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目的探讨CT和MRI两种影像学检查方法在口腔及口咽部病变中的诊断价值。方法选取80例口腔口咽部病变患者作为研究对象，随机分为研究组和对照组，每组各40例，研究组患者采用MRI检查技术，对照组患者采用CT检查技术，比较两种影像学检查方法在恶性肿瘤中的诊断符合率和影像学表现。结果研究组在恶性肿瘤中的诊断符合率为82.61%，与对照组的72.73%无明显差异(跃0.05)；采用MR检查方式显示肿瘤侵犯临近结构和深部结构均优于采用CT显示的结果。结论在口腔及口咽部病变的诊断中，采用MRI检查和CT检查均具有重要价值，两种检查方式在恶性肿瘤中的诊断符合率相当，但采用MRI检查方式在显示肿瘤侵犯临近结构和深部结构上更具优势。“,”Objective To compare the value contrast analysis of CT and MRI diagnosis of oral and oropharyngeal diseases.Methods Selected 80 patients who suf ered from the oral and oropharyngeal diseases and who were taken as the research objects,and these patients were randomly divided into the control group and the study group,with 40 patients in each group.In the study group,they were diagnosed by MRI while in the control group,they were diagnosed by CT.Then,the coincidence rate and imaging features of the two diagnostic methods were compared.Results The diagnostic coincidence rate in the study group was 82.61%,and in the control group was 72.73%,which had no the control group (72.73%).MRI diagnosis is used to display tumor invasion near the structure and deep structure were bet er than that used the CT diagnostic.Conclusion In the diagnosis of oral and oropharyngeal,the diagnosis value of MRI and CT in the diagnosis has important value,two kinds of diagnosis diagnosis accord with rate,but the use of MRI diagnosis in showing the tumor invades adjacent structure and deep structure has more advantages.