双能CT对孤立性肺结节的诊断价值  

Value of dual-energy CT in diagnosis of solitary pulmonary nodule

作　　者：章跃武 吴渭贤[2] 余新春 刘威[2] 朱希松[2] 张露钢[2] 徐铁铮 田明庆 陈晓萍 

机构地区：[1]衢州市妇幼保健院放射科,浙江324000 [2]衢州市人民医院放射科,浙江324000 [3]衢州市妇幼保健院病理科,浙江324000 [4]衢州市妇幼保健院胸外科,浙江324000 [5]衢州市妇幼保健院呼吸内科,浙江324000

出　　处：《放射学实践》2011年第2期176-179,共4页Radiologic Practice

基　　金：浙江省衢州市科技计划项目(20041095)

摘　　要：目的:探讨双能CT对孤立性肺结节(SPN)的诊断价值。方法:采用双能CT(管电压为80和140 kVp)对水模、体模、47例平扫CT无明显钙化的SPN(恶性31例,良性16例)进行扫描,测量其CT值变化,计算病灶内钙质含量,比较良恶性SPN的CT值变化及钙质含量。结果:良性SPN的CT值变化中位数为5 HU,恶性SPN为4 HU;良恶性SPN的CT值变化[良性(5.9±16.1)HU,恶性(4.7±11.2)HU]及钙质含量[良性(12.1±11.7)mg/ml,恶性(10.5±9.2)mg/ml]差异均无显著性意义(P>0.05)。结论:对于常规平扫CT无明显钙化的SPN,双能CT并未能为其定性诊断提供更多帮助。Objective：To investigate the value of dual-energy CT in the diagnosis of solitary pulmonary nodule（SPN）.Methods：Dual-energy CT（140kVp,80kVp） was performed in water phantom,body phantom and 47 patients with SPN（malignant 31,benign 16） without obvious calcification on plain CT.The CT values were measured and calium contents were calculated.The results were compared between benign and malignant SPN.Results：The median of CT values was 5HU in benign SPN,while 4HU in malignant SPN.Neither mean CT values [benign（5.9±16.1）HU versus malignant（4.7±11.2）HU] nor calcium content [benign（12.1±11.7）mg/ml versus malignant（10.5±9.2）mg/ml] was significantly different between benign and malignant SPN（P0.05）.Conclusion：Dual-energy CT does not appear to be helpful in characterization of SPN without obvious calcification on plain CT.

关 键 词：肺结节 孤立性 体层摄影术 X线计算机 

分 类 号：R816.4[医药卫生—放射医学]