针对单病灶立体定向放射治疗（SRS）和立体定向体部放射治疗（SBRT），二维和三维二极管阵列之间的患者特异性质量保证比较。
A patient-specific QA comparison between 2D and 3D diode arrays for single-lesion SRS and SBRT treatments.
作者信息
Lee Yongsook C, Kim Yongbok
机构信息
Department of Radiation Oncology, Miami Cancer Institute, Miami, FL 33176, USA.
Department of Radiation Oncology, Duke University, Durham, NC 27710, USA.
出版信息
J Radiosurg SBRT. 2021;7(4):295-307.
The purpose of this study is to compare patient-specific quality assurance (PSQA) results between two dimensional (2D) diode (SRS MapCHECK) and 3D diode (ArcCHECK) arrays. Twenty-eight intracranial stereotactic radiosurgery (SRS) and 26 lung stereotactic body radiation therapy (SBRT) clinical plans with a single lesion were selected and categorized into 4 groups: 20 SRS dynamic conformal arc therapy (DCAT) plans (Group A), 8 SRS volumetric modulated arc therapy (VMAT) plans (Group B), 6 SBRT DCAT plans (Group C) and 20 SBRT VMAT plans (Group D). An individual field of each plan was delivered on SRS MapCHECK and ArcCHECK and QA analysis was performed using 4 gamma criteria of dose difference/distance-to-agreement of 3%/3 mm, 3%/2 mm, 2%/2 mm and 2%/1 mm. Statistical analysis was performed to compare PSQA results between the 2 QA devices. For all 4 groups and all 4 gamma criteria, average gamma passing rates were higher with SRS MapCHECK.
本研究的目的是比较二维（2D）二极管（SRS MapCHECK）和三维（3D）二极管（ArcCHECK）阵列之间的患者特异性质量保证（PSQA）结果。选择了28例颅内立体定向放射治疗（SRS）和26例单病灶肺部立体定向体部放射治疗（SBRT）临床计划，并分为4组：20例SRS动态适形弧形治疗（DCAT）计划（A组）、8例SRS容积调强弧形治疗（VMAT）计划（B组）、6例SBRT DCAT计划（C组）和20例SBRT VMAT计划（D组）。每个计划的单个射野在SRS MapCHECK和ArcCHECK上进行照射，并使用剂量差异/距离一致性的4种伽马标准（3%/3 mm、3%/2 mm、2%/2 mm和2%/1 mm）进行质量保证分析。进行统计分析以比较两种质量保证设备之间的PSQA结果。对于所有4组和所有4种伽马标准，SRS MapCHECK的平均伽马通过率更高。
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