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In vitro validation of flow measurements in an aortic nitinol stent graft by velocity-encoded MRI

Fabian Rengier , Michael Delles , Tim Frederik Webr, Dittmar Böckler, Sebastian Ley, Hans-Ulrich Ka(2010-08)

图片数-(4) 查看-(2665) 下载-(5) 关键字-Magneticresonanceimaging;Bloodflowvelocity 所属分类-影像学研究 
Purpose: To validate flow measurements within an aortic nickel–titanium (nitinol) stent graft using velocity-encoded cine magnetic resonance imaging (VEC MRI) and to assess intraobserver agreement of repeated flow measurements. Materials and methods: An elastic tube phantom mimicking the descending aorta was developed with the possibility to insert an aortic nitinol stent graft. Different flow patterns (constant, sinusoidal and pulsatile aortic flow) were applied by a gear pump. A two-dimensiona

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