Figure 1.

Post contrast sagital-oblique reformat (a) and axial (b) CT images of the present case. a CT image of type A aortic dissection with the intimal flap shown as an unopacified, partially calcified line within the aortic lumen (arrowheads), separating the true lumen from the false and extending from the ascending to the descending aorta. b An axial image at the level of the cricoid cartilage shows the two common carotid arteries (arrows). The left external carotid artery is fully opacified, whereas the right one shows only minimal rim enhancement as the dissection involves its origin