目的 探讨CT肾集合系统及肾动脉联合成像技术在复杂性肾结石微创PCNL术前评价的应用价值。方法 将复杂性肾结 石行微创PCNL患者80例分2组：实验组40例，常规术前检查外，加作CT肾集合系统及肾动脉联合成像技术检查;对照 组40例，术前只进行常规检查。对比两组手术时间、结石清除率及严重并发症发生率。结果 实验组与对照组手术 时间分别为（75±30）min、（100±30）min，结石清除率分别为90％、82.5%，严重并发症发生率分别为0、5%； 结论 CT肾集合系统及肾动脉联合成像技术能较好显示结石与肾集合系统及肾动脉的解剖关系，对缩短复杂性肾结 石微创手术时间、提高清除率和降低严重并发症发生率有重要临床意义。

Objective To investigate the value in evaluation before microtrauma PCNL operation for complex renal stone patients who took the renal collecting system and renal artery joint image-forming technology of CT. Methods Divided patients of complex renal stone who took the microtrauma PCNL into 2 groups: test group:40 cases,except the conventional examination before operation,we still took the CT examination with the joint image-forming technology of renal collecting system and renal artery; contrast group:40 cases, only did the conventional examination before operation. To compare two groups’operation time, stone clearance rate and the incidence rate of serious complication. Results operation time of test group and contrast group is (75±30)min, (100±30)min,stone clearance rate is 90%, 82.5%,both groups’ incidence rate of serious complication is 0, 5%; Conclusion Renal collecting system and renal artery joint image-forming technology of CT can be clear to display anatomy relationship among stone, renal collecting system and renal artery,it has very important clinical significance in shortening time of complex renal stone’s microtrauma operation, raise the clearance rate and reduce the incidence rate of serious complication.