1. A method for detecting aneurysms, said method comprising: removing bone structures from three-dimensional (3D) computed tomography (CT) angiography image data; identifying texture based features from the bone removed 3D CT angiography image data; extracting spherical shapes from the bone removed 3D CT angiography image data based on the identified texture based features to identify aneurysms based on the extracted spherical shapes; and displaying the extracted spherical shapes on an image of the 3D CT angiography image data.