿刺活检及临床其他综合检查分为正常对照组、慢性肺炎组及肺癌组。原始扫描数据传至后处理工作站,通过横断位、容积再现(VR)、多平面重建(MPR)及最大密度投影(MIP)等技术,分别观察各组支气管动脉形态、走行及其与周围组织的关系。结果三组病例VR像支气管动脉显示率分别为72.4%、83.6%和86.4%,MIP像分别为82.5%、90.3%和93.7%,MPR像为80.5%、89.6%和91.3%,慢性炎症组及肺癌组均高于对照组(P<0.05)。三组支气管动脉内径分别为1.57±0.02mm、2.28±0.04mm和2.04±0.03mm,各组间差异有统计学意义(P<0.05)。结论支气管动脉在肺慢性炎症和肺癌时CTA影像表现存在一定差异,在二者鉴别诊断中具有一定价值。
Objective To investigate the imaging features of chronic lung inflammation and multi-slice spiral CT angiography (MSCTA) in lung cancer and provide basis for the diagnosis and differential diagnosis of lung chronic inflammation. Methods We collected 108 patients undergoing multi-slice spiral CT enhanced chest CT scans in our hospital. The patients were divided into normal control group, chronic pneumonia group and lung cancer group according to fibrobronchoscopy, percutaneous biopsy and other clinical comprehensive tests. The original scan data was transmitted to the post-processing workstation. The morphological features of the bronchial artery, the movement of the bronchial artery, and the relationship with the surrounding tissue in each group were observed by transverse displacement, volume rendering (VR), multiplanar reconstruction (MPR) and maximum density projection relationship. Results The bronchial arteries of the three groups showed 72.4%, 83.6% and 86.4% of the bronchial arteries respectively. The MIP images were 82.5%, 90.3% and 93.7% respectively. The MPR images were 80.5%, 89.6% and 91.3% Lung cancer group were higher than the control group (P <0.05). The bronchial artery diameters of the three groups were 1.57 ± 0.02mm, 2.28 ± 0.04mm and 2.04 ± 0.03mm, respectively. The differences among the three groups were statistically significant (P <0.05). Conclusions The bronchial artery has some differences in CTA imaging between chronic lung inflammation and lung cancer, and it has some value in the differential diagnosis between the two.