Clinical application of 3.0T MR sialography in parotid gland diseases

Objective:To approach the clinical application of 3.0 T MR sialography in parotid gland diseases,and get some guidelines for the diagnosis and operation by comparing with the pathology.Methods:25 patients with parotid gland diseases were performed MR sialography by using IR-FSE sequences after common MR scanning.Then 200 mg Vit C were administered keeping in the mouth and MR sialography were performed 3 min later.All images of parotid ducts were comparsd.Results:It was confirmed by pathology that there were 6 cases of parotitis,1 case of parotid abscess,4 cases of salivary calculi,10 cases of pleomorphic adenoma,2 cases of adenolymphoma,1 case of T cell lymphoma and 1 case of mucoepidermoid carcinoma in all the 25 cases of parotid gland diseases.MRS showed that 8 cases of duct deformities in the 11 cases of nontumorous diseases with rate of 72.7%;and 12 cases of duct deformities in the 14 cases of tumorous diseases with rate of 85.7%.Conclusion:MR sialography using IR-FSE sequences can clearly display the main duct and its branches of parotid gland and pathology changes of duct such as narrow,expanded,displace,destruction and stoppage.