Three-dimension reconstruction
As shown in Figure 1 , the three-dimension reconstruction model was based on the specific position of the aorta drawn on the coronal, sagittal, and transverse planes of CTA. The reconstruction model of the preoperative and postoperative aorta is shown in Figure 2 , including postoperative models of the aorta implanted with 80mm, 100mm, 120mm, and 150mm FETs. The morphological volume of the descending aorta FL in the long FET group (120mm and 150mm) was significantly reduced compared to the short FET group (80mm and 100mm).