上腹部CT扫描调节骨窗肺窗的意义

目的 :探讨上腹部CT扫描调节骨窗肺窗的意义。材料和方法 :在影像工作站 ,有无癌症病史者各 10 0例的CT图像进行骨窗肺窗的调节。结果 :调窗后 ,癌症病史组 ,病变特性或特征增加及实质性影响最后诊断的变化有显著性差异 ;无癌症病史组 ,病变特性或特征增加及实质性影响最后诊断的变化无显著性差异。癌症病史组的差异大 ,无癌症病史组的差异小。结论 :CT多窗宽窗位调节可增加病变特性的显示和诊断的准确性 ;上腹部CT扫描 ,癌症病史阳性者或临床有高度可疑指数者进行多窗宽窗位调节可提高诊断效益 ,无癌症病史者或临床无可疑指数者不需要进行多窗宽窗位调节。

Value of Bone and Lung Window Settings for Soft-Copy Interpretation of Upper Abdominal CT

Purpose:To assess the value of bone and lung window settings for soft copy interpretation of upper abdominal CT. Materials and Methods:100 patients with known malignancy and 100 patients without known malignancy were interpreted with bone and lung windows by us using soft copy workstation. Results:After the window level and width settings, the group of patients with known malignancy, conspicuity or characterization of abnormalities were greatly improved; The group of patients without known malignancy, conspicuity or characterization of abnormalities were less improved. The difference of the former was great, the difference of the later is small. Conclusion:Reviewing multiple CT window and level settings might increase diagnostic accuracy; On upper abdominal CT scans, when the use of additional settings is taken, the diagnostic accuracy is improved for patients with malignancy or high suspicious malignancy and is not improved for patients without malignancy or high suspicious malignancy.