目的探讨CT及MRI检查对腮腺混 合瘤的检查方法及诊断价值。方法 对28 例腮腺混合瘤进行CT或MRI平扫及增强检 查，MRI检查行多序列并DWI成像。然后对 病变征象进行分析诊断。结果 28例患者 共检查出29个病灶。病灶均表现为边界 清楚的肿块，病灶直径小者约1.2cm,大者 3.9cm，形态为圆形或卵圆形。27个患者 为单侧发病，1个患者为两侧发病；右侧 12个病灶，左侧17个病灶。12个患者行CT 平扫并增强扫描，16个患者行MRI平扫并 增强检查，其中4例患者既行CT检查又行 MRI检查。结论 CT或MRI对腮腺混合瘤的 检查，方法简便，快捷，且具有相对特征 性影像学表现，对临床定性诊断及治疗有 重要指导价值。

Objective To investigate the application value of CT and MRI examination on diagnosis of parotid mixed tumor. Methods 28 cases of patients with parotid mixed tumor underwent CT plain and enhanced scan or MRI plain and enhanced scan, MRI examination using multiple sequence including DWI. Then the diagnosis and analysis was carried on lesion signs. Results 29 lesions were found. Lesion manifestations were a clear boundary mass, sized from1.2 cm to 3.9 cm,round or ovoid shaped. 27 cases showed unilateral onset, and the other one was in both sides.12 lesions were located in the right side, and the other 17 lesions were located in the left side. The 12 patients underwent CT plain and enhanced scan,16 patients taken MRI plain and enhanced scan,and the other were both examination. Conclusions CT or MRI scan in mixed parotid tumor, is simple、rapid, and imaging findings is relatively characteristic, having the important guiding value on the qualitative diagnosis and clinical treatment of the disease.