Clinical Value about MRI Dynamic Enhancement,~(18)F-FDG PET/CT Imaging Applied to Early Diagnosis of Recurrent and Fibrosis of Nasopharyngeal Carcinoma after Radiotherapy

Objective:To analyze the value about MRI dynamic enhancement,18F-FDG PET/CT imaging applied to early diagnosis of recurrent and fibrosis of nasopharyngeal carcinoma after radiotherapy.Method:37 patients with nasopharyngeal carcinoma and in suspected recurrence after radiotherapy were chosen from August 2005 to August 2011,all were tested by MRI dynamic enhancement and 18F-FDG PET/CT imaging,then compared sensitivity,specificity,accuracy and the test fee of the two kinds of detection methods.Result:The detection sensitivity of the MRI was 93.8%,the specificity was 93.8% and the accuracy was 95.5%;and the detection sensitivity of the PET/CT was 87.5%,the specificity was 91.3% and the accuracy was 90.2%;the detection sensitivity of MRI was higher(P0.05);there had no significant differences on the specificity and accuracy,and there was no significant difference on the test fee(P0.05).Conclusion:There has certain value about MRI dynamic enhancement,18F-FDG PET/CT imaging applies to early diagnosis of recurrent and fibrosis of nasopharyngeal carcinoma after radiotherapy,but all have limitations meanwhile;the diagnostic value can improve by joint application.