Methods: 178 patients with multiple metastases of cancer to bones were treated with 89Sr internal radiotherapy, we observed and followed up all patients closely from 3 sides, including pain palliation, analysis of focus therapy effect, side-effect.

• 方法：对178例转移性骨肿瘤患者采用89锶内照射治疗，分别从缓解骨痛、病灶疗效评价和不良反应三方面进行密切观察、随访。