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头颈部肿瘤在放疗过程中每次治疗时的靶区位置和形状都会存在差异,为了避免造成靶区漏照或正常组织受到过多照射,精确放疗的准确性显得尤为重要。自适应放疗(adaptive radiation therapy,ART)是在三维适形放疗(3D-CRT)和调强放射治疗(IMRT)基础上出现的新型放疗技术,它是图像引导放射治疗(IGRT)的进一步提高和发展。治疗实施通过患者图像、剂量等反馈信息对原治疗计划重新优化和调整,这是一种基于反馈控制理论的治疗策略。其目的是使放射治疗更加精确化、个体化。
Head and neck cancer in the course of each treatment of radiation therapy during the target location and shape will be different, in order to avoid leakage of the target area or excessive exposure to normal tissue, accurate radiotherapy accuracy is particularly important. Adaptive radiation therapy (ART) is a new radiotherapy technique based on three-dimensional conformal radiotherapy (3D-CRT) and IMRT. It is a further enhancement of image-guided radiotherapy (IGRT) and development of. The treatment implementation re-optimizes and adjusts the original treatment plan through the feedback information of the patient’s image and dose, which is a treatment strategy based on the feedback control theory. Its purpose is to make radiotherapy more accurate and individualized.