Analysis of intra-aneurysmal flow for cerebral aneurysms with cerebral angiography.

AJNR. American Journal of Neuroradiology
L-D Jou, M E Mawad

Abstract

Hemodynamics is an important factor in the development and rupture of cerebral aneurysms. Current techniques for measuring blood flow in cerebral aneurysms suffer from various limitations and have not been able to address our clinical needs. A new technique has been developed for effective evaluation of intra-aneurysmal flow based on high-frame-rate cerebral angiography, especially for flow-diverters. Six patients with 7 unruptured ICA aneurysms were imaged with a specially designed DSA protocol (a 3D DSA and a 2D DSA acquired at 30 frames/s, with a 2-mL/s contrast injection rate). Images of these cases were analyzed to determine the intra-aneurysmal flow based on the newly developed technique. Patient-specific aneurysm models were used for CFD calculation, and intra-aneurysmal flow rates were computed numerically. The intra-aneurysmal flow rates from the 2 methods were then compared. There is a linear relationship between intra-aneurysmal flow ratios obtained from high-frame-rate cerebral angiography and CFD calculation (R = 0.99). A high frame rate (30 frames/s) provides a better estimate of intra-aneurysmal flow than low frame rates (7.5 frames/s and 15 frames/s). The CFD calculation validates the estimate of intra-aneurysma...Continue Reading

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Citations

Jun 13, 2017·Interventional Neuroradiology : Journal of Peritherapeutic Neuroradiology, Surgical Procedures and Related Neurosciences·Liang-Der Jou
Nov 15, 2019·Journal of Neurointerventional Surgery·Chander Sadasivan, David Fiorella
Nov 26, 2020·Journal of Magnetic Resonance Imaging : JMRI·Sung Won Youn, Jongmin Lee
Apr 7, 2016·Topics in Magnetic Resonance Imaging : TMRI·Vitor Mendes PereiraMaria Isabel Vargas

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