【摘要】 目的 :评价高场MRI(1.5T)在喉、下咽癌术前分期中的价值。方法 :对 36例喉、下咽癌患者的MRI资料进行回顾性分期 ,并与临床分期及手术病理分期相对照。结果 :MRI对各期喉、下咽癌的准确率分别是T1:92 % ,T2 :86 % ,T3:86 % ,T4 :10 0 %。临床分期准确率分别是T1:10 0 % ,T2 :86 % ,T3:5 7% ,T4 :2 2 %。MRI和临床分期总准确率分别是 92 % ,6 9%。二者之间有显著性差异。结论 :高场MRI通过不同加权像的对比和从多角度准确显示肿瘤的部位形态及浸润范围 ,因而显著性提高喉、下咽癌术前分期的准确性更多还原

【Abstract】 Objective:To evaluate the value of the preoperative T staging of laryngeal and hypopharyngeal cancers by MRI at high field strength(1.5T).Methods:The MRI data of 36 cases of primary laryngeal or hypopharyngeal cancers were retrospectively staged,and compared with the clinical and postsurgical pathologic staging.Results:The accuracy of staging in each T stage of laryngeal and hypopharyngeal cancers was:T 1:92%;T 2:86%;T 386%;T 4:100% by MRI vs.T 1:100%;T 286%;T 3:57%;T 4:22% by clinic/laryngoscope.The total accuracy of MRI and clinic/laryngoscope respectively was 92% vs 69%.P<0.05.Conclusion:MRI can correctly depict the original tumors site and invasion extension of laryngeal and hypopharyngeal cancers by comparing T 1WI and T 2WI with multiplanar,consequently improve the accuracy for staging significantly.更多还原