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目的:比较CT和MRI对鼻咽癌临床分期的差异和探讨MRI在鼻咽癌临床分期中的应用价值。方法:2006年8月至2008年2月,广西医科大学病理确诊的鼻咽癌患者102例,放疗前1周内以同一固定体位,完成增强CT和增强MRI。CT和MRI上分别读片判定鼻咽癌临床分期。结果:相对于CT检查,MRI使41.18%(42/102)病例的’92福州分期的T分期发生改变,其中23.53%(24/102)为升级,17.65%(18/102)为降级;使26.47%(27/102)病例的UICC/AJCC分期的T分期发生改变,其中20.59%(21/102)为升级,5.88%(6/102)为降级。N分期CT和MRI一致。结论:对于鼻咽癌局部T分期的准确确定,MRI比CT更有价值;对于N分期,CT和MRI一致。
Objective: To compare the difference of clinical staging of nasopharyngeal carcinoma between CT and MRI and to explore the value of MRI in clinical staging of nasopharyngeal carcinoma. Methods: From August 2006 to February 2008, 102 patients with pathologically diagnosed nasopharyngeal carcinoma in Guangxi Medical University were enrolled. One week before radiotherapy, the same fixed position was used to complete enhanced CT and enhanced MRI. CT and MRI were read on film to determine the clinical stage of nasopharyngeal carcinoma. Results: Compared with CT examination, MRI changed the T stage of ’92 Fuzhou staging in 41.18% (42/102) cases, with 23.53% (24/102) being upgraded and 17.65% (18/102) being relegated; T stage of UICC / AJCC staging changed in 26.47% (27/102) cases, of which 20.59% (21/102) was upgraded and 5.88% (6/102) was downgraded. N stage CT and MRI consistent. Conclusion: For the accurate determination of local T staging of nasopharyngeal carcinoma, MRI is more valuable than CT; for N staging, CT and MRI are consistent.