Fig. 2.
Segmentation proposed by Asch et al. ( 1 ) Aortic valve annulus. ( 2 ) Sinus of Valsalva. ( 3 ) Sinotubular junction. ( 4 ) Ascending aorta. ( 5 ) Transverse arch. ( 6 ) Isthmus. ( 7 ) Descending thoracic. ( 8 ) Infrarenal.
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