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30 May 2003 Navigation aids and real-time deformation modeling for open liver surgery
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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.
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Marcus Vetter, Ivo Wolf, Peter Hassenpflug, Mark Hastenteufel, Roman Ludwig, Lars Grenacher M.D., Goetz Martin Richter, Waldemar Uhl M.D., Markus W. Büchler, and Hans-Peter Meinzer "Navigation aids and real-time deformation modeling for open liver surgery", Proc. SPIE 5029, Medical Imaging 2003: Visualization, Image-Guided Procedures, and Display, (30 May 2003);

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