Navigation aids and real-time deformation modeling for open liver surgery
Marcus Vetter, Ivo Wolf, Peter Hassenpflug, Mark Hastenteufel, Roman Ludwig, Lars Grenacher, Goetz Martin Richter, Waldemar Uhl, Markus W. B�chler, Hans‐Peter Meinzer · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2003
This contribution presents a novel method for image-guided navigation in oncological liver surgery. It enables the perpetuation of the registration for deeply located intrahepatic structures during the resection. For this purpose, navigation aids localizable by an electro-magnetic tracking system are anchored within the liver. Position and orientation data gained from the navigation aids are used to parameterize a real-time deformation model. This approach enables for the first time the real-time monitoring of target structures also in the depth of the intraoperatively deformed liver. The dynamic behavior of the deformation model has been evaluated with a silicon phantom. First experiments have been carried out with pig livers ex vivo.