RADIOTHERAPY, the use of radiation zipping through the DNA of cancer cells to kill them or halt their reproduction, has always had the disadvantage of causing collateral damage to healthy tissue.

放射线疗法，是一种用能穿透癌细胞DNA的射线能量杀死癌细胞，或者阻止其繁殖的疗法，该疗法一直存在一个缺点，即对周围健康组织造成间接的损害。

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Now new computer-guided systems cut down on collateral damage by molding the radiation beam to the precise contours of the prostate, reducing side effects and boosting cure rates.

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