目的：探讨体部立体定向放射治疗肺转移瘤的方法和疗效。
Objective To explore the methods and effects of body fractionated stereotactic radiotherapy in the treatment of lung metastases.
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.
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