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鼻咽癌是一种血管依赖性肿瘤。MRI动态增强扫描可非创伤性地评价肿瘤的微血管生成,对肿瘤的生物学特性有重要的提示意义。鼻咽癌是一种放疗敏感的肿瘤,调强放射治疗(IMRT)在鼻咽癌的治疗中具有特殊的应用价值[1],它能够最大限度地将放射剂量集中在靶区内以杀灭肿瘤细胞,并使周围正常组织和器官少受或免受不必要的放射,从而提高放射治疗的增益比。但IMRT对肿瘤血管生成的作用,目前研究较少。本研究将对鼻咽癌IMRT前后动态增强曲线进行探讨,观察强化的类型
Nasopharyngeal carcinoma is a vascular-dependent tumor. MRI dynamic contrast-enhanced scanning can evaluate the tumor angiogenesis non-invasively, which has important implications for the biological characteristics of the tumor. Nasopharyngeal carcinoma is a radiotherapy-sensitive tumor. IMRT has special application value in the treatment of nasopharyngeal carcinoma [1]. It can maximize the radiation dose to kill in the target area Tumor cells, and make the surrounding normal tissues and organs less or free from unnecessary radiation, thereby increasing the radiation therapy gain ratio. However, the role of IMRT on tumor angiogenesis, less research. This study will explore the dynamic enhancement curve of nasopharyngeal carcinoma before and after IMRT to observe the type of enhancement