A new,more exact method called intensity modulated radiation therapy (IMRT) concentrated the killing rays more precisely on the desired target,allowing doctors to deliver stronger doses with fewer side effects.

• 一种新的更准确的方法被称之为强化调节性治疗(IMRT)。它可以使杀死癌细胞的射线更准确地锁定好目标。这样医生可以加强剂量而副作用很小。