肺癌孤立性肺结节患者64排螺旋CT扫描影像特点分析

目的 研究64排螺旋CT对肺癌孤立性肺结节(SPN)的诊断价值.方法 选择2015年5月至2019年5月于我院收治的158例经病理证实伴SPN的肺癌患者为对象,按肺癌不同病理类型分为A组(腺癌,112例)、B组(鳞癌,34例)、C组(小细胞癌,12例),均接受64排螺旋CT扫描.比较三组SPN平扫及增强各序列(增强30...

Analysis of 64-slice spiral CT imaging features of solitary pulmonary nodules in patients with lung cancer

Objective To study the diagnostic value of 64-slice spiral CT in solitary pulmonary nodules(SPN)of lung cancer.Methods From May 2015 to May 2019,158 lung cancer patients with SPN confirmed by pathology were enrolled in our hospital.According to different pathological types of lung cancer,they were divided into group A(adenocarcinoma,112 cases),group B(squamous cell carcinoma,34 cases),and group C(small cell carcinoma,12 cases).All patients underwent 64-slice spiral CT scanning.The changes of CT values of three groups of SPN plain scanning and enhancement sequences(enhancement 30,60,90,120,180,300,600 s)were compared,and the enhancement methods,enhancement net value and enhancement rate of the three groups were analyzed,and the relative clearance values and clearance rates of each delayed scanning point(180,300,600s)after the emergence of dynamic enhancement peak of SPN were compared.Results With the prolongation of scanning time,the SPN CT values of the three groups increased first and then decreased significantly,and peaked at 60-180 s.The SPN CT value of group A was significantly higher than that of group B and C(P<0.05),and the SPN CT value of group A and B was significantly lower than that of group C(P<0.05);The value of SPN CT in group C was significantly lower than that in group A and B(P<0.05).The non-uniform enhancement rates of SPN in group A,B and C were 25.0%,64.7%and 50.0%,respectively,and the uniform enhancement rates were 75.0%,35.2%and 50.0%,respectively,among which the difference of SPN enhancement methods in group A and B was statistically significant(P<0.05).Relative clearance value and clearance rate of SPN delayed scanning 180 s after peak dynamic enhancement in group A and B were significantly higher than those in group C(P<0.05);There was no significant difference in the relative clearance value and clearance rate of three groups of SPN delayed scanning for 300 seconds(P>0.05);The relative clearance value and clearance rate of SPN in group B and C were significantly higher than those in group A(P<0.05).Conclusion 64-slice spiral CT can observe the SPN imaging characteristics of lung cancer patients with different pathological types,which is of great significance in the qualitative diagnosis of SPN.