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@#The development and evolution of the concept of quality of life(QOL)is introduced. Focuses on the quality of life scale in stroke patients with application and analyze the advantages and disadvantages of various scale.
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Objective To improve the diagnostic accuracy of silicosis by investigating its CT appearances.Methods CT appearances in 45 patients with silicosis were analyzed retrospectively.All these patients were male,aged from 42~71 years(mean age,56 years old),including stageⅠin 5,stageⅡin 18 and stage Ⅲ in 22 cases.All patients underwent plain CT scan,CT findings of lung parenchyma,hilus, mediastinum,and pleura were analysed.Results CT appearances of silicosis included:(1)Lung parenchyma:①All cases showed diffuse small nodules;②Progressive massive fibrosis were found in 16 in stageⅡ(16/18) and in 22 in stageⅢ(22/22);③All cases showed fibrous strips and reticular opacities.Central fibers and vascular bundles thickening were found in 2 in stageⅡ(2/18) and in 5 in stageⅢ(5/22);8 in stageⅢ(8/22) cases showed obvious interlobular septal thickening and subpleural lines;④ 3 in stageⅡ(3/18) and 8 in stageⅢ(8/22)patients showed emphysema.(2)All cases except 4 in stageⅠshowed enlarged hilar and mediastinal lymph nodes,which contained silicon powder;2 in stageⅡ(2/18)and 9 in stageⅢ(9/22) patients showed fleck,mulberry,eggshell calcifications in the hilar lymph nodes.(3)Pleural thickening was showed in 6 in stageⅡ(6/18) and 13 in stageⅢ(13/22)cases,some of which showed typical bandlike pleural thickening.Conclusion CT features of silicosis in combination with clinical history will lead to accurate diagnosis.