Conclusion Strontium 90 is an isotope with shorter radiation distance and dramatic local bioeffects which can occlude the vessels at the early stage. So it is acceptable by the patients for its simple usage and satisfactory effect.

• 结论90锶利用其射程短、局部生物效应强的特点作用于瘤体的浅表组织,使扩张之血管早期退缩、闭塞后失去血液供应而达到治疗目的,其治疗方法简便,效果好,患者易于接受。