多层螺旋CT薄层重建对孤立性肺结节的诊断价值  

Solitary Pulmonary Nodule:Diagnosis with Thin-slice Reconstruction of Multi-slice Spiral CT

作　　者：吴海鸰[1] 汪军峰[1] 袁鸿绯[1] 何海清[1] 季文斌[1] 于景明[1] 

机构地区：[1]浙江省台州医院放射科,浙江临海371000

出　　处：《实用放射学杂志》2008年第2期187-189,230,共4页Journal of Practical Radiology

摘　　要：目的评价多层螺旋CT薄层重建在孤立性肺结节诊断中的价值。方法回顾性分析55例临床病理证实的孤立性肺结节病例,行多层螺旋CT扫描,后进行10.0 mm、5.0 mm、2.5 mm、1.25 mm重建。评价不同层厚影像对孤立性肺结节CT征象检出率及薄层CT与常规CT对孤立性肺结节良恶性诊断效能,结果采用χ2检验进行分析。结果在SPN CT征象检出上,1.25 mm薄层CT优于2.5 mm及常规10.0 mm CT(P<0.05);对肺内结节的良恶性鉴别评价方面,1.25 mm薄层CT诊断假阴性率<10.0mm常规CT(χ2=24.856,P<0.05)。结论多层螺旋CT薄层重建可提高SPN的征象检出率,降低诊断小肺癌诊断的假阴性率。Objective To study the diagnostic value of thin - slice reconstruction of multi - slice spiral CT（MSCT） in solitary pulmonary nodule（ SPN）. Methods 55 cases of SPN confirmed by pathology were analysed retrospectively. All cases underwent chest MSCT scan and thin - slice reconstruction images were obtained at 10.0 mm,5.0 mm ,2.5 mm and 1.25 mm thickness. The detecting rate of CT findings of SPN on different thickness CT images was evaluated, and the effect of thin - slice images and traditional CT scan in diagnosing benign and malignant pulmonary nodules x^2 test. Results （ 1 ） In detecting rate of CT findings of SPN, the thin - slice （ 1.25 mm ） reconstruction was better than traditional CT （ P 〈 0.05 ） ; （ 2 ） In distinguishing benign and malignant pulmonary nodules, the false - negative rate of small peripheral lung cancer in the traditional CT scan was high than that in the thin - slice reconstruction （ P 〈 0.05 ）. Conclusion Thin - slice reconstruction of multi - slice spiral CT can improve the detecting rate of SPN signs and reduces the false - negative rate of small peripheral lung cancer.

关 键 词：肺 孤立性肺结节 体层摄影术 X线计算机 

分 类 号：R563[医药卫生—呼吸系统] R814.42[医药卫生—内科学]