The purpose of this study is to provide a calibration methodology for radiation therapy machines where the closest field to the conventional reference field may not meet the lateral charged particle equilibrium (LCPE) condition of the machine‐specific reference (msr) field. We provided two methodologies by extending the International Atomic Energy Agency (IAEA) and the American Association of Physicists in Medicine (AAPM) TRS‐483 code of practice (COP) (Palmans et al. TRS‐483: Dosimetry of small static fields used in external beam radiotherapy: an international code of practice for reference and relative dose determination; 2017) methodology for the calibration of radiation therapy machines with 6 MV flattening filter free (FFF) beam and with field sizes down to 10 × 2 cm².

中文翻译：

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扩展了IAEA-AAPM TRS-483方法，适用于小至10×2 cm2的放射治疗机。

这项研究的目的是为放射治疗机提供一种校准方法，其中最接近常规参考场的场可能无法满足机器特定参考（msr）场的横向带电粒子平衡（LCPE）条件。我们通过扩展国际原子能机构（IAEA）和美国医学物理学家协会（AAPM）TRS-483实务守则（COP）（Palmans等人TRS-483：用于小静电场的剂量测定）扩展了两种方法外部束放射疗法：参考和相对剂量确定的国际操作规范; 2017年）采用6 MV扁平化无滤光片（FFF）束且场尺寸低至10×2 cm ²的放射治疗机校准方法。