Influence of geometric and hemodynamic parameters on aneurysm visualization during three-dimensional rotational angiography: an in vitro study.

Background And Purpose: Aneurysm depiction with three-dimensional (3D) rotational angiography is influenced by investigator-defined parameters such as image acquisition and contrast agent injection and by the hemodynamic pattern in the parent artery and aneurysm. To assess the impact of the geometric configuration of parent artery and aneurysm on the 3D visualization of saccular aneurysms, we studied silicone aneurysm models under pulsatile-flow conditions.

Methods: Rotational angiography was performed in three bifurcation and three lateral aneurysm models with ostia of different widths.