医学毕业论文--双源CT血管成像对肾移植术前肾活体供体的评估.doc

PAGE \* MERGEFORMAT 1 双源CT血管成像对肾移植术前肾活体供体的评估 作者：白林 蒲红 彭泽华 高燕 陶客言 【摘要】目的 探讨双源CT血管成像对肾移植术前肾活体供体评估的价值。方法 使用双源CT对32例受检者行尿路的增强动态扫描，采集肾动脉期、静脉期及排泄期的影像数据，进行MPR、MIP及VR等后处理。评估肾血管的解剖结构及变异，肾实质及上尿路的形态、功能。结果 双源CT血管成像清晰显示了肾血管、肾实质及上尿路影像。25例双肾动脉均为单支，7例发生变异（异位肾动脉1例，肾动脉多支变异伴副肾动脉1例，副肾动脉2例，副肾动脉与肾动脉早期分支并存2例），肾动脉狭窄1例；28例双肾静脉为单支，4例变异（右肾双支静脉伴左肾静脉走行异常1例，双肾副肾静脉1例，右副肾静脉2例）；27例肾实质正常，左肾萎缩2例，小囊肿2例，肌脂瘤1例；30例尿路显影正常。结论 双源CT血管成像具有快速、高分辨成像的优势，超越常规多层螺旋CT（MDCT）的影像后处理功能，能为肾移植术前全面、准确地评估活体供体提供可靠的依据。 【关键词】双源CT血管成像 影像处理 肾移植术 活体供体 【Abstract】Objective To evaluation the value of The reconstruction technique of Dual-source CT angiography (DSCTA) for preoperative evaluation of living renal donors. Methods 32 cases of renal living donors underwent enhanced scanning of the kidneys and the uninary with DSCT ,imaging data of the artery-period,veins-period,excrete-period were reconstructed by volume rendering(VR),maximum intensity projection(MIP),multiplanar reconstructon (MPR) techniques, the anatomical locations and variation of renal arteries and veins were assessed, so du the morphology and function of the kidneys and the uninary. Results Imagings of the renal blood vessels,substance and uninary were displayed with high-resolution. 25 cases have normal renal arteries, 7 cases of renal arteries were happened variation（1 case of arteries variation with different origin was found, 1 case of multi-vessel variation of renal arteries with accessory arteries, 2 cases of accessory arteries were found，2 cases of accessory arteries combined with early branching of the arteries were found）.Stenosis of renal arteries were found in one case. renal veins were displayed with normal in 28 cases, 4 cases were found variation (double right renal veins and variation of the course with the left renal vein was found in 1 case, left and right accessory veins were found in 1 case, right accessory veins were found in 2 cases). Renal parenchymas were displayed with normal in 27 cases, atrophy of left kidneys were found in 2 cases,