开发和评估部位置检测方法在部跟踪交付使用电子门户成像设备Cine模式的开发和评估
Juntendo Iji zasshi = Juntendo medical journal
|July 31, 2024
概括
这项研究开发了一种使用电子门户成像设备 (EPID) cine 模式的方法,可以在放射治疗期间准确检测部位置,从而达到亚毫米准确度,用于精确的辐射输送.
科学领域:
- 医学物理 医学物理
- 辐射瘤学 辐射瘤学
- 图像技术技术的成像技术
背景情况:
- 在放射治疗中,精确的辐射输送对于患者的治疗结果至关重要.
- 跟踪的交付需要精确监控的位置.
- 现有的方法可能缺乏必要的准确性或实时反.
研究的目的:
- 开发和验证一种新的方法,用于检测部位置在部跟踪放射治疗的交付.
- 为了确保精确的辐射定位,在电影模式下使用电子门户成像设备 (EPID).
- 在动态治疗过程中评估部位置检测的准确性.
主要方法:
- 采用双向防护 (BPF) 计划,其中下巴跟踪多叶合器 (MLC) 孔径.
- 在线加速器上以 cine 模式使用 EPID 获取辐射图案.
- 通过总结电影图像来创建一个类似于围的图像,以评估MLC叶子和部位置.
主要成果:
- 从cine EPID图像中确定的下巴位置显示出高准确度.
- X1和X2的绝对差异分别为0.16±0.19毫米和0.11±0.16毫米.
- 检测到的MLC叶子位置的最大误差为0.11毫米,证明了亚毫米精度.
结论:
- 在下巴跟踪分娩期间,可以使用cine EPID图像准确识别下巴位置.
- 开发的方法在部位置检测方面实现了比0.5毫米更好的准确性.
- 该BPF计划作为一个可靠的围测试,以高精度验证MLC叶子的位置.
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