Fig. 2

45-year-old female patient with iliofemoral malperfusion syndrome of the left leg due to acute type B aortic dissection. a Preinterventional color-coded composite image demonstrates the dissection membrane affecting the distal abdominal aorta and extending in the left common iliac artery. Color gradient in the left proximal iliac segment indicates compromised blood flow with colder color gradients compared to the contralateral vessel axis. Corresponding TTP was 6.91 s. b After creation of a fenestration window at the level above the aortic bifurcation, improvement of the color gradient is demonstrated, with a TTP value of 4.44 s. Morphological improvement of vessel anatomy is also shown. Corresponding manometry did not demonstrate an improvement of the intraluminal blood pressure gradient (prior fenestration 0 mmHg; following fenestration 3 mmHg)