【摘要】 目的：探讨64排螺旋CT常规及增强检查在涎腺占位性病变的诊断和鉴别诊断中的临床意义。方法：选取2015年8月-2019年8月笔者所在医院收治的涎腺肿瘤患者69例。对所有患者行64排螺旋CT常规及增强检查，对比不同组织的影像学参数。结果：平扫可见涎腺肿瘤病灶均为等密度或低密度影，不同肿瘤间的CT值差异无统计学意义(P>0.05)。进行双期增强扫描可见，多形性腺瘤动脉期无强化或轻度强化，静脉期强化程度高于动脉期;腺淋巴瘤呈“快进快出”的强化特征;基底细胞瘤动脉期和静脉期均有显著强化;肌上皮瘤动、静脉期均有轻度强化;黏液表皮样癌、腮腺细胞癌和涎腺导管癌等恶性肿瘤则为延迟显著渐进强化特点。在动脉期，腺淋巴瘤的CT值明显高于其他肿瘤，在静脉期，则恶性肿瘤的CT值最高，差异均有统计学意义(P0.05). Double phase contrast-enhanced scan showed that pleomorphic adenoma had no or slight enhancement in arterial phase， and the enhancement degree in venous phase was higher than that in arterial phase; adenolymphoma had the characteristics of “fast in and fast out”; basal cell tumor had significant enhancement in arterial phase and venous phase; myoepithelioma had slight enhancement in arterial and venous phase; mucoepidermoid carcinoma， parotid cell carcinoma， salivary duct carcinoma and other malignant tumors were characterized by delayed and progressive enhancement. In arterial phase， the CT value of adenolymphoma was significantly higher than that of other tumors. In venous phase， the CT value of malignant tumors was the highest， the differences were statistically significant (P, 百拇医药(陈巍岚 马兴灿 郭作梁) 第 1 2 3 页 下一页

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