3．OT磁共振腮腺管水成像对腮腺疾病的临床应用

目的：探讨3．0T磁共振水成像（MRS）对腮腺疾病导管显像的临床应用．结合手术及病理结果，评价其对腮腺疾病诊断与治疗的指导意义。方法：对25例临床诊断腮腺疾病患者进行常规扫描后，利用IR-FSE序列进行腮腺导管成像。然后给患者含服VitC于3min后再次扫描。对获得图像按腮腺管及其分支显示效果进行分级及效果评价。结果：25例腮腺病变中．腮腺炎6例，腮腺脓肿l例。腮腺管结石4例，多形性腺瘤10例．腺淋巴瘤2例，T细胞淋巴瘤1例，粘液表皮样癌l例。MRS结果显示，11例非肿瘤性病变中，导管系统变形者8例，占72．7％；14例肿瘤性病变中。导管系统变形者12例，占85．7％。导管系统变形多以2级以上导管改变为主。结论：IR-FSE序列MR腮腺导管成像能较好显示腮腺管及其分支受压、扩张、移位、破坏等征象，对腮腺疾病诊断与治疗具有重要指导意义。

Clinical application of 3. OT 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 com- parsd. Results： It was confirmed by pathology that there were 6 cases of parotitis, 1 case of parotid abscess, 4 cases of sali- vary calculi. 10 cases of pleomorphic adenoma, 2 cases of adenolymphoma, 1 case of T cell lymphoma and 1 case of mucoe- pidermoid 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.