MRI与CT成像差异对鼻咽癌T分期以及原发肿瘤靶区体积影响的研究  

Study of Effects of Difference Between MRI and CT Findings on T-staging of Nasopharyngeal Carcinoma and Target Volume

作　　者：李龄[1] 王安宇[1] 朱小东[1] 谢东[2] 吴春华[1] 黄江琼[1] 杨超凤[1] 潘朝阳[1] 

机构地区：[1]广西医科大学附属肿瘤医院放疗科,广西南宁530021 [2]广西医科大学附属肿瘤医院CT室,广西南宁530021

出　　处：《临床放射学杂志》2008年第5期593-596,共4页Journal of Clinical Radiology

摘　　要：目的探讨鼻咽癌MRI和CT成像差异对鼻咽癌T分期的影响及对原发肿瘤靶区体积的影响。资料与方法比较101例经病理诊断为鼻咽低分化鳞癌的患者的MRI和CT表现,应用其差异比较鼻咽癌靶区的体积对放射治疗效果的影响。结果咽后淋巴结、头长肌、蝶骨、枕骨斜坡、鼻窦等处的病灶在MRI的发现率高于CT(P<0.05)。对鼻咽癌的T分期,MRI和CT之间有差异(P<0.05)。根据MRI表现勾画的鼻咽癌靶区体积大于根据CT表现勾画的鼻咽癌靶区体积(P<0.05)。结论MRI对发现鼻咽癌、鼻咽癌分期及勾画鼻咽癌原发肿瘤靶区体积优于CT。Objective To investigate effects of difference between MRI and CT findings on T-staging of nasopharyngeal carcinoma and target volume. Materials and Methods MRI and CT findings in 101 newly diagnosed patients with poorly differentiated nasopharyngeal carcinoma were compared. The effects of target volume of primary tumor based on MRI and CT findings on radiation therapy were evaluated. Results The rate of demonstrating lesions in the retropharyngeal node, long muscle of head, sphenoidal sinus, clivus, and paranasal sinuses by MRI was higher than that by CT （ P 〈 0.05 ）. There was significant difference in T-staging of nasopharyngeal carcinoma between MRI and CT （ P 〈 0.05 ）. The target volume of primary tumor delineated on MRI was more than CT （ P 〈 0.05 ）. Conclusion MRI was superior to CT in demonstrating nasopharyngeal carcinoma and metastases, staging of nasopharyngeal carcinoma, and calculating target volume of the tumor.

关 键 词：鼻咽癌 体层摄影术 X线计算机 磁共振成像 

分 类 号：R739.63[医药卫生—肿瘤]