64排螺旋CT三维重建技术在活体供肾移植中的指导价值

Value of 64-slice spiral CT three-dimensional reconstruction technique in living renal transplantation

目的:探讨64排螺旋CT三维重建技术在活体供肾移植手术中对临床医生的指导价值。方法:对6例拟自愿捐献一侧肾脏给其亲属进行活体肾脏移植的供体进行CT平扫及动脉期、静脉期及延迟期增强扫描,并对增强扫描各期进行多平面重建(MPR)、容积再现技术(VRT)、最大密度投影(MIP)及曲面重建(CPR)等三维后处理。结果:CT血管造影(CTangiography,CTA)显示6例供体中左右肾各见一条肾动脉者3例;左肾见两条肾动脉,右肾见一条肾动脉者1例;左肾见三条肾动脉,右肾见两条肾动脉者2例;所有供体左右肾均见一条肾静脉及一套肾盂输尿管。MPR重建显示左肾囊肿1例。CT尿路成像(CTU)显示双肾功能均未见异常。上述64排螺旋CT三维重建结果经与外科手术对照,符合率100%。结论:64排螺旋CT三维重建技术能基本替代其它影像学检查,成为活体供肾检查的最佳方法。

Objective.. To evaluate the value of 64-slice spiral CT three-dimensional reconstruction technique in living renal transplantation. Methods： Plain CT scan and enhanced scan of the arterial phase, venous phase and delayed phase were applied to 6 cases that voluntarily donated unilateral kidney to their relatives. The enhanced scanning phases were processed with three-dimensional reconstruction techniques including multi-planar reconstruction （MPR）, volume rendering technique （VRT）, maximum intensity projection （MIP） and curved planar reconstruction （CPR）. Results： According to CT angiography （CTA）, a renal artery was presented in each side of kidney for 3 of the 6 cases; 2 renal arteries in the left kidney and one in the right for 1 case; 3 in the left and 2 renal arteries in the right for 2 cases. A renal vein and a set of renal pelvis and ureter were presented in both left and right kidney for all cases. MPR recon-struction technique showed kidney cyst in 1 case, kidney functions for all cases were normal according to CT urography. The above mentioned resuhs shown by 64-slice spiral CT three-dimensional reconstruction techniques were all proven by surgery （100%）. Conclusion： The 64-slice spiral CT three-dimensional reconstruction techniques can basically replace other imaging examinations and can be the best option for living renal transplantation.