目的观察多层螺旋CT(MSCT) 联合超声造影(CEUS)在肾肿瘤患者诊断 中的应用价值。方法 对68例肾肿瘤患 者的临床资料进行回顾性分析，均接受 MSCT和CEUS检查，以病理检查为“金标 准”，评估MSCT、CEUS及二者联合检查 对肾肿瘤的诊断效能差异。结果 MSCT联 合CEUS诊断肾肿瘤灵敏度、准确度、阴 性预测值高于MSCT(χ2 =6.993、5.849、 4.350，P＜0.05)。MSCT、CEUS、MSCT联 合CEUS诊断肾肿瘤关联性和优势性均极 有统计学意义，MSCT联合CEUS诊断阳性 检出率高于MSCT(P＜0.05)。结论 MSCT、 CEUS诊断肾肿瘤均具有较高的灵敏度、 特异度、准确度，图像特点明显，两者 联合诊断有助于降低漏诊、误诊率，提 高诊断准确度。

Objective To observe the application values of multi-slice spiral CT (MSCT) combined with contrast-enhanced ultrasound (CEUS) in the diagnosis of patients with renal tumors. Methods The clinical data of 68 cases of patients with renal tumors were retrospectively analyzed. All patients were given MSCT and CEUS examinations. The pathological examination was taken as "gold standard" and the diagnostic efficacies of MSCT, CEUS and combined tests were evaluated. Results The sensitivity, accuracy and negative predictive value of MSCT combined with CEUS were higher than those of MSCT in the diagnosis of renal tumors (χ2 =6.993, 5.849, 4.350, P<0.05). The correlation and superiority of MSCT, CEUS and MSCT combined with CEUS in diagnosis of renal tumors were statistically significant, and the positive detection rate of MSCT combined with CEUS was higher than that of MSCT (P<0.05). Conclusion MSCT and CEUS have high sensitivity, specificity and accuracy and obvious images features in diagnosing renal tumors, and the combined diagnosis can help reduce rates of missed diagnosis and misdiagnosis and improve diagnostic accuracy.