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A, Manually created two-dimensional (2D) spline contours along the center lines of the aorta and visceral branches. B, A three-dimensional lofted model from a series of 2D contours. C, Manually created intra-aortic renal graft fabric of 0.5 mm thickness simulating the flared renal stent graft protruding into the aortic lumen. D, Regional mesh refinement demonstrating smaller mesh element size of 0.5 mm (blue arrow) and 1.0 mm (green arrow).
