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The method of applying this model for clinical use by using the 2‐D image. The aneurysm diameter was measured using a generally accepted method (A). The aspect ratio (vertical diameter (B)/horizontal diameter (C)) was calculated by adapting the ellipse tool to touch both the hypothetical normal aorta and the outer line of the aneurysm. A fillet radius (D) was calculated from the circle fitting the curve of the joint between the aorta and the aneurysm.
