智能化血管跟踪MRA在胰肾联合移植中的应用

Application of smart prep MRA in simultaneous pancreas kidney transplantation

目的 :探讨智能化血管跟踪MRA在胰肾联合移植 (SPKT)中的应用。方法 :搜集我院SPKT病例 5例 ,采用GE 1.5TMR扫描机 ,先行常规扫描 ,再行MRCP和MRU检查。在此基础上行SmartPrepMRA成像。所有智能化血管跟踪MRA的源影像均采用IVI软件包进行分析处理。结果 :5例SPKT的智能化血管跟踪MRA的腹主动脉远端、髂内外动脉、主要移植动脉及其 1～ 2级分支均清晰显示 ,其中 3例患者血管异常被DSA证实。 1例胰腺急性排斥反应者显示胰腺分支血管闭塞 ,另 1例显示脾动脉的动脉瘤形成及血管连接处和胰十二指肠下动脉的近端狭窄。第 3例为急性肾脏排斥反应伴肾梗死者显示肾动脉的近端及远端血管闭塞。结论 :智能化血管跟踪MRA能显著提高动脉的信噪比 ,减少流动伪影 。

Objective:To investigate the application of Smart Prep MRA in simultaneous pancreas kidney transplantation (SPKT).Methods:5 cases with SPKT were collected from Jan,2001 to June,2002.All cases underwent Smart Prep MRA based on MRCP and MRU following conventional MR examination.All source images of Smart Prep MRA were handled with IVI software package.Results:Distal end of the abdominal aorta,internal and external iliac arteries,major transplanted arteries and their first and second level branches all were well demonstrated.Among them,3 cases with abnormality of blood vessels shown by Smart Prep MRA were confirmed by DSA.MRA documented occlusion of vascular branches of pancreas in 1 case with acute rejection of pancreas transplantation,and aneurysm of splenic artery and stenoses of blood vessels anastomosis and proximal end of inferior pancreaticoduodenal artery in another one,as well as the occlusion of the distal end and proximal end of renal arteries due to acute rejection of kidney and resultant renal infarction in the third case.Conclusion:Smart Prep MRA can increase significantly the S/N ratio of the avteries,decrease flowing artifacts and improve the image qualities of MRA.