不同窗宽、窗位对胸部低剂量CT肺磨玻璃密度结节显示的
临床研究
侯红军;万绪明;许祖闪
【期刊名称】《中国实用医刊》 【年(卷),期】2014(000)018
【摘要】Objective To analyze the area measurement consistency and repeatability of Ground-Glass Nodules( GGN)in different window width and window level,trying to find a suitable clinical fol-low-up application,with good repeatability and consistency window width and window level setting pro-gram. Methods Forty-nine volunteers met the study criteria were treated with low-dose chest CT scan. All images were reconstructed by 1. 0 mm thickness and were reviewed by two radiologists with 15 years of thoracic CT diagnosis experience independently. For each examinee,the nodules number,distribution and size were recorded,area measurements by using the workstation software with different window width and window level were also recorded on the MPR images. And 13 groups were combined. After these are-a measurements were completed,one of the radiologists re-measured those images two months later. By using the Bland-Altman method to evaluate the consistency and the repeatability between the different ra-diologists in the same time and the same radiologist in different time. Results They were found 52 nod-ules in all images,42
pure GGN and 10 part-solid GGN. It’s had good consistency in different observers in the first 1-10 group and the window width/window level at 1300 Hu,-350 Hu was the best,with the mean deviation was -1. 4 ,95% boundary was( -6. 13 ,3. 21 ). The consistency of the same ob-server at different times in the first 1-10 groups were also good,while the best window width and win-dow level was 1300 Hu,-300 Hu,the mean deviation was -0. 96,95% agreement boundary was( -18. 0,16. 09). Conclusions Window width and window level can be set at 1300 Hu,-350 Hu or 1300 Hu,-300 Hu,in this setting,the edge and the internal display on the GGNs are good,and corre-spondingly the measured results are also with high consistency and repeatability.%目的：寻找适合低剂量胸部CT内肺磨玻璃密度结节（ GGN），临床随访观察及其面积测量一致性和可重复性较好的窗宽、窗位设置方案。方法选取符合入选标准的49名体检者行低剂量胸部CT扫描，由2名具有15年以上胸部诊断经验的放射科医师独立阅读层厚1.0 mm的重建图像，分别记录肺内结节的部位、个数和大小；利用肺结节面积测量软件测量13组不同窗宽、窗位下GNN的面积。2个月后再由其中1名医师重新测量上述数据，分别计算2名医师间测量面积的一致性和同一医师不同时间测量面积的一致性。使用Bland-Altman法对不同医师间及同一医师不同时间测量面积值的一致性进行统计学分析。结果2名医师共发现结节52个，纯GGN 42个，部分实性GGN 10个。不同观察者在第1~10组面积测量的一致性方面均较好，其中窗宽、窗位在1300 Hu、-350 Hu时一致性最好，95%一致性界限为（-6.13，3.21）；同一观察者不同时间
内对面积的测量在第1~10组间一致性也较好，最佳窗宽、窗位为1300 Hu、-300 Hu，95%一致性界限为（-18.0，16.09）。结论窗宽、窗位设定为1300 Hu、-350 Hu或1300 Hu、-300 Hu时GGN边缘和内部显示均较好，所测结果具有较高的一致性和可重复性，适合肺GGN随访观察。 【总页数】4页(1-4)
【关键词】磨玻璃结节;肺;体层摄影术;X线计算机;窗宽;窗位 【作者】侯红军;万绪明;许祖闪
【作者单位】264400 山东省威海市文登中心医院影像科;264400 山东省威海市文登中心医院影像科;264400 山东省威海市文登中心医院影像科 【正文语种】中文 【中图分类】 【文献来源】
https://www.zhangqiaokeyan.com/academic-journal-cn_chinese-journal-practical-medicine_thesis/0201255237251.html 【相关文献】
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不同窗宽、窗位对胸部低剂量CT肺磨玻璃密度结节显示的临床研究
