Aneurysms that bulge on intracranial carotid arteries can be detected by using medical imaging technologies. Aneurysm, which is detected in this scope of study, is isolated from the rest of the arteries and vessel cloud with the help of Computer Aided Design (CAD) programme. Obtained geometry is transferred into Computational Fluid Dynamics (CFD) with applicable extension. Drop in pressure, velocity values (x, y, z plane) and wall shear stress (WWS) is recorded through the aneurysm and arteries which aneurysm initialize on. At the same time, this study gave us an opportunity to analyze parameters that affect aneurysm and its' around via visual way. We observed homogenous WWS distribution and consistent velocity values in our simulation outputs. In addition, change in pressure through the aneurysm was recorded. As a result, patient specific investigation of hemodynamics parameters in-vivo is a quite challenging problem so that image-based CFD is powerful and convenient tool to acquire mentioned parameters for the diagnosis and treatment procedure.