Precise determination of regions of interest for hepatic RFA planning

Baegert, Claire; Villard, Caroline; Schreck, Pascal; Soler, Luc

doi:doi:10.1117/12.708757

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Proceedings / Volume 6509 / Poster Session: Image Guidance

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Precise determination of regions of interest for hepatic RFA planning

Proc. SPIE 6509, 650923 (2007); http://dx.doi.org/10.1117/12.708757

Sunday 18 February 2007

San Diego, CA, USA

Medical Imaging 2007: Visualization and Image-Guided Procedures

Kevin R. Cleary, Michael I. Miga

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Abstract

Claire Baegert

IRCAD (France) and Lab. des Sciences de l'Image de l'Informatique et de la Télédétection (France)

Caroline Villard and Pascal Schreck

Lab. des Sciences de l'Image de l'Informatique et de la Télédétection (France)

Luc Soler

IRCAD (France)

Percutaneous radiofrequency ablation is one of the most promising alternatives to open surgery for the treatment of liver cancer. This operation is a minimally invasive procedure that consists in inserting a needle in targeted tissues that are destroyed by heat. The success of such an operation mainly depends on the accuracy of the needle insertion, making it possible to destroy the whole tumor, while avoiding damages on other organs and minimizing risks of a local recurrence. We are developing a software that applies planning rules on patient-specific 3D reconstructions, in order to suggest relevant options for the choice of a path to the tumor, and that displays various information allowing to adjust the final choice. In this context we propose a method to compute automatically, quickly, and accurately, the possible insertion areas on the skin. Within these areas, an insertion of the probe targeting the tumor respects the numerous strong (boolean) constraints required for a radiofrequency ablation. Besides, these insertion zones define the research domain of the optimization process, taking into account soft constraints to refine the solutions. They are also displayed on the skin of the virtual patient to inform the physician about the different possibilities specific to each case, allowing him at the end of the automatic process, to modify interactively the proposed strategy, with a real-time update of the related information. We discuss in this paper about the importance of a precise delineation of these areas.

History

Online Mar 22, 2007

Digital Object Identifier

http://dx.doi.org/10.1117/12.708757

Citation

Claire Baegert, Caroline Villard, Pascal Schreck and Luc Soler, "Precise determination of regions of interest for hepatic RFA planning", Proc. SPIE 6509, 650923 (2007); http://dx.doi.org/10.1117/12.708757