Comparison of CT and MRI in Diagnosing Nasopharyngeal Carcinoma

Objective: To conduct a comparative analysis on the diagnostic effects between CT scan and MRI in diagnosing local invasion of nasopharyngeal carcinoma(NPC).Method: Preliminary diagnosis data of the patients who were definitely diagnosed with NPC at pathological test in our hospital were sorted out.71 cases of patients who had undergone both CT scan and MRI before the treatment were selected.Comparative analysis was performed on the images of nasopharyngeal sites by several experts,to obtain a statistic result for the detection rates of invasion for both imaging techniques.Result: For the imaging diagnosis of nasopharyngeal invasion,the detection rate of CT scan was 43.6%(31 /71),while that of MRI was 70.4%(50 /71).For the imaging diagnosis of local invasion to basis cranii,the detection rate of CT scan was 22.5%(16 / 71),while that of MRI was 56.3%(40 /71).Conclusion: MRI result appeared to be a preferential imaging technique in diagnosing local invasion for the patients with NPC.The detection rates of nasopharyngeal invasion and local invasion to basis cranii with MRI scan are both higher than those with CT scan.