Hemodynamics of Cerebral Aneurysms: Connecting Medical Imaging and Biomechanical Analysis

Vitaliy L. Rayz, Aaron A. Cohen-Gadol

Research output: Contribution to journalArticle

Abstract

In the last two decades, numerous studies have conducted patient-specific computations of blood flow dynamics in cerebral aneurysms and reported correlations between various hemodynamic metrics and aneurysmal disease progression or treatment outcomes. Nevertheless, intra-aneurysmal flow analysis has not been adopted in current clinical practice, and hemodynamic factors usually are not considered in clinical decision making. This review presents the state of the art in cerebral aneurysm imaging and image-based modeling, discussing the advantages and limitations of each approach and focusing on the translational value of hemodynamic analysis. Combining imaging and modeling data obtained from different flow modalities can improve the accuracy and fidelity of resulting velocity fields and flow-derived factors that are thought to affect aneurysmal disease progression. It is expected that predictive models utilizing hemodynamic factors in combination with patient medical history and morphological data will outperform current risk scores and treatment guidelines. Possible future directions include novel approaches enabling data assimilation and multimodality analysis of cerebral aneurysm hemodynamics.

Original languageEnglish (US)
Pages (from-to)231-256
Number of pages26
JournalAnnual Review of Biomedical Engineering
Volume22
DOIs
StatePublished - Jun 4 2020

Keywords

  • cerebral hemodynamics
  • computational fluid dynamics
  • data fusion
  • image-based modeling
  • modeling uncertainty
  • patient-specific numerical simulations
  • translational research

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Biomedical Engineering

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