HRCT靶重建技术在尘肺诊断中的应用价值及影像学表现研究

目的研究HRCT靶重建技术在尘肺诊断中的应用价值及其影像学表现。方法对57例各期煤工尘肺作肺部常规CT扫描，然后在主动脉弓顶、隆突水平、气管分叉下3cm、右膈上2cm及兴趣区加作HRCT，并利用所贮存扫描之原始数据进行靶重建。结果HRCT靶重建放大成像清晰地显示了尘肺的微细病变（1）结节影100%；（2）小叶间隔增厚98.24%；（3）小叶结构异常98.24%；（4）胸膜下结节84.21%；（5）小叶中心型肺气肿63.15%；（6）胸膜下弧线影64.91%；（7）小支气管扩张63.15%；（8）磨玻璃样阴影35.08%；（9）蜂窝状阴影15.78%。并良好的显示了早期病变细节。结论HRCT靶重建技术提高了细节显示，是显示尘肺微细病变有效而可靠的方法，可提供更多的诊断信息。

Practical Value and Imaging Expression of Target Reconstruction Technique of HRCT in the Diagnosis of Pneumoconiosis

Objective:To study the practical value and imaging expression of target reconstruction technique of HRCT in the diagnosis of pneumoconiosis.Methods:Fifty-seven cases with different level type of pneumoconiosis were first examined by routine CT scan,followed by HRCT examination at top of aortic arch,carina of trachea,3 cm below bifurcation of bronchi,and 2 cm above thd right diaphragm.Target reconstruction have been finished using the raw data stored.Results:Target reconstruction photoimages were cleared to display the morphology of delicate lesions of pneumoconiosis:(1)Nodular shape(100%).(2)Interlobular septal thickening(98.24%).(3)Lobular structure abnormality(98.24%).(4)Subpleural nodes (84.21%).(5)Centrilobular emphysema(63.15%).(6)Subpleural line(64.91%).(7)Bronchiectasis(63.15%).(8)Ground-glass opacity(35.08%).(9)Honeycombing(15.78%),and to display earlier period change details.Conclusion:HRCT target reconstruction technique may make lesion dispaly more detail than comventional and high-resblution CT.It is reliable to display the delicate lesions of pneumoconiosis and provide more diagnostic information.