“时间-密度曲线”在肺孤立性结节鉴别诊断中的价值  

Value of time-density curve in the different diagnosis of solitary pulmonary nodule

作　　者：韩向君[1] 张铎[1] 孟恒[1] 陈彪[1] 

机构地区：[1]北华大学医学院附属医院,吉林吉林132011

出　　处：《吉林医学》2002年第6期336-338,共3页Jilin Medical Journal

摘　　要：目的 :探讨“时间 -密度曲线”在肺内孤立性结节的诊断价值。方法 :对 82例肺内孤立性结节病灶 ,进行动态和小螺旋靶增强扫描 ,采用层厚 3mm ,螺距 1～ 1 5 ,10 0ml造影剂以 2 5ml/s速度静脉注射。分别于延时后 1min ,2min ,3min ,5min四个时相扫描 ,并测量病灶CT值 ,绘制“时间 -密度曲线”。结果 :不同性质的病灶增强值不同 ,差异有显著性 (P <0 0 5 )。肺癌的增强值 4 0 5± 4 9Hu ,低度恶性肿瘤增强值 34 3± 5 8Hu ,良性肿瘤增强值 11 0± 5 4Hu ,结核瘤增强值 8 2± 2 4Hu ,炎性假瘤增强值 5 4 4± 6 0Hu。结论 :“时间 -密度曲线”分析在肺内孤立性结节的鉴别诊断中有重要的诊断意义 ,在扫描中 ,根据病灶的大小选择不同的扫描方式 。Objective To explore value of time-density curve in the different diagnosis of solitary pulmonary nodule.Method 82 cases with solitary pulmonary nodule were dynamic scaning and small spiral target enhancement scaning.Slice 3mm,pitch 1～1 5.After injected 100ml contrast material at 2 5ml/s delayed 1min,2min,3min,5min four phase,scaning and measureing density of CT and describing time-density curve.Results There were different enhancement density of CT in different kinds of solitary pulmonary nodule and obviously different each other( P <0 05).enhancement degree of lung cancers was 40 5±4 9Hu,low degree of bad tumor was 34 3±5 8Hu,good tumor was 11 0±5 4Hu,tuberculomas 8 2±2 4Hu,granuloms was 54 4±6 0Hu.Conclusion Analyse of time-density curve had important diagnose significance in the different diagnosis of solitary pulmonary nodule.Choiced different scaning way base on solitary pulmonary nodule's range was improved diagnose base.

关 键 词：鉴别诊断 肺孤立性结节 螺旋扫描 动态扫描 时间-密度曲线 

分 类 号：R816.4[医药卫生—放射医学]