3D/2D model-to-image registration applied to TIPS surgery

Abstract

We have developed a novel model-to-image registration technique which aligns a 3-dimensional model of vasculature with two semi-orthogonal fluoroscopic projections. Our vascular registration method is used to intra-operatively initialize the alignment of a catheter and a preoperative vascular model in the context of image-guided TIPS (Transjugular, Intrahepatic, Portosystemic Shunt formation) surgery. Registration optimization is driven by the intensity information from the projection pairs at sample points along the centerlines of the model. Our algorithm shows speed, accuracy and consistency given clinical data. © Springer-Verlag Berlin Heidelberg 2006.