Example for measurement of the aortic diameter at level of the left subclavian artery (LSA) with Type B aortic dissention (+).

<p>CT (A) and IVUS (B) measurements at the level of the LSA (*). Penetraiting aortic ulcer (PAU) is shown in IVUS.</p

In more than 40%, intravascular ultrasound (IVUS) leads to a different sizing strategy in aortic stent grafts.

<p>Shown are the distributions for changes in the sizing strategy made by IVUS in Valiant/Relay stent grafts (A) and GORE according to the recommended sizing chart (B). Further subdivision of the increases in stent graft sizes is presented in the smaller, right circles.</p

Example for assessment of aortic remodeling at the inferior edge of the stentgraft with sufficient remodeling (A) and impaired remodeling (B).

<p>A: True lumen (*) is fully expanded, no false lumen is definable. B: False lumen (+) represents almost two-thirds of total aortic area at this intersection.</p

Measurements of true lumen (TL), false lumen (FL) and aortic diameter (AD) in both groups at the distal stent end (DSE), pulmonary artery (PA) and diaphragm (DP).

<p>Measurements of true lumen (TL), false lumen (FL) and aortic diameter (AD) in both groups at the distal stent end (DSE), pulmonary artery (PA) and diaphragm (DP).</p

Patient demographics.

<p>Patient demographics.</p