Meeting Banner
Abstract #0008

Wall shear stress and velocity pulsatility in the parent artery of an unruptured intracranial aneurysm - a 7T 4D flow MRI study.

Rick J. van Tuijl1, Ynte M. Ruigrok2, Kimberley M. Timmins1, Birgitta K Velthuis1, Pim van Ooij1, Jaco J.M. Zwanenburg1, and Irene C. van der Schaaf1
1Radiology, UMC Utrecht, Utrecht, Netherlands, 2Neurology, UMC Utrecht, Utrecht, Netherlands


The influence of maximum wall shear stress (WSSMAX) and velocity pulsatility (vPI) are extensively investigated in aortic aneurysms, but its influence along the Circle of Willis (CoW) in patients with unruptured intracranial aneurysms (UIA) is unknown. Thirteen patients with an UIA were scanned at 7T-MRI using 4D phase-contrast MRI, comparing hemodynamic parameters between the parent artery of the UIA and the corresponding contralateral artery. The parent vessel of the UIA showed significantly higher WSSMAX, blood-flow and velocity, and lower vPI compared to the unaffected contralateral side. This study supports a hemodynamic role in the aetiology of aneurysm formation.

This abstract and the presentation materials are available to members only; a login is required.

Join Here