Objective: To explore the pain relief effect with a single fraction and multifraction radiotherapy for bone metastases.

目的：研究单次放射治疗与多次分割放射治疗对于骨转移性疼痛止痛效果。

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Objective: To observe the radiotherapy effect about 2 kinds of fractionated regimen lower than routine dosage on metastases bone pain.

目的观察低于常规剂量的2种分割方式治疗骨转移性疼痛的疗效。

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Conclusion Bonin can reduce the cancer related pain developed by bone metastases and its side effects are slight, so patients in poor conditions can receive it.

结论博宁能有效地减轻骨转移引起的疼痛，其毒副反应轻微，一般体质差的病人也能耐受。

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