Incomplete endograft apposition to the aortic arch: bird-beak configuration increases risk of endoleak formation after thoracic endovascular aortic repair.

Ueda T, Fleischmann D, Dake MD, Rubin GD, Sze DY. "Incomplete endograft apposition to the aortic arch: bird-beak configuration increases risk of endoleak formation after thoracic endovascular aortic repair." Radiology. 2010;255(2):645-52.