Visual support for interactive post-interventional assessment of radiofrequency ablation therapy

Authors:
Christian Rieder;Andreas Weihusen;Christian Schumann;Stephan Zidowitz;Heinz-Otto Peitgen
Affiliations:
Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany;Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany;Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany;Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany;Fraunhofer MEVIS, Institute for Medical Image Computing, Bremen, Germany
Venue:
EuroVis'10 Proceedings of the 12th Eurographics / IEEE - VGTC conference on Visualization
Year:
2010

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Abstract

Percutaneous radiofrequency (RF) ablation is a minimally invasive, image-guided therapy for the treatment of liver tumors. The assessment of the ablation area (coagulation) is performed to verify the treatment success as an essential part of the therapy. Traditionally, pre- and post-interventional CT images are used to visually compare the shape, size, and position of tumor and coagulation. In this work, we present a novel visualization as well as a navigation tool, the so-called tumor map. The tumor map is a pseudo-cylindrical mapping of the tumor surface onto a 2D image. It is used for a combined visualization of all ablation zones of the tumor to allow a reliable therapy assessment. Additionally, the tumor map serves as an interactive tool for intuitive navigation within the 3D volume rendering of the tumor vicinity as well as with familiar 2D viewers.