Establishment of accuracy management system in IMRT QA/QC using organic phosphor

本研究利用电荷耦合元件摄影机-有机萤光体配合面阵侦测器系统，评估调强放射治疗照射野的剂量与机械准确度。采用塑料闪烁体（水等效材料）制作了面阵探测器和反射镜。多叶准直器的停止位置、移动距离和吸收剂量等信息的获取可以同时获得，且精度较高。该系统达到了临床适应水平的精度要求，并有望提高质量保证和更安全的治疗。

In this study, the dose and mechanical accuracy in irradiation field for intensity modulated radiation therapy using the charge coupled device camera-organic phosphor with area type detector system was evaluated. The area type detector, which is made from plastic scintillator known as water equivalent material, and reflecting mirror were fabricated. Acquisitions of information such as stopping positions and moving distance related to multileaf collimator, and absorbed dose were able to obtain simultaneously with high precision easily. The system was achieved within the precision at clinical adaptive level, and the improvement of the quality assurance and more safely treatment were expected.