肺高分辨力CT“马赛克”衰减的表现及其诊断价值

目的:探讨肺高分辨力CT“马赛克”衰减的表现及其临床应用价值。材料和方法:回顾性分析45例HRCT的“马赛克”衰减的表现。结果:28例以间质病变为主中,“马赛克”衰减外周分布27例、边界模糊22例,均伴有间质病变征象;以肺实质病变为主7例中,弥漫分布5例,边界清楚5例;慢性阻塞性肺疾病10例中,弥漫分布和伴有小血管增粗7例,边界清楚6例。结论:虽然HRCT上“马赛克”衰减征象是非特异性征象,但可早期提示小气道病变,并可通过对其形态学特点的分析缩小临床拟诊范围,具有重要临床价值。

Mosaic Attenuation on Lung HRCT and Its Clinical Application

Purpose: To study the HRCT features of mosaic attenuation and its value in clinical application. Materials and Methods: Forty-five cases with lung disease, in which mosaic attenuation were found on HRCT ,were analyzed retrospectively. Results: In these 45 cases, 28 showed interstitial disease, in which mosaic attenuation distributed peripherally in 27 and 22 with an ill-defined margin. In 7 cases of parenchymal diseases, 5 are diffuse distribution and 5 have a well-defined margin. In 10 cases of chronic obstructive airway diseases, 7 are diffuse distribution and 6 have a well-defined margin, all have vessels dilatation. Conclusion: [WTBZ]Although mosaic attenuation is a nonspecific findings on HRCT, it can clue on small airway diseases and one can analyse the morphological characteristics of mosaic attenuation and associated HRCT findings to narrow the range of diagnostic possibilities , so it is of great value in clinical application.