对统计过程控制的特定场所评估,以设定在RapidArc治疗交付中的患者特定质量保证的容忍度和行动极限
Sumanta Manna1,2, Benoy Kumar Singh1, K J Maria Das3
1Department of Physics, GLA University, Mathura, Uttar Pradesh, India.
Journal of biomedical physics & engineering
|December 11, 2025
概括
统计过程控制 (SPC) 有效地监测了RapidArc治疗的放射治疗质量保证极限. 特定地点的极限对于使用各种马标准进行准确的患者特定质量保证 (PSQA) 是至关重要的.
科学领域:
- 医学物理 医学物理
- 辐射疗法质量保证 辐射疗法质量保证
背景情况:
- 患者特异性质量保证 (PSQA) 对于精确的放射治疗至关重要,特别是像RapidArc (RA) 这样的先进技术.
- 确保处理准确性需要强大的质量保证协议.
研究的目的:
- 评估统计过程控制 (SPC) 的有效性,以在PSQA中为RapidArc (RA) 建立容忍限度 (TL) 和行动限度 (AL).
- 通过不同的解剖部位和玛标准来评估这些极限.
主要方法:
- 通过使用电子门户成像设备 (EPID) 分析了大脑,头,胸和骨盆的RA治疗验证计划.
- 使用个人移动范围 (I-MR) 图表计算各种玛标准的下控制极限 (LCL) (例如,3%/3毫米,2%/2毫米).
- 员工指数加权移动平均线 (EWMA) 和累计总和 (CUSUM) 图表用于检测控制漂移.
主要成果:
- 对于头部和部的确定的LCL范围为89.42% (2% / 2毫米) 到96.82% (3% / 3毫米) 的全球玛.
- 盆腔和胸部部位分别显示LCL为94.84%和94.73%的3%/3毫米标准.
- 根据EWMA和CUSUM图表,大多数控制图表都保持在TL范围内,除了2%/2毫米标准;针对3%/3毫米标准,在各地点定义了行动极限 (AL).
结论:
- 个人移动范围 (I-MR),EWMA和CUSUM图表是快速Arc (RA) 放射治疗中PSQA监测的有效工具.
- 需要特定站点的TL和AL,受选择的玛标准和使用的测量设备的影响.
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