Coanda Effect Displayed in a Giant Intracranial Aneurysm

Area of Science:

• Fluid Dynamics
• Cardiovascular Science
• Neurosurgery

Background:

• The Coanda effect describes a fluid jet adhering to a surface.
• This phenomenon influences fluid behavior in various biological systems, including blood flow in the heart.
• Intracranial aneurysms are vascular malformations with significant clinical implications.

Purpose of the Study:

• To explore the potential role of the Coanda effect in the pathophysiology of intracranial aneurysms.
• To investigate if the Coanda effect contributes to aneurysm formation, progression, or rupture.

Main Methods:

• Analysis of imaging data showing a saccular intracranial aneurysm (4 × 3.75 cm).
• Application of fluid dynamics principles to interpret the observed aneurysm morphology and behavior.

Main Results:

• The observed aneurysm morphology is consistent with the principles of the Coanda effect.
• The Coanda effect may influence the hemodynamic forces within the aneurysm.

Conclusions:

• The Coanda effect is a plausible contributing factor in the development and rupture of intracranial aneurysms.
• Further research into the hemodynamic mechanisms of aneurysms, incorporating the Coanda effect, is warranted.