Tetrahedral vs. polyhedral mesh size evaluation on flow velocity and wall shear stress for cerebral hemodynamic simulation

• Published in: Computer methods in biomechanics and biomedical engineering Vol. 14; no. 1; pp. 9 - 22
• Main Authors: Spiegel, Martin, Redel, Thomas, Zhang, Y. Jonathan, Struffert, Tobias, Hornegger, Joachim, Grossman, Robert G., Doerfler, Arnd, Karmonik, Christof
• Format: Journal Article
• Language: English
• Published: England Taylor & Francis Group 01.01.2011
• Subjects: Aneurysm; Angiography; blood flow velocity; Boundary layers; Brain - blood supply; Computer applications; Computer Simulation; Convergence; Hemodynamics; Humans; Intracranial Aneurysm - physiopathology; Mathematical models; Mechanical properties; Mechanical stimuli; mesh independence analysis; mesh size evaluation; Polyhedra; polyhedral; Rupture; Saccule; Stress, Physiological; Subtraction Technique; tetrahedral; Therapeutic applications; wall shear stress

Haemodynamic factors, in particular wall shear stresses (WSSs) may have significant impact on growth and rupture of cerebral aneurysms. Without a means to measure WSS reliably in vivo, computational fluid dynamic (CFD) simulations are frequently employed to visualise and quantify blood flow from pat...