A new commercial OSL dosimetry system was studied to analyze the possibility of its use for VMAT planning checks with end-to-end approach. The system was characterized and tested in conventional dose range (0,25–3 Gy). NanoDots (Landauer®), with new readout system MicroSTARii™, were characterized in terms of: signal decrease for repeated readings; angular, energy and dose-rate dependence. A calibration curve was obtained using 6 MV photon beam. Two VMAT plans, regarding lung lesions, were designed and optimized with: 6 MV, 600 MU/min, Eclipse TPS and Acuros XB algorithm for TrueBeam 2.5. Verification plans were created and performed both in RW3 and in anthropomorphic phantom, using end-to-end approach. The measurements in RW3 were compared to ion chamber measurement values. In anthropomorphic phantom, the OSLDs were allocated in apposite inserts, with different densities. NanoDots with new readout system MicroSTARii™ exhibited to be suitable for VMAT verifications with end-to-end approach in conventional fractionated treatments.

中文翻译：

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调试用于 VMAT 治疗验证的新型商业光激发光 (OSL) 剂量测定系统

研究了一种新的商业 OSL 剂量测定系统，以分析其使用端到端方法进行 VMAT 规划检查的可能性。该系统在常规剂量范围（0.25-3 Gy）中进行了表征和测试。NanoDots (Landauer®) 具有新的读出系统 MicroSTARii™，其特征在于： 重复读数的信号降低；角度、能量和剂量率依赖性。使用 6 MV 光子束获得校准曲线。针对肺部病变设计并优化了两个 VMAT 计划：6 MV、600 MU/min、Eclipse TPS 和 TrueBeam 2.5 的 Acuros XB 算法。验证计划是在 RW3 和拟人模型中使用端到端方法创建和执行的。RW3 中的测量值与离子室测量值进行了比较。在拟人化的幻影中，OSLD 被分配在适当的插入中，具有不同的密度。带有新型读出系统 MicroSTARii™ 的 NanoDots 表现出适用于在传统分馏处理中采用端到端方法进行 VMAT 验证。