Haptics-Assisted Cranio-Maxillofacial Surgery Planning using Interactive 3D Image Segmentation and Visualisation


Ingela Nyström, Division of Visual Information and Interaction, Dept. of IT, UU

Andreas Thor, Oral & Maxillofacial Surgery, Dept. of Surgical Sciences, UU


We will present a surgery planning system developed during the past decade in a research collaboration between the Centre for Image Analysis and the units of Oral & Maxillofacial Surgery at Uppsala University Hospital and Mount Sinai Hospital, New York.

Cranio-maxillofacial surgery to restore normal skeletal anatomy in facial trauma or tumor patients is often complex and time-consuming. Better results will in general be obtained with careful pre-operative planning, and in reduced operating time. Our advanced image analysis methods enable analysis, planning, and pre-operative testing of alternative solutions for restoring bone fragments to their proper positions in a virtual model derived from patient-specific CT data. The system offers the surgeon accurate visual spatial perception with GPU-based volume renderings in real-time interaction. In addition, the haptics guides the surgeon by providing intuitive contact forces when aligning bone fragments.

Today, the system is used in clinical research and is being exposed for entrepreneurship.