It is not only a radiotherapy reform but a practical and effective treatment that the moulding of low-melting-point lead is used to supplement conventional and normal lead block.

• 摘要用低熔点铅合金浇铸的办法补充传统的标准式铅挡，是放射治疗界进行普通放疗的一项改革，也是一种切实有效的治疗方案。