The influence to the radiation quality by the wedge filter;
楔形滤片对X射线辐射质的影响
Methods First, we measured the dose rate with and without containing 60°wedge filter for different field and depth on Siemens MD7745 linear accelerator by Capintec292, then we got the Fw for different fields and depths,after then,we calculated the deviations under the two conditions that we assume the Fw (10 cm × 10 cm, d= 10 cm) or the Fw (10 cm × 10 cm, dmax =1.
方法 通过对SIEMENS MD7745直线加速器,6MV-X线,60度楔形滤片下不同大小的照射野且不同深度分别测量加和不加楔形滤片时的剂量率,计算楔形因子。
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