Computerized bone densitometric analysis: Operator-dependent errors
Computerized bone densitometric analysis: Operator-dependent errors
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DOI：
10.1148/radiology.211.2.r99ma55467
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发表时间：
1999-05-01
期刊：
影响因子：
19.7
通讯作者：
Haramati, N
中科院分区：
文献类型：
--
作者：
Staron, RB;Greenspan, R;Haramati, N
目的：确定双x线吸收法中操作人员相关数据分析误差的性质和相对频率。材料和方法：在40个月的时间里，由11名技术人员使用标准技术和软件对前臂、股骨颈和腰椎进行了2528次双x线吸收测量检查。每个分析都由放射科医生审查；错误被记录和纠正。结果：前臂分析无误差。有24例（0.9%）股骨颈分析错误，其中23例是由于分析区放置错误。有33例（1.3%）脊柱分析错误，其中24例是由于椎间盘间隙标记物的错位造成的。股骨和脊柱的分析错误导致6例误诊（0.2%）。结论：分析错误引起的误诊是罕见的。股骨颈分析的错误很容易发现，但准确的脊柱分析依赖于准确识别椎体终板和后部元件。尽管如此，如果有一位熟悉相关解剖、适当分析技术和影响分析准确性的因素（如伪影）的监督医生对分析进行审查和解释，这些潜在的严重错误是可以被发现和纠正的。
PURPOSE: To determine the nature and relative frequency of operator-dependent data analysis errors in dual x-ray absorptiometry.MATERIALS AND METHODS: Over 40 months, 2,528 dual x-ray absorptiometric examinations of the forearm, femoral neck, and lumbar spine were performed by 11 technologists by using standard techniques and software. Each analysis was reviewed by a radiologist; errors were recorded and corrected.RESULTS: There were no forearm analysis errors. There were 24 (0.9%) femoral neck analysis errors, of which 23 resulted from misplacement of the analysis region. There were 33 (1.3%) spinal analysis errors, of which 24 resulted from misplacement of intervertebral disk space markers. Analysis errors of the femur and spine resulted in six misdiagnoses (0.2%).CONCLUSION: Misdiagnosis due to analysis errors is rare. Femoral neck analysis errors were easily detectable, but accurate spinal analyses depended on accurate identification of vertebral end plates and posterior elements. Nonetheless, these potentially serious errors can be detected and corrected if the analyses are reviewed and interpreted by a supervising physician who is familiar with the relevant anatomy, proper analysis techniques, and factors-such as artifacts-that adversely affect the accuracy of the analysis.