另外,令人振奋的是,研究中没有患儿在接受质子放疗后出现心、肺、胃肠道的迟发不良反应。而在以往的研究中,若长期接受传统的光子放疗,出现限制性肺疾病的概率是 24%~50%[6][7]。
\n\n总的来说,质子放疗治疗小儿髓母细胞瘤,疗效不错,而不良反应较传统光子放疗更轻,可以作为光子放疗的替代疗法。
\n\n质子放疗的疗效是明确的,它的特征性剂量分布成为它的强力优势。不过,质子放疗的装置十分昂贵,并需建设独立的治疗中心才能运行这种疗法,因此,国内能接收患者的质子放疗中心还很少;而质子放疗的费用也很高,经济因素束缚了很多患者家庭的治疗选择。目前,国内已有更多的质子放疗中心正在建设,相信它们能为国内更多患者带来福音。
\n\n 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