CT动态增强扫描在诊断周围型肺癌中临床应用价值探讨  

Clinical Application Value of CT Dynamic Enhancement in the Diagnosis of Peripheral Lung Cancer

作　　者：卫旭瑛 白峥嵘 陈艳[1] 郭轶[3] WEI Xu-ying;BAI Zheng-rong;CHEN Yan;GUO Yi(Department of Radiology,The Second Affiliated Hospital of Hainan Medical College,Haikou 570102,Hainan Province,China;Department of Radiology,Yan'an People's Hospital,Yan'an 716000,Shaanxi Province,China;Department of Radiology,Chongqing Emergency Medical Center,Chongqing 400014,China)

机构地区：[1]海南医学院第二附属医院放射科,海南海口570102 [2]陕西省延安市人民医院放射科,陕西延安716000 [3]重庆市急救医疗中心放射科,重庆400014

出　　处：《中国CT和MRI杂志》2021年第2期53-55,共3页Chinese Journal of CT and MRI

基　　金：海南省自然科学基金(20158324)。

摘　　要：目的探讨应用CT动态增强在诊断周围型肺癌中的临床应用价值。方法回顾分析本院2018年4月至2019年3月收治的60例周围型肺癌患者的临床资料。观察CT平扫及增强扫描的影像特点,测量孤立性肺结节平扫及增强后CT值。依据增强后各时期CT均值和平扫CT值计算孤立性肺结节的最大增强值。结果周围型肺癌的最大CT强化均值为(71.59±17.61)HU,周围型肺癌增强后除15s之外,各期CT至与平扫比较差异均具有统计学意义(P<0.05)。周围型肺癌增量峰值开始于75s,至195s最高。其中,15s时增强值与75、135、195s相比均具有统计学意义(P<0.05)。但75、135、195s增强值两两对比,差异均无统计学意义。CT平扫定性正确率根据有无分叶、毛刺、空泡征、血管连接征及胸膜凹陷征为85.00%,增强扫描后定性正确率为98.33%,显著高于CT平扫,两者比较差异具有统计学意义(P<0.05)。结论MSCT动态增强扫描可清楚显示周围型肺癌的影像学特征,有助于提高对周围型肺癌的检出率,为临床医师提供了重要的参考。Objective To explore the clinical application significance of CT dynamic enhancement in diagnosing peripheral lung cancer.Methods The clinical data of 60 patients with peripheral lung cancer admitted to our hospital from April 2018 to March 2019 were retrospectively analyzed.The imaging features of CT plain scan and enhanced scan were observed,and the CT values of solitary pulmonary nodule after plain scan and the enhanced scan was measured.The maximum enhancement value of solitary pulmonary nodules was calculated according to the CT mean of each period after enhancement and the plain CT value.Results The maximum mean of CT enhancement of peripheral lung cancer was(71.59±17.61)HU.After the enhancement of peripheral lung cancer,except for 15s,the difference between CT value and plain scan was statistically significant(P<0.05).The incremental peak of peripheral lung cancer began at 75s and was the highest at 195s.Among them,the difference between the enhancement value at 15s and 75s,135s,195s was statistically significant(P<0.05).However,the enhancement values of 75s,135s and 195s were compared in pairs,and the differences were not statistically significant.According to the presence or absence of lobulation,burr,vacuole sign,vascular connection sign,and pleural indentation,the qualitative correct rate of CT plain scan was 85.00%,and the qualitative correct rate of the enhanced scan was 98.33%,which was significantly higher than that of CT scan.The difference was statistically significant(P<0.05).Conclusion MSCT dynamic enhanced scan can clearly show the imaging features of peripheral lung cancer,which is beneficial to improve the detection rate of peripheral lung cancer,and provides an important reference for clinicians.

关 键 词：动态CT增强 周围型肺癌 断层摄影术 临床价值 

分 类 号：R445.3[医药卫生—影像医学与核医学] R734.2[医药卫生—诊断学]