Fig. 1. a.

The evaluated false lumen complete thrombosis rate and the ratio of true lumen area at three levels of bronchial carina (1), aortic valve (2), and diaphragm (3). b The false lumen was not enhanced, and therefore defined as “complete thrombosis.” The ratio of true lumen was 55.8%, which was calculated by dividing the traced area of true lumen (red line circle, 750 mm²) by the traced area of the whole aorta (dotted line circle, 1350 mm²). c The false lumen was enhanced, and therefore defined as patent false lumen. The ratio of true lumen was 17.2% (240/1395 mm²)