To evaluate the accuracy of surface‐guided radiotherapy (SGRT) in cranial patient setup by direct comparison between optical surface imaging (OSI) and cone‐beam computed tomography (CBCT), before applying SGRT‐only setup for conventional radiotherapy of brain and nasopharynx cancer.

中文翻译：

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传统的脑和鼻咽癌放射治疗的表面引导患者设置的准确性

通过在光学表面成像（OSI）和锥束计算机断层扫描（CBCT）之间进行直接比较来评估颅面放射治疗（SGRT）在颅脑患者中的准确性，然后将仅SGRT的布置应用于脑和鼻咽癌的常规放射治疗。