Figure 2.
CT parameters for SG orientation. (A) Aortic arch angle: the angle between the coaxial lines of the ascending aorta at the level of the brachiocephalic artery. (B) Distal DA angle: the angle between the coaxial lines of the DA at the level of the brachiocephalic artery. (C) SG angle: the angle between the coaxial lines of the proximal and distal SG edge. (D) Distal DA angle of SG: the angle between the coaxial line of the distal edge of the SG and vertical line. CT, computed tomography; DA, descending aorta; SG, stent graft.
