应用锥形束CT研究盆腔肿瘤放射治疗分次间及分次内的摆位误差 - docin.com豆丁网 为系统误差和随机误差。 每位病人的摆位系统误差为所有分次摆位误差的平均值(Mean,M),随机误差 为所有分次摆位误差的标准差(Standarddeviation,SD),群体化系统误差为每 F 位病人系统误差均值M,群体化系统误差的标准差记为己群体化为所有患者个 体化
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许多医疗业者开始借用其他产业的专业统计工具,例如六个标准差,已经在「通用」等公司行之多年,有效减少生产制造的误差。
Many health providers now employ statistical tools like Six Sigma, long used by firms like GE to reduce variability in manufacturing, and other methods borrowed from industry.
实验结果表明,模型预测结果的平均相对误差为10.316%,相对标准差为12.895%,满足工程实际要求。
Experiment shows that the average relative error of predicted results is 10.316% and the relative standard error is 12.895%, thus it satisfying requirements of the engineering.
仿真和实际数据处理的结果表明,该方法在参数估计误差和标准差方面明显优于其它算法。
The results of simulated and real data procession show that the proposed method favorably compares to other ones as to the parameter estimation error and its standard deviation.
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