Routine quality assurance (QA) of cone‐beam computed tomography (CBCT) scans used for image‐guided radiotherapy is prescribed by the American Association of Physicists in Medicine Task Group (TG)‐142 report. For CBCT image quality, TG‐142 recommends using clinically established baseline values as QA tolerances. This work examined how image quality parameters vary both across machines of the same model and across different CBCT techniques. Additionally, this work investigated how image quality values are affected by imager recalibration and repeated exposures during routine QA.

中文翻译：

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CBCT图像质量QA：建立量化方案

美国医学物理学家协会工作组 (TG)-142 报告规定了用于影像引导放射治疗的锥形束计算机断层扫描 (CBCT) 扫描的常规质量保证 (QA)。对于 CBCT 图像质量，TG-142 建议使用临床确定的基线值作为 QA 容差。这项工作检查了图像质量参数如何在同一模型的机器和不同的 CBCT 技术之间变化。此外，这项工作还调查了图像质量值如何受到成像仪重新校准和常规 QA 期间重复曝光的影响。