The radial dose distribution(CDD) on center surface,axial DDON the surface and 0.5 mm apart from the surface of the stent were calculated. For the radial distribution,the variation was less than 1.5%,and so the axial one.

• 分别计算了中心面的径向、支架表面及离支架表面 0 5mm处的轴向剂量分布 ,径向最大差异为 1 5%25 ,轴向的差异也在1 5%25之内。