全身γ刀SBRT治疗高龄局部晚期NSCLC疗效确切

2012-06-28 鲍爱宁摘编 医学论坛网

  最近,武警湖北省总队医院伽玛刀中心、武警湖北省总队医院肿瘤科、武警湖北省总队医院影像科、湖北省肿瘤医院放疗科的研究人员的一项研究显示,全身γ刀体部立体定向放射疗法(stereotactic body radiation therapy,SBRT)治疗局部晚期非小细胞肺癌(non-small cell lung cancer,NSCLC

  最近,武警湖北省总队医院伽玛刀中心、武警湖北省总队医院肿瘤科、武警湖北省总队医院影像科、湖北省肿瘤医院放疗科的研究人员的一项研究显示,全身γ刀体部立体定向放射疗法(stereotactic body radiation therapy,SBRT)治疗局部晚期非小细胞肺癌(non-small cell lung cancer,NSCLC)高龄患者临床疗效确切,不良反应较轻。该研究发表于2012年第4期《中国癌症杂志》。

  该研究旨在探讨全身γ刀SBRT治疗高龄局部晚期NSCLC的疗效、不良反应及临床应用的可行性。

  研究人员采用超级γ刀(SGS-Ⅰ型)治疗高龄局部晚期NSCLC患者68例,根据肿瘤的位置、临床靶体积、患者的身体状况与治疗目的,制定放射治疗计划。肿瘤体积56.9~1 097.0 cm3,等剂量曲线50%~60%,周边照射总剂量35~45 Gy,分割处方剂量3.5~5.0 Gy,重复治疗8~12次,每周5次。治疗前按定位时体位复位,再次CT扫描离线体位验证及调整计划靶体积(planned target volume,PTV)剂量分布。采用Kaplan-Meier法计算局部控制率和生存率。

  结果,68例患者治疗后中位随访18个月,随访率为100%。治疗结束后2~3个月经过CT复查,24例(35.29%)肿瘤消失,42例(60.29%)肿瘤缩小,2例(4.41%)无变化,总有效率为95.59%。1年局部控制率分别为61.76%。1、2、3年总生存率分别为82.35%、34.04%和20.69%。2级放射性肺炎及食管炎发生率分别为16.18%和19.12%,无2级以上放射性肺炎、食管炎的发生。PTV和验证靶区适形指数分别为0.41±0.08和0.39±0.12(P>0.05)。



    

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    2013-01-15 zexyw10
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    2012-06-30 chg122
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    2012-06-30 xlysu
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