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图像引导放射治疗不同配准方式对肺癌患者摆位误差影响的对比分析

李羚, 高雪梅, 罗志尧, 罗银贵

李羚, 高雪梅, 罗志尧, 罗银贵. 图像引导放射治疗不同配准方式对肺癌患者摆位误差影响的对比分析[J]. 循证医学, 2022, 22(5): 282-285. DOI: 10.12019/j.issn.1671-5144.2022.05.007
引用本文: 李羚, 高雪梅, 罗志尧, 罗银贵. 图像引导放射治疗不同配准方式对肺癌患者摆位误差影响的对比分析[J]. 循证医学, 2022, 22(5): 282-285. DOI: 10.12019/j.issn.1671-5144.2022.05.007
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LI Ling, GAO Xue-mei, LUO Zhi-yao, LUO Yin-gui. Comparative Analysis of the Influence of Different IGRT Registration Methods on the Positioning Error of Patients With Lung Cancer[J]. Journal of Evidence-Based Medicine, 2022, 22(5): 282-285. DOI: 10.12019/j.issn.1671-5144.2022.05.007
Citation: LI Ling, GAO Xue-mei, LUO Zhi-yao, LUO Yin-gui. Comparative Analysis of the Influence of Different IGRT Registration Methods on the Positioning Error of Patients With Lung Cancer[J]. Journal of Evidence-Based Medicine, 2022, 22(5): 282-285. DOI: 10.12019/j.issn.1671-5144.2022.05.007
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图像引导放射治疗不同配准方式对肺癌患者摆位误差影响的对比分析

  • 德阳市人民医院肿瘤科, 四川德阳 618099

详细信息
    作者简介:

    李羚（1987-）,女,四川德阳人,主管技术员,医学学士,主要从事肿瘤放疗技术的相关临床及科研工作。Tel: 0838-2418820, E-mail: 52320551@qq.com。

  • 中图分类号: R734.2

Comparative Analysis of the Influence of Different IGRT Registration Methods on the Positioning Error of Patients With Lung Cancer

  • Department of Oncology, Deyang People's Hospital, Sichuan Deyang 618099, China

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    摘要
  • 摘要: 目的 比较图像引导放疗（image-guided radiotherapy,IGRT）不同配准方式对肺癌患者摆位误差的影响。 方法 选择2019年1月至2020年10月德阳市人民医院收治的64例肺癌患者进行研究。采用双色球法将患者分为2组,各32例。在模拟定位及制订放疗计划后A组采取灰度配准,B组采取骨性配准的方式进行计算机断层扫描（computed tomography,CT）图像配准。比较两组患者自动配准后的平移偏差及旋转偏差,并根据放疗医师手动微调后的配准结果计算并比较平移误差及旋转误差。 结果 两组患者旋转误差Rx、Ry、Rz差异均无统计学意义（P>0.05）,A组患者平移误差（translation error,G）较B组更小,差异有统计学意义（P<0.05）。两组下肺病灶自动配准结果与手动微调结果差异均无统计学意义,两组上肺病灶旋转误差Rx、Ry、Rz差异均无统计学意义（P>0.05）,但A组上肺病灶患者平移误差（G）较B组更小,差异有统计学意义（P<0.05）。 结论 在肺癌患者进行IGRT时选择灰度配准在平移误差方面有明显优势,特别是在上肺病灶患者中优势明显,在自动配准基础上加以手动微调可获得满足临床放疗需要的配准结果。
    Abstract: Objective To compare the effects of different image-guided radiotherapy （IGRT） registration methods on the positioning error of patients with lung cancer. Methods 64 patients diagnosed with lung cancer admitted to Deyang People's Hospital from January 2019 to October 2020 were selected for the study. The patients were divided into two groups by the double-color ball method, each with 32 cases. After simulating positioning and formulating the radiotherapy plan, group A adopted gray-scale registration, and group B adopted bone registration for CT image registration. Compare the translational deviation and rotation deviation of the two groups of patients after automatic registration, and calculate and compare the translational error and rotation error according to the radiotherapist's registration result after manual fine-tuning. Results There was no significant difference in the rotation error Rx, Ry, and Rz between the two groups of patients （P>0.05）. The translation error （G） of patient A was smaller than that of group B, and the difference was statistically significant （P<0.05）. There was no statistically significant difference between the results of the two groups'automatic registration of lower lung lesions and manual fine-tuning. There was no statistically significant difference between the two groups' conversion errors Rx, Ry, and Rz of upper lung lesions （P>0.05）. However, the translation error （G） of patients with upper lung lesions in group A was smaller than that of group B, and the difference was statistically significant （P<0.05）. Conclusions When lung cancer patients undergo IGRT, gray-scale registration had apparent advantages in translation error, especially in patients with upper lung lesions. Manual fine-tuning based on automatic registration can obtain registration results that meet the needs of clinical radiotherapy.
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  • 收稿日期:  2021-10-20
  • 发布日期:  2022-10-27

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