加速器X射线组织最大剂量比测量值与计算值的比较

摘要

目的:验证组织最大剂量比(TMR)计算的准确性.方法:用三维水箱测量百分深度剂量(PDD)和TMR,并与计算值TMR进行比较.结果:测量值与计算值在误差允许范围内.结论:X射线TMR的计算值可直接用于临床剂量计算.%Objective To verify the accuracy of tissue maximum ratios (TMR)of the calculation. Methods The percentage depth doses (PDD) and TMR were measured by three-dimensional tanks, and the measurement values of TMR were compared with the calculation ones. Results The measurement values and the calculation ones of TMR were within the range of allowable error. Conclusion X-ray calculation values of TMR can be directly used for clinical dose calculation.