Aortic remodeling after endovascular repair of acute complicated type B aortic dissection

Intravascular ultrasound (IVUS) evaluation of the thoracic aorta. A, The true lumen (TL) is compressed and free floating in the thoracic aorta, and the false lumen (FL) is larger than the TL. IVUS has been used to confirm that the wire is in the true lumen. B, The relationship of the dissection flap/true lumen (TL) to the celiac artery is shown.

Computed tomography angiogram of the aorta. A, Three-dimensional reconstruction of acute aortic dissection shows compressed true lumen. B, Three-dimensional reconstruction shows dissection after placement of endograft. C, Axial image of dissection shows compressed true lumen that is completely detached from the surrounding adventitia. D, Axial image of thoracic aorta in same patient after endografting shows expansion of the true lumen with no flow in the false lumen. E, Axial image shows the celiac axis with compressed true lumen. F, Axial image shows the celiac axis in same patient after placement of proximal endograft. The true lumen has now expanded.

Changes in maximal aortic diameter were significantly different over time. (P = .04).

Changes in maximal true lumen diameter were significantly different over time (P = .004).

Changes in maximal false lumen diameter were significantly different over time (P = .0001).