Patients will be randomised 3:1 either in the intervention or control group. Intervention consists of using the pre-operative Digital Subtraction Angiography (DSA) to create a 3D plastic model. This model is used to test different sizes of device. At the end of this pre-operative test a single device is recommended for the real procedure. The control group will use the current method for size selection (measurement of mean width and minimum height) on DSA.
This is a preliminary randomised controlled trial comparing the use of pre-operative 3D models to select an intrasaccular flow disruptor for endovascular aneurysm cure.