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. Author manuscript; available in PMC: 2015 Dec 4.
Published in final edited form as: Radiology. 2014 Jun;271(3):633–652. doi: 10.1148/radiol.14132232

Figure 3.

Figure 3

Limited intimal tear of the ascending aorta. (a) Top: CT angiograms acquired without ECG gating show motion-related irregularity and blurring of ascending aorta. Bottom: ECG-gated CT angiograms obtained 12 hours later reveal an intimal flap in the proximal ascending aorta (arrowhead) consistent with an undermined edge of a limited intimal tear. Immediately superior, the edges of the limited intimal tear (large arrows) and bulging of the disrupted aortic wall (small arrows) are evident. These subtle details are not visible without ECG gating. (b) Volume rendering shows the luminal side of the 6-cm-long lesion. A small undermined flap (arrows) indicates the beginning of the tear, which extends superiorly into the proximal arch. Dotted line = borders of the tear. (Reprinted, with permission, from reference 24.)