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首页> 外文期刊>Acta Radiologica Open >Comparison of breast density assessments according to BI-RADS 4th and 5th editions and experience level:
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Comparison of breast density assessments according to BI-RADS 4th and 5th editions and experience level:

机译：根据Bi-Rads第4和第5版和经验水平的乳房密度评估比较：

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Background Breast density is an important variable that can change the sensitivity of mammography. It can be analyzed with using the 4th and 5th editions of the Breast Imaging and Reporting Data System (BI-RADS) recommendations from the American College of Radiology (ACR). Purpose To define the intra- and inter-reader agreement levels of breast density assignments performed by readers with different experience levels using two versions of BI-RADS. Material and Methods The breast density assessments of 330 women were conducted by two readers with different levels of experience (one breast radiologist and one resident). Each reader independently defined the breast density four times—twice using the 4th edition and twice using the 5th edition. Assessments were analyzed on four- and two-category scales. Results The intra-reader agreement of the breast radiologist for the 4th and 5th editions of BI-RADS was almost perfect (k?=?0.90 and k?=?0.87, respectively.) The resident had similar results (k?=?0.88 and k?=?0.87, respectively). The agreement between the breast radiologist and resident for the 4th and 5th edition of BI-RADS was substantial (k?=?0.70 and k?=?0.63, respectively). There was a statistically significant difference with the two-category scale analysis between the dense and non-dense for both readers and versions of BI-RADS (McNemar’s test, P??0.001). Conclusion Although there were high intra- and inter-reader agreement levels when using both versions, the percentage of women having dense breasts increased when using the 5th edition, and the difference was statistically significant. There were no differences found with regard to the readers’ level of experience in all analyses.
机译：背景技术乳房密度是可以改变乳房X光检查的敏感性的重要变量。可以使用美国放射学院（ACR）的乳房成像和报告数据系统（BI-RADS）建议的第4和第5版分析它。目的是使用两个版本的BI-RADS定义具有不同体验水平的读者和读者互相互相协议的乳房密度分配水平。材料和方法330名妇女的乳房密度评估由两个读者进行，具有不同程度的经验（一个乳房放射学家和一个居民）。每个读者独立地定义了乳房密度四次，使用第4版和使用第5版的两次。在四个和两种类别的尺度上分析了评估。结果乳腺放射科学家对Bi-rad的第4和第5版的读者内协议几乎是完美的（k？= 0.90和k？=？0.87分别。）居民具有类似的结果（K？= 0.88和k？=？0.87分别）。乳房放射科学家和居民在第4和第5版的Bi-rad之间的协议很大（K？=Δ0.70和k？= 0.63）。对读者和Bi-Rads的读者和版本的密集和不合密度之间的两类比例分析有统计学意义差异（McNemar的测试，P？<0.001）。结论虽然在使用这两个版本时，读者和读者间协议水平高，但在使用第5版时，致密乳房的妇女的百分比增加，差异是统计学意义。关于读者的所有分析中的读者经验水平没有差异。

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