Breuckmann Frank, Nassenstein Kai, Boese Dirk, Opherk Dieter, Quick Harald H, Barkhausen Jörg, Erbel Raimund
Department of Cardiology, West German Heart Center Essen, University of Duisburg-Essen, Essen, Germany.
Int J Cardiovasc Imaging. 2006 Jun-Aug;22(3-4):501-5. doi: 10.1007/s10554-005-9058-3. Epub 2006 Mar 4.
Nitinol stents are thought to exhibit reduced occurrence of artifacts and may be suitable for magnetic resonance imaging (MRI) evaluation of stent localization and in-stent patency even in coronary-sized stent grafts. A 54-year-old male patient presented with a large coronary post-stenotic aneurysm of the right coronary artery (RCA) beside significant stenoses of the left circumflex coronary artery (LCX) and the left anterior descending coronary artery (LAD) with aneurysm formation. After implantation of stent grafts to the LAD and LCX, two polymermembrane-covered nitinol stent grafts were placed into the RCA. A control MR examination 7 days following the RCA intervention showed successful occlusion of the former aneurysm, no post-interventional endoleak, and bright signal within the stent indicating stent patency. Thus, coronary MRI after nitinol stent implantation in coronary aneurysms is feasible for post-interventional early imaging control at least as far as the exclusion of possible endoleaks is concerned.
人们认为镍钛诺支架产生伪影的情况较少，即使是冠状动脉尺寸的支架移植物，也可能适用于支架定位及支架内通畅情况的磁共振成像（MRI）评估。一名54岁男性患者，除左回旋支冠状动脉（LCX）和左前降支冠状动脉（LAD）存在明显狭窄并形成动脉瘤外，右冠状动脉（RCA）还出现了一个较大的冠状动脉狭窄后动脉瘤。在LAD和LCX植入支架移植物后，将两个聚合物膜覆盖的镍钛诺支架移植物置入RCA。RCA介入治疗7天后的对照磁共振检查显示，先前的动脉瘤成功闭塞，无介入后内漏，支架内信号明亮，表明支架通畅。因此，在冠状动脉瘤中植入镍钛诺支架后进行冠状动脉MRI检查，至少就排除可能的内漏而言，对于介入后早期成像控制是可行的。
