柯林斯詞典brachytherapy /?br?k??θ?r?p?/ 1. N a form of radiotherapy in which sealed sources of radioactive material are inserted temporarily into body cavities or directly into tumours 近距放射療法 返回 brachytherapy劍橋詞典a treatment for cancer in which very small radioactive objects are put inside or near a tumour 近距（放射）治療 返回 brachytherapy