吉林大学学报(医学版) ›› 2015, Vol. 41 ›› Issue (01): 160-164.doi: 10.13481/j.1671-587x.20150131

• 临床医学 • 上一篇    下一篇

容积剂量参数V20和V30在评估和预测同步放化疗治疗局部晚期非小细胞肺癌致放射性肺损伤中的应用

杜敏娟1, 姜振宇2, 徐晓光3, 李洁4, 张进2   

  1. 1. 吉林医药学院附属医院肿瘤科, 吉林 吉林 132001;
    2. 吉林大学第一医院风湿免疫科, 吉林 长春 130021;
    3. 吉化集团公司总医院呼吸内科, 吉林 吉林 132021;
    4. 吉化集团公司总医院普外科, 吉林 吉林 132021
  • 收稿日期:2014-09-04 发布日期:2015-01-30
  • 通讯作者: 姜振宇,教授,博士研究生导师(Tel:0431-88782060,E-mail:512517403@qq.com) E-mail:512517403@qq.com
  • 作者简介:杜敏娟(1981-),女,辽宁省铁岭市人,主治医师,医学硕士,主要从事肺癌同步放化疗治疗方面的研究。
  • 基金资助:

    吉林省科技厅科研基金资助课题(20090454)

Application of V20 and V30 volume dose parameters in evaluating and forecasting radioactive lung injury caused by concurrent radiochemotherapy in treatment of locally advanced non-small cell lung cancer

DU Minjuan1, JIANG Zhenyu2, XU Xiaoguang3, LI Jie4, ZHANG Jin2   

  1. 1. Department of Oncology, Affiliated Hospital, Jilin Medical College, Jilin 132001, China;
    2. Department of Rheumatology, First Hospital, Jilin University, Changchun 130021, China;
    3. Department of Respiratory Medicine, General Hospital, Jilin Chemical Group Corporation, Jilin 132021, China;
    4. Department of General Surgery, General Hospital, Jilin Chemical Group Corporation, Jilin 132021, China
  • Received:2014-09-04 Published:2015-01-30

摘要:

目的: 探讨剂量体积直方图(DVH)容积剂量(Vd)参数V20和V30(双肺接受20和30 Gy剂量照射的肺体积占全肺总体积的百分比)与同步放化疗治疗局部晚期非小细胞肺癌(LANSCLC)所致的放射性肺损伤的关系,明确能否用V20和V30评价和预测同步放化疗放射性肺损伤发生率。方法: 入选本研究的同步放化疗患者36例,均采用三维适形放疗(3D-CRT),常规分割2 Gy/次,5次/周,总剂量60~66 Gy/30~33 F。有锁骨上淋巴结转移者也在常规放疗时另设野,给予电子线局部补量至60~70 Gy/7周。化疗方案为紫杉醇+卡铂(Taxol+Carboplatin),Taxol 135 mg·m-2,第1天、第22天;Carboplatin 药时曲线下面积(AUC)=6 g·L-1·min-1,第1天、第22天化疗。将2级以上放射性肺损伤分级与V20和V30进行相关分析,并根据全肺V20平均值(25.32%)及V30平均值(18.17%)分别进行分组,包括V20≤25%、V20>25%组和V30≤18%、V30>18%组,比较各组患者2级以上放射性肺损伤发生率。结果: 2级以上放射性肺损伤的分级与V20和V30均呈正相关关系 (r=0.740,P<0.05;r=0.705,P<0.05)。V20≤25%和V20 > 25%组2级以上放射性肺损伤的发生率分别为17.64%和52.63%,组间比较差异有统计学意义(P<0.05);V30≤18%和V30>18%组2级以上放射性肺损伤的发生率分别为16.67%和55.56%,组间比较差异有统计学意义(P<0.05)。结论: 容积剂量参数V20和V30可用于评估和预测同步放化疗后放射性肺损伤的发生率,同步放化疗中V20 > 25%及V30 > 18%时放射性肺损伤的发生率明显增高,需要对治疗计划进行修改,甚至放弃所设计的治疗计划。

关键词: 癌, 非小细胞肺, 同步放化疗, 放射性肺损伤, 容积剂量参数

Abstract:

Objective To research the relationship between volume dose(Vd)parameters V20 and V30 of dose volume histogram(DVH)and radioactive lung injury caused by concurrent radiochemotherapy in the treatment of locally advanced non-small cell lung cancer(LANSCLC), and to clear whether V30 and V20 could evaluate the probability of radioactive lung injury in chemoradiation. Methods 36 patients treated with concurrent radiochemotherapy were retrospectively analyzed.Radiotherapy Ways : 3D-CRT, the conventional fractionation was 2 Gy/frack(F), 5 times/week, the total dose in concurrent chemoradiotherapy group was 66-70 Gy/30-33 F and the total dose in sequential chemoradiotherapy group was 60-70Gy/30-35F.Chemotherapy plan: Taxol 135 mg·m-2 at the 1st and 22nd days, Carboplatin AUC=6 g·L-1·min-1, at the 1st and 22nd days.The correlation analysis between the grade of level 2 or higher incidence of radioactive lung injury and DVH parameters(V30 and V20)was performed.And according to the whole lung average V30(18.17%)and V20(25.32%), the groups were set up: V30 ≤18%, V30>18% and V20≤25%, V20>25%, and the incidence of levels 2 or higher radioactive lung injury in each group was compared. Results There has positive correlation between levels 2 or higher lung injury classification and V20, V30(r=0.705, P<0.05;r=0.740, P<0.05);the incidence of levels 2 or higher lung injury was respectively 16.67% and 55.56% in V30 ≤ 18.00% group and V30>18.00% group, and there was significant difference(P<0.05);the incidence of levels 2 or higher lung injury was respectively 17.64% and 52.63% in V20 ≤25% and V20 > 25% groups, and there was significant difference(P<0.05). Conclusion V30 and V20 can be used to evaluate and forecast the incidence of radioactive lung injury;when V30>18% and V20>25%, the incidence of radioactive lung injury is significantly increased, and the treatment plan needs to be modified and even the design of treatment plan is given up.

Key words: cancer, non small cell lung, concurrent radiochemotherapy, radioactive lung injury, volume dose parameters

中图分类号: 

  • R734.2