Comparison of ultrasonography and MR imaging in diagnosing and staging of laryngeal carcinoma

Objective: To compare the value of ultrasonography and MR imaging in diagnosing and T-staging of laryngeal carcinoma.Methods: Ultrasonography and MRI were performed in thirty-six patients with laryngocarcinoma.Histopathologic and surgery findings were performed to validate imaging findings.Results: In 36 patients with laryngeal carcinoma,34 cases were found by ultrasonography,32 cases were detected on MRI.The accuracy of ultrasonography and MRI in the diagnosis of T1,T2,T3,T4 staging laryngocarcinoma were 90.9%,60.0%,87.5%,85.7% and 63.6%,70.0%,75.0%,100%,respectively.There were no statistical differences observed in accuracy rating between ultrasonography and MRI(χ2 were 2.329,0.220,0.410,1.077,respectively,all P0.10).The overall accuracy rating in T-staging was 80.6% for ultrasonography,and was 75.0% for MRI.There was no significant difference between the two methods in overall T-staging accuracy rating(χ2=0.321,P=0.778).Conclusions: Ultrasonography can provide adequate information with the location,size and infiltration of laryngeal carcinoma,it is a complementary method for laryngoscopy,CT and MR imaging assessment of laryngeal carcinoma.