中国实用医刊
中國實用醫刊
중국실용의간
CENTRAL PLAINS MEDICAL JOURNAL
2014年
18期
1-4
,共4页
磨玻璃结节%肺%体层摄影术%X线计算机%窗宽%窗位
磨玻璃結節%肺%體層攝影術%X線計算機%窗寬%窗位
마파리결절%폐%체층섭영술%X선계산궤%창관%창위
Ground-glass nodules%Pulmonary%Tomography%X-ray computed%Window width%Wndow level
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。
目的：尋找適閤低劑量胸部CT內肺磨玻璃密度結節（ GGN），臨床隨訪觀察及其麵積測量一緻性和可重複性較好的窗寬、窗位設置方案。方法選取符閤入選標準的49名體檢者行低劑量胸部CT掃描，由2名具有15年以上胸部診斷經驗的放射科醫師獨立閱讀層厚1.0 mm的重建圖像，分彆記錄肺內結節的部位、箇數和大小；利用肺結節麵積測量軟件測量13組不同窗寬、窗位下GNN的麵積。2箇月後再由其中1名醫師重新測量上述數據，分彆計算2名醫師間測量麵積的一緻性和同一醫師不同時間測量麵積的一緻性。使用Bland-Altman法對不同醫師間及同一醫師不同時間測量麵積值的一緻性進行統計學分析。結果2名醫師共髮現結節52箇，純GGN 42箇，部分實性GGN 10箇。不同觀察者在第1~10組麵積測量的一緻性方麵均較好，其中窗寬、窗位在1300 Hu、-350 Hu時一緻性最好，95%一緻性界限為（-6.13，3.21）；同一觀察者不同時間內對麵積的測量在第1~10組間一緻性也較好，最佳窗寬、窗位為1300 Hu、-300 Hu，95%一緻性界限為（-18.0，16.09）。結論窗寬、窗位設定為1300 Hu、-350 Hu或1300 Hu、-300 Hu時GGN邊緣和內部顯示均較好，所測結果具有較高的一緻性和可重複性，適閤肺GGN隨訪觀察。
목적：심조괄합저제량흉부CT내폐마파리밀도결절（ GGN），림상수방관찰급기면적측량일치성화가중복성교호적창관、창위설치방안。방법선취부합입선표준적49명체검자행저제량흉부CT소묘，유2명구유15년이상흉부진단경험적방사과의사독립열독층후1.0 mm적중건도상，분별기록폐내결절적부위、개수화대소；이용폐결절면적측량연건측량13조불동창관、창위하GNN적면적。2개월후재유기중1명의사중신측량상술수거，분별계산2명의사간측량면적적일치성화동일의사불동시간측량면적적일치성。사용Bland-Altman법대불동의사간급동일의사불동시간측량면적치적일치성진행통계학분석。결과2명의사공발현결절52개，순GGN 42개，부분실성GGN 10개。불동관찰자재제1~10조면적측량적일치성방면균교호，기중창관、창위재1300 Hu、-350 Hu시일치성최호，95%일치성계한위（-6.13，3.21）；동일관찰자불동시간내대면적적측량재제1~10조간일치성야교호，최가창관、창위위1300 Hu、-300 Hu，95%일치성계한위（-18.0，16.09）。결론창관、창위설정위1300 Hu、-350 Hu혹1300 Hu、-300 Hu시GGN변연화내부현시균교호，소측결과구유교고적일치성화가중복성，괄합폐GGN수방관찰。
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.
