Lung cancer is the most common cancer worldwide. In the United States, it causes more cancer-related deaths than the next four causes （breast cancer, prostate cancer, colon cancer, and pancreatic cancer） of cancer-r...Lung cancer is the most common cancer worldwide. In the United States, it causes more cancer-related deaths than the next four causes （breast cancer, prostate cancer, colon cancer, and pancreatic cancer） of cancer-related mortality combined （1）. About 30% of people have already progressed to stage III lung cancer and 40% to stage IV at the time they are diagnosed （2）. Although chest X-ray and sputum cytology, when applied in health check-ups, can identify some relatively small tumors, they are not able to lower the overall mortality （3）. More recently,展开更多
Objective：To research on consistency of identifying solitary pulmonary masses with CT. Methods：Three observers with different working backgrounds in imaging diagnosis individually interpreted the same group images o...Objective：To research on consistency of identifying solitary pulmonary masses with CT. Methods：Three observers with different working backgrounds in imaging diagnosis individually interpreted the same group images of solitary pulmonary mass, by 12 indexes of objective signs. The differences in interpretation resulted in ante- and post-interpretations were assessed by the x^2 test. The agreement of two interpretations from the same observer was confirmed with the kappa test. A double-blind method was adopted for analysis. Results：The agreement rates of ante- and post-interpreting from the three observers were respectively 82.65%（486/588） 80.27%（472/ 588） and 84.86% （499/588） while their interpreting results were generally accordant without significant difference（x^2 = 4.975, df= 2, P= 0.083） however there was difference between the observer 2 and observer 3（x^2 = 4.875, df= 1, P = 0.027）. There were five indexes with k 〉 0.40 of ante- and post-interpreting results of the three observers, including clarity of nodule borderline, presence of sentus, uniformity of density, existence of cavity and calcification in pathological region, among them, the agreement rate of interpreting borderline and cavity was higher（k 〉 0.07）; the blood vessel convergence poorer（0 〈 k ≤ 0.40）; the other six CT signs of interpretation were slightly different. Conclusion：The ability to identify solitary pulmonary mass was inconsistent, and needs to be improved further.展开更多
文摘Lung cancer is the most common cancer worldwide. In the United States, it causes more cancer-related deaths than the next four causes （breast cancer, prostate cancer, colon cancer, and pancreatic cancer） of cancer-related mortality combined （1）. About 30% of people have already progressed to stage III lung cancer and 40% to stage IV at the time they are diagnosed （2）. Although chest X-ray and sputum cytology, when applied in health check-ups, can identify some relatively small tumors, they are not able to lower the overall mortality （3）. More recently,
文摘Objective：To research on consistency of identifying solitary pulmonary masses with CT. Methods：Three observers with different working backgrounds in imaging diagnosis individually interpreted the same group images of solitary pulmonary mass, by 12 indexes of objective signs. The differences in interpretation resulted in ante- and post-interpretations were assessed by the x^2 test. The agreement of two interpretations from the same observer was confirmed with the kappa test. A double-blind method was adopted for analysis. Results：The agreement rates of ante- and post-interpreting from the three observers were respectively 82.65%（486/588） 80.27%（472/ 588） and 84.86% （499/588） while their interpreting results were generally accordant without significant difference（x^2 = 4.975, df= 2, P= 0.083） however there was difference between the observer 2 and observer 3（x^2 = 4.875, df= 1, P = 0.027）. There were five indexes with k 〉 0.40 of ante- and post-interpreting results of the three observers, including clarity of nodule borderline, presence of sentus, uniformity of density, existence of cavity and calcification in pathological region, among them, the agreement rate of interpreting borderline and cavity was higher（k 〉 0.07）; the blood vessel convergence poorer（0 〈 k ≤ 0.40）; the other six CT signs of interpretation were slightly different. Conclusion：The ability to identify solitary pulmonary mass was inconsistent, and needs to be improved further.
