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Diagnostic value of multi-slice spiral CT with multi-planar reconstructions in the bronchial wall thickening and its clinical application
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- Author:
- No author available
- Journal Title:
- CHINESE JOURNAL OF RADIOLOGY
- Issue:
- 4
- DOI:
- 10.3760/j.issn:1005-1201.2004.04.015
- Key Word:
- 肺肿瘤;体层摄影术,X线计算机;图像处理,计算机辅助
Abstract： 目的评价多层螺旋CT多平面重建对支气管壁增厚及显示能力的诊断与鉴别价值.方法 50例拟诊中央型肺癌的患者行多层螺旋CT检查,采用直接增强扫描,在工作站得到支气管的多平面图像(MPR),螺距1.35,重建间隔1 mm,重建层厚1.25 mm.其中42例中央型肺癌与6例支气管内膜结核及2例支气管腔内良性病变均经病理证实.所有图像均由2位放射科医师观察记录肺叶、段支气管管壁的厚度(T)及管壁增厚的长度(L).结果 (1)MPR 42例中央型肺癌的叶、段支气管管壁厚度平均为14.5 mm,管壁增厚长度平均为25.2 mm,其T/L比值为0.58.(2)中央型肺癌支气管管壁厚度及管壁增厚长度MPR与横断面CT之间差异具有显著性意义(分别为P<0.05、 P<0.01).(3)6例支气管内膜结核T/L比值为0.17.(4)42例中央型肺癌与6例支气管内膜结核管壁厚度、管壁增厚长度及T/L比值差异有显著性意义(分别为P<0.05、P<0.01、P<0.01).结论 (1)螺旋CT MPR技术对支气管壁的显示是横断面CT的重要补充.(2)T/L比值有助于中央型肺癌的诊断与鉴别诊断.
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