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The study of positive probability discriminant method in the differential diagnosis of pulmonary nodules by high resolution CT

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Author:
No author available
Journal Title:
CHINESE JOURNAL OF RADIOLOGY
Issue:
1
DOI:
10.3760/j.issn:1005-1201.2005.01.007
Key Word:
硬币病变,肺;体层摄影术,X线计算机;诊断,鉴别;病理学;对比研究

Abstract: 目的利用高分辨率CT(HRCT)分析肺结节样病灶的影像学特征,结合正向概率判别法探讨对肺结节鉴别诊断有价值的影像学征象. 方法搜集经手术病理证实的120例肺结节,其中周围型肺癌、炎性结节、结核球及肺内良性肿瘤各30例,所有的患者均于术前行常规平扫和增强扫描,并结合HRCT扫描.采用正向概率判别法对结节病灶常见的CT征象进行分析总结,并转化为概率值后判定结节的性质,为鉴别诊断提供帮助. 结果正向概率判别法对周围型小肺癌、炎性结节和结核球的总体诊断正确率(78.9%)较常规阅片法(68.9%)为高,两者比较差异有统计学意义(χ2=4.27,P<0.05).结论在HRCT扫描的基础上对肺结节样病灶进行概率判别分析法有助于提高诊断正确率.

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