三维动态增强MR血管成像在显示下肢动脉硬化闭塞症侧支循环形成中的应用价值  

3D CE-MRA for lower extremity arteriosclerosis obliterans collateral circulation

作　　者：郭娟[1,2] 王效春[3] 张辉[3] 王乐[3] 秦江波[3] 

机构地区：[1]山西医学科学院 [2]山西大医院磁共振室,太原030032 [3]山西医科大学第一医院磁共振室,太原030001

出　　处：《磁共振成像》2012年第3期200-203,共4页Chinese Journal of Magnetic Resonance Imaging

摘　　要：目的评价三维动态增强MR血管成像(three-dimensional dynamic contrast-enhanced magnetic resonance angiography,3D CE-MRA)在显示下肢动脉硬化闭塞症病变血管周围侧支循环形成中的价值。方法 29例数字减影血管造影(digital subtraction angiography,DSA)或(和)手术证实的下肢动脉硬化闭塞症患者,术前行下肢动脉3D CE-MRA检查。扫描范围包括双侧髂总动脉、髂内动脉、髂外动脉、股总动脉、股深动脉、股浅动脉、腘动脉、胫前动脉、胫后动脉、腓动脉。3D CE-MRA扫描采用连续移床采集法,高压注射30ml Gd-DTPA对比剂,将采集到的图像进行最大密度投影(maximum intensity projection,MIP)。3D CE-MRA与DSA和(或)手术结果对比,分析其在显示病变血管周围侧支循环中的应用价值。结果 29例下肢动脉硬化闭塞症患者均成功行3D CE-MRA扫描,图像显示清晰,无静脉污染。3D CE-MRA共检查580段血管,病变血管318段。205段病变血管周围没有侧支循环形成,113段病变血管周围形成侧支循环,其中髂外动脉15段,股总动脉15段,股深动脉27段,股浅动脉31段,胫前动脉25段。结论 3D CE-MRA在评价下肢动脉硬化闭塞症侧支循环形成中具有重要意义。Objective： To evaluate three-dimensional dynamic contrast-enhanced magnetic resonance angiography （3D CE-MRA） in the display of lower extremity collateral circulation of arteriosclerosis obliterans （ASO）. Materials and Methods： Twenty-nine patients with ASO were recruited with analysis of 3D CE-MRA. The arteries included bilateral common iliac artery, internal and external iliac artery, common femoral artery, deep and superficial femoral artery, popliteal arteries, anterior and posterior tibial artery and peroneal artery were analyzed and compared with that of the controls. Results： There were 318 lesions including 113 collateral circulation, 15 external iliac arteries, 15 common femoral arteries, 27 deep femoral arteries, 31 superficial femoral arteries, and 25 anterior tibial arteries. Conclusion： 3D CE-MRA is helpful to display the collateral circulation in ASO of lower extremity.

关 键 词：下肢 动脉硬化 闭塞性 侧支循环 磁共振成像 

分 类 号：R445.2[医药卫生—影像医学与核医学] R826.68[医药卫生—诊断学]