Presence of a proximal radial loop | See figure 1. |
Diameter of aortic arch (mm) | The diameter of the aorta was measured at the apex of its curvature in the aortic arch |
Type of aortic arch | Describes the anatomy of the aortic arch (type 1, 2, or 3) |
Presence of bovine anatomy | Describes when the left common carotid artery arises from a shared origin with the innominate artery |
Presence of a common carotid (left or right) proximal loop | A loop within the proximal common carotid artery |
Presence of a vertebral artery (left or right) proximal loop | A loop within the proximal vertebral artery |
Presence of single subclavian innominate curve | A loop within the proximal subclavian and distal innominate artery |
Presence of double subclavian innominate curve | See figure 1. |
Angle of innominate subclavian primary curve | The angle between the proximal subclavian artery and its origin from the innominate artery (figure 1) |
Angle of innominate subclavian secondary curve | The angle between the subclavian artery just proximal to the origin of the innominate artery and the secondary curve of the innominate artery (figure 1) |
Length of innominate artery (mm) | The length of the innominate artery |
Subclavian vertebral angle (right and left) | The angle between the lateral wall of the vertebral artery origin and the superior wall of the subclavian proximal to the vertebral artery origin |
Innominate aortic angle | The angle between the aortic arch and the origin of the innominate artery |