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      Ethos在线自适应放疗临床应用分段时间研究和优化策略

      Segmented Time Study and Optimization Strategy for Clinical Application of Ethos Online Adaptive Radiotherapy

        摘要
      • 摘要:
        目的 分析Ethos加速器在线自适应放射治疗技术在临床实践中整个流程的时间特征，为自适应放疗各个环节的综合优化提供指导。
        方法 统计61例宫颈癌、直肠癌、胃癌、肺癌、食管癌和乳腺癌患者使用Ethos在线自适应放射治疗临床工作流程中的各分段时间、总时间和靶区体积的平均数±标准差，评估不同病种各分段的时间特征，并将各病种靶区和危及器官修改平均时间与靶区平均体积对比。
        结果 宫颈癌总治疗时间最长，乳腺癌最短。除乳腺癌外，其余各分段靶区和危及器官修改时间耗时最长，靶区和危及器官修改平均时间与靶区平均体积走向一致。
        结论 各病种总治疗时间为15~35 min，仍有改进空间。

         

        Abstract:
        Objective To analyze the time characteristics of the Ethos online adaptive radiation therapy (OART) process in clinical practice and provide guidance for the comprehensive optimization of each stage of adaptive radiotherapy.
        Methods The study involved 61 patients with cervical, rectal, gastric, lung, esophageal, and breast cancers who underwent Ethos OART. The mean ± standard deviation of segmental times, total times, and target volumes for these patients were tracked. The time characteristics for different cancer types were evaluated, and the average time for target and organ-at-risk (OAR) modifications was compared with the average target volume for each cancer type.
        Results Cervical cancer born the longest total treatment time, while breast cancer had the shortest. For all cancer types except breast cancer, the modification time for target and OAR was the most time-consuming segment. The average time for target and OAR modifications aligned with the trend of the average target volume.
        Conclusion The total treatment time for various cancers ranges from 15 to 35 minutes, indicating room for improvement.

         

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