The LNE-LNHB has developed a methodology to standardize electronic brachytherapy sources in terms of absorbed dose to water. It is based on the measurement of the air-kerma rate at a given distance from the source and the Monte Carlo calculation of a conversion factor. This factor converts the air-kerma in measurement conditions into absorbed dose to water at a 1 cm reference depth in a water phantom. As a first application, the method was used to calibrate a Zeiss INTRABEAM system equipped with its 4 cm diameter spherical applicator. The absorbed-dose rate value obtained in the current study was found significantly higher than that provided by the manufacturer in line with the observations already reported by a few other teams.

中文翻译：

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电子近距离放射源在水吸收剂量方面的剂量学形式和校准程序

LNE-LNHB已经开发出一种方法，可以根据对水的吸收剂量来标准化电子近距离放射治疗源。它基于距源的给定距离处的空气比释动能率的测量值和转换因子的蒙特卡洛计算。该因子将测量条件下的空气比释动能转换为水模型中参考深度为1 cm的水的吸收剂量。作为首次应用，该方法用于校准配备其直径4厘米的球形涂药器的Zeiss INTRABEAM系统。根据其他研究小组已报告的观察结果，发现当前研究中获得的吸收剂量率值明显高于制造商提供的值。