In this study, we used square-type organic scintillating fibers and polymethyl methacrylate phantoms to develop an all-in-one phantom dosimeter measure the multidimensional dose distributions for a ⁶⁰Co radiotherapy source. Multidimensional dose distributions, which include the transverse, depth, and surface dose distributions, can be obtained by measuring scintillating light simultaneously in real time. An additional phantom for quality assurance before radiotherapy is not required because square-type organic scintillating fibers are directly inserted into the polymethyl methacrylate phantom. Multidimensional dose distributions can also be measured simultaneously by changing the arrangement of one-dimensional phantom dosimeters, which are very thin and can be stacked, similar to books placed on a shelf. Therefore, the proposed dosimeter can be applied as an all-in-one phantom dosimeter with a variable structure that can respond to changes in various radiotherapy treatment environments. Through experiments, the multidimensional dose distributions for the ⁶⁰Co radiotherapy unit were measured to evaluate the performance of the proposed all-in-one phantom dosimeter. The results were compared and evaluated using external beam therapy films and Monte Carlo simulations. Based on the results of this study, significant time is expected to be saved during dose measurements for quality assurance in radiotherapy, as simultaneous measurements can yield multidimensional data on the transverse, depth and surface dose distributions in real time.

在这项研究中，我们使用了方形有机闪烁纤维和聚甲基丙烯酸甲酯幻象，开发出了一种多合一幻象剂量计，可以测量⁶⁰倍的多维剂量分布。联合放疗源。多维剂量分布，包括横向，深度和表面剂量分布，可以通过实时同时测量闪烁光来获得。由于方形有机闪烁纤维直接插入聚甲基丙烯酸甲酯体模中，因此不需要在放疗前使用额外的体模来保证质量。多维剂量分布也可以通过更改一维幻影剂量计的布置来同时测量，该幻影剂量计非常薄并且可以堆叠，类似于放置在书架上的书本。因此，所提出的剂量计可以用作具有可变结构的多合一体模剂量计，该结构可以响应各种放射治疗环境中的变化。通过实验，测量了⁶⁰ Co放射治疗单元，以评估拟议的多合一幻象剂量计的性能。使用外部束治疗膜和蒙特卡洛模拟对结果进行比较和评估。根据这项研究的结果，在剂量测量过程中有望节省大量时间以保证放射治疗的质量，因为同时进行的测量可以实时获得横向，深度和表面剂量分布的多维数据。