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首页> 外文期刊>Radiotherapy and oncology: Journal of the European Society for Therapeutic Radiology and Oncology >Analysis of anatomical factors controlling the morbidity of radiation-induced otitis media with effusion.
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Analysis of anatomical factors controlling the morbidity of radiation-induced otitis media with effusion.

机译:分析控制放射性积液引起的辐射性中耳炎发病率的解剖学因素。

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PURPOSE: To analyze the anatomical factors controlling the morbidity of radiation-induced otitis media with effusion (OME) and determine how to best preserve middle ear function when treating nasopharyngeal carcinoma (NPC). MATERIALS AND METHODS: Forty patients with nasopharyngeal carcinoma undergoing 3-D radiotherapy (RT) planning and curative RT were analyzed retrospectively. The difference in dosage over the middle ear cavity and the isthmus of the Eustachian tube (ET) was evaluated. Pure tone audiometry and impedance audiometry tests were performed before and after RT. RESULTS: Mean dosages over the isthmus of the ET for acoustic impedance and pure tone audiometry were recorded. Differences in dosage among the three classifications of unchanged, improved, and worsened ears were statistically significant. CONCLUSION: There was a correlation between the morbidity of radiation-induced OME and the radiation dosage over the middle ear cavities. Decreased OME morbidity was observed when the dosage over the isthmus of the ET was below 52Gy and the dosage over middle ear cavity was below 46Gy.
机译:目的:分析控制放射性积液(OME)引起的辐射性中耳炎发病率的解剖学因素,并确定在治疗鼻咽癌(NPC)时如何最好地保留中耳功能。材料与方法:回顾性分析了40例接受3-D放疗(RT)计划和根治性放疗的鼻咽癌患者。评估中耳腔和咽鼓管(ET)峡部的剂量差异。在RT之前和之后进行纯音测听和阻抗测听测试。结果:记录了整个ET峡部的声阻抗和纯音测听的平均剂量。在未分类,改善和恶化的三种分类中,剂量差异具有统计学意义。结论:辐射诱发的OME的发病率与中耳腔的辐射剂量之间存在相关性。当ET峡部的剂量低于52Gy且中耳腔的剂量低于46Gy时,观察到OME发病率降低。

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