因為射線也穿過正常細胞,負作用也不小, 盡管劑量小.
另外,對射線加速器精度要求也很高,要定期校準.
因為射線也穿過正常細胞,負作用也不小, 盡管劑量小.
另外,對射線加速器精度要求也很高,要定期校準.
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