颅底调强放射治疗的综合质量保证
Comprehensive quality assurance for base of skull IMRT.
作者信息
Thomas A, O'Daniel J, Adamovics J, Ibbott G, Oldham M
机构信息
Duke University Medical Center, Durham, NC, USA.
Rider University, Lawerenceville, NJ, USA.
出版信息
J Phys Conf Ser. 2013;4444(1):012050. doi: 10.1088/1742-6596/444/1/012050.
Six base of skull IMRT treatment plans were delivered to Presage dosimeters within the RPC Head and Neck Phantom for quality assurance (QA) verification. Isotropic 2mm 3D data were acquired by optical-CT scanning with the DLOS system (Duke Large Optical-CT Scanner) and compared to the Eclipse (Varian) treatment plan. Normalized Dose Distribution (NDD) pass rates were obtained for a number of criteria. High quality 3D dosimetry data was observed from the DLOS system, illustrated here through colormaps, isodose lines, and profiles. Excellent agreement with the planned dose distributions was also observed with NDD analysis revealing > 90% pass rates (with criteria 3%, 2mm), and noise < 0.5%. The results comprehensively confirm the high accuracy of base-of-skull IMRT treatment in our clinic.
六个颅底调强放疗（IMRT）治疗计划被传送到RPC头颈模体中的Presage剂量仪中进行质量保证（QA）验证。使用DLOS系统（杜克大学大型光学CT扫描仪）通过光学CT扫描获取各向同性的2mm三维数据，并与Eclipse（瓦里安）治疗计划进行比较。针对多个标准获得了归一化剂量分布（NDD）通过率。从DLOS系统观察到高质量的三维剂量学数据，此处通过彩色图、等剂量线和剖面图进行展示。通过NDD分析还观察到与计划剂量分布具有极佳的一致性，显示通过率>90%（标准为3%，2mm），且噪声<0.5%。结果全面证实了我们诊所颅底IMRT治疗的高精度。
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