J Korean Soc Radiol.  2017 Sep;77(3):133-142. 10.3348/jksr.2017.77.3.133.

Computational Fluid Dynamics: Comparison of Prototype and Commercial Solutions for Intracranial Aneurysms with Different Entrance Length

• Park ST
• Ko YB

• KMID: 2405727
• DOI: http://doi.org/10.3348/jksr.2017.77.3.133

Abstract

PURPOSE
The aim of this study is to evaluate the influence of entrance length into computational fluid dynamics (CFD), for distal internal carotid artery (ICA) aneurysms.
MATERIALS AND METHODS
Two different solutions were used: Siemens prototype software (SW; prototype, not commercially available) and the package of commercial CFD SW (commercials). Twelve models of aneurysm at the distal ICA were obtained from three dimensional angiography. The original models had longer entrance lengths from the cervical segment of ICA, whereas intracranial (IC) model lengths were shorter from the proximal cavernous ICA.
RESULTS
The prototype showed faster flow than the commercial CFD, when comparing the maximum value on a velocity scale. Visualization of pathline within the aneurysm sac was seen well by the prototype, except one original model which showed a pathline leak. With IC models, both tools showed high correlation with the flow velocity.
CONCLUSION
We believe that the CFD might be influenced by different solvers and entrance length of distal ICA aneurysm models.

MeSH Terms

Aneurysm
Angiography
Carotid Artery, Internal
Cerebral Angiography
Hemodynamics
Hydrodynamics*
Intracranial Aneurysm*