能谱CT在肺癌淋巴结转移诊断中的临床应用价值研究

Energy Spectrum CT Clinical Application Value in The Diagnosis of Lung Cancer Lymph Node Metastasis

目的:研究能谱CT诊断肺癌淋巴结转移的临床价值。方法:选取我院2016年5月至2017年4月行能谱CT检查并经病理证实的中央型小细胞肺癌伴纵隔淋巴结肿大患者35例、肺鳞癌伴纵隔或肺门淋巴结肿大患者20例,通过CT值、碘含量、有效原子序数等参数的对比,分析能谱CT的诊断情况。结果:小细胞肺癌组和转移性淋巴结组的CT值差别不大(P>0.05),其与反应增生性淋巴结组的CT值有较大差别(P<0.05);反应增生性淋巴结组有效原子序数、碘含量高于其他两组(P<0.05);碘含量、有效原子序数的阳性及阴性预测值无明显差别,转移性淋巴结诊断的准确率为85.7%,反应增生性淋巴结诊断的准确率为68.6%。结论:能谱CT可为肺癌淋巴结转移的诊断与鉴别诊断提供依据,具有较高的临床应用价值。

Objective：to study the energy spectrum the clinical value of CT in the diagnosis of lung cancer lymph node metastasis.Methods：from May 2016 to April 2016 line spectrum confirmed by pathology and CT examination of central type of 35 patients with small cell lung cancer with mediastinal lymph node enlargement,pulmonary squamous carcinoma patients with mediastinal or hilum lymph node enlargement with 20 cases,by CT value,iodine,effective atomic number of parameters,such as contrast,analysis of energy spectrum CT diagnosis.Results：small cell lung cancer and metastatic lymph node groups of CT value difference（ P〉0.05）,with the reaction of hyperplastic lymph node groups CT value has great difference（ P〈0.05）; reaction hyperplastic lymph node set of effective atomic number,iodine content is higher than the other two groups（ P〈0.05）; Iodine content,effective atomic number of positive and negative predictive value has no obvious difference,the correct rate of diagnosing metastatic lymph nodes was 85.7%,the reaction hyperplastic lymph node diagnostic accuracy was 68.6%.Conclusion：the energy spectrum CT for the diagnosis and differential diagnosis of lymph node metastasis of lung cancer,has high clinical value.