摘要
目的:探讨宝石能谱CT在早期肺癌筛查中的应用价值。方法:回顾性分析常年吸烟或患有慢性阻塞性肺疾病的体检者126例,同期进行GE lightspeedQX/I多层螺旋CT机及宝石能谱CT机扫描,检出结果分为对照组和实验组,分别统计两组检出率并作相关性对比分析及统计学处理。结果:对照组低剂量CT结节检出18例阳性,56个结节性病灶,28个伴有结节钙化,经手术证实恶性结节3例,体检检出率2.3%;支气管病变检出管壁狭窄增厚5例,肺部斑片状阴影3例。实验组宝石能谱CT检出31例阳性,82个结节性病灶,31个伴有结节钙化,经手术证实恶性结节5例,体检检出率3.9%;支气管病变检出管壁狭窄增厚11例,肺部斑片状阴影5例,阳性结果检出率明显高于对照组,而体检者辐射剂量平均值对照组为0.76 mSv,实验组为0.73 mSv,两者相比无明显差异。结论:宝石能谱CT机对高危人群进行早期肺癌的筛查,既能做到和低剂量CT扫描一样的最优化辐射防护,而且能提高图像质量,提升阳性检出率,不失为一种筛查早期肺癌的重要方法。
Objective To discuss the application value of the gem energy spectrum CT for the screening of the early lung cancer.Methods 126 cases of perennial smoker or with chronic obstructive pulmonary disease were analyzed retrospectively,who were diagnosed by GE lightspeedQX/I multilayer spiral CT and gem energy spectrum CT.The 126 cases were divided into experiment group and control group,with the detection rates summed up and correlation analysis and statistical processing performed.Results By GE lightspeedQX/I multilayer spiral CT,in the control group 18 cases were diagnosed with early lung cancer,56 ones with nodular focus,5 ones with stenosis and thickening of bronchial wall,3 cases with pulmonary mottling,and 28 ones with nodular calcification,of which,3 ones were detected with malignant nodule and the detection rate was 2.3%.By gem energy spectrum CT,in the experiment group 31 cases were diagnosed with early lung cancer,82 ones with nodular focus,11 ones with stenosis and thickening of bronchial wall,5 cases with pulmonary mottling,and 31 ones with nodular calcification,of which,5 ones were detected with malignant nodule and the detection rate was 3.9%.The detection rate of the experiment group was higher than that of the control group.The mean radiation dose of the control group was 0.76mSv and that of the experiment group was 0.73mSv,with no statistical difference.Conclusion Gem energy spectrum CT,when used for the screening of early lung cancer,is gifted with the radiation protection as that of the low-dose CT,with the image quality and positive detection rate enhanced.
出处
《医疗卫生装备》
CAS
2011年第12期64-65,78,共3页
Chinese Medical Equipment Journal
关键词
宝石能谱CT
筛查
早期肺癌
gem energy spectrum CT
screening
early lung cancer
