BACKGROUND: The rupture of aneurysm is quite common in the clinics, and is hazardous to patients. Its occurrence is considered to be related to the hemodynamic abnormalities.
OBJECTIVE: To construct the model of internal carotid artery aneurysm(ICA-A), and have a simulation of blood flow.
METHODS: Based on the CTA data from spiral CT scan, the ICA-A model was constructed, and the types of blood flow, wall shear stress (WSS), Von Mises stress (VMS) and pressure were simulated and calculated.
RESULTS: ICA-A model has been built and shape is the same morphology as CT 3D-image. In the whole cardiac cycle, the blood flow of aneurysm body is swirl, its velocity is slower than that of aneurysm neck; the maximum deformation, wall shear stress, pressure and von mises stress of aneurysm wall is at the neck, the minimum is at the top. The highest value appeared at 0.52 s in the cardiac cycle of 0.74 s, the lowest is at 0.21 s.
CONCLUSIONS: It is effective and practical to construct the model of ICA-A base on CTA data. Blood flow simulation of ICA-A will provide new basis for the study on the occurrence and development of aneurysm.
