Cine MRI assessment of aortic aneurysm dynamics before and after endovascular repair.
作者： A.W. Floris Vos , Willem Wisselink , J. Tim Marcus , Anco C. Vahl , Radu A. Manoliu
DOI: 10.1583/1545-1550(2003)010<0433:CMAOAA>2.0.CO;2
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摘要: Purpose:To evaluate stent-graft and aneurysm wall motions during the cardiac cycle using cine magnetic resonance imaging (MRI) to identify mechanisms of long-term failure endovascular repair (EVAR).Methods:Prior after EVAR in 7 patients with abdominal aortic aneurysms (AAA), 12 MRI images per were acquired transverse, sagittal, coronal planes aneurysm. Two independent observers blinded aim study manually traced contours. Translation was defined as maximal displacement contours peak-systolic image compared end-diastolic image. Aneurysm before compared. Stent-graft configuration changes evaluated. The relation between translation degree angulation calculated.Results:The anteroposterior decreased from a median 1.05 mm (range <0.5–1.29) within...
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