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Segmentation proposed by Agarwal et al. ( 1 ) Sinus. ( 2 ) Sinoaortic junction. ( 3 ) Mid-ascending aorta. ( 4 ) Proximal aortic arch. ( 5 ) Mid descending aorta. ( 6 ) Aorta at diaphragm. ( 7 ) Abdominal aorta at origin of celiac axis. ( 8 ) Abdominal aorta at the most superior renal artery. ( 9 ) Abdominal aorta at most Inferior renal artery. ( 10 ) Infrarenal abdominal aorta. ( 11 ) Aorta proximal to bifurcation.
