Evaluating the Effectiveness of 2 Different Flow Diverter Stents Based on the Stagnation Region Formation in an Aneurysm Sac Using Lagrangian Coherent Structure

Mutlu O., OLCAY A. B., BİLGİN C., HAKYEMEZ B.

WORLD NEUROSURGERY, vol.127, 2019 (SCI-Expanded) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 127
  • Publication Date: 2019
  • Doi Number: 10.1016/j.wneu.2019.03.255
  • Journal Name: WORLD NEUROSURGERY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: Lagrangian coherent structure, Computational fluid dynamics, Flow diverter stent effectiveness, Stagnated fluid flow zones, INTERNAL CAROTID-ARTERY, NEWTONIAN BLOOD-FLOW, INTRACRANIAL ANEURYSMS, ENDOVASCULAR TREATMENT, CEREBRAL ANEURYSM, FOLLOW-UP, DIVERSION, RECONSTRUCTION, SIMULATION, OCCLUSION
  • Bursa Uludag University Affiliated: Yes

Abstract

BACKGROUND: Flow diverter stents are often used in the treatment of giant aneurysms at carotid arteries. Although these stents promise to decrease blood flow into the aneurysm sac, little is known about hemodynamics inside the aneurysm once the stent is planted into the aneurysm neck. To further explore this, computational fluid dynamics and Lagrangian coherent structure (LCS) techniques were used to evaluate the time evolution mechanism of stagnation regions inside an aneurysm. The purpose of this work is to provide a quantitative effectiveness comparison of 2 different flow diverter stents placed into the aneurysm neck based on their stagnation zone formations in the sac.