照射野验证是实施精确放射治疗质量保证(QA)的关键步骤之一。
Portal image verification is one of key QA procedures for implementation of accurate radiotherapy.
对体部立体定向精确放射治疗而言，其体部机械定位系统是保证治疗精确性的核心。
The body mechanical orientation system is the kernel to guarantee the accuracy of body stereo precise radiotherapy.
精确的综合治疗可以使5年生存率提高到70%左右，这些治疗主要包括有创性的手术，放射治疗，化学治疗等传统治疗方法。
Refinements in treatment have increased the 5-year survival to close to 70 percent, but treatment still involves invasive surgery, radiation therapy and chemotherapy.
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