磁共振成像在鼻咽癌放射治疗中的应用

Applications of magnetic resonance imaging in radiotherapy of nasopharyngeal carcinoma

磁共振成像（MRI）是一种多参数成像方法，具有良好的软组织对比度，在鼻咽癌（NPC）的诊断、分期、放疗照射野设计及疗效评估中具有显著优势。尤其是近几年发展的磁共振扩散加权成像（DWI）能提供细胞水平的定性和定量信息，反应肿瘤细胞构成及细胞膜完整性的变化，在NPC病变的发现、颈部淋巴结及全身转移和疗效评估方面有重要价值。

Magnetic resonance imaging（MRI） has apparent dominance in nasopharyngeal carcinoma （NPC） diagnosis, staging, the plan of radiotherapy target and assessment of efficacy because of its high-contrast of parenchyma and muli-parameters imaging. Especially diffusion-weighted imaging （DWI） developed in several years, it can provide qualitative and quantitative information at the cellular level about tumor cellularity and the integrity of cell membranes, which is valuable for tumor detection, cervical lymph nodes metastases, systemic transfer, monitoring and predicting the treatment response of nasopharyngeal carcinoma.