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Proceedings Paper

Computer-aided osteotomy design for harvesting autologous bone grafts in reconstructive surgery
Author(s): Zdzislaw Krol; Peter Zerfass; Bartosz von Rymon-Lipinski; Thomas Jansen; Wolfgang Hauck; Hans-Florian Uli Zeilhofer; Robert Sader; Erwin Keeve
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Paper Abstract

Autologous grafts serve as the standard grafting material in the treatment of maxillofacial bone tumors, traumatic defects or congenital malformations. The pre-selection of a donor site depends primarily on the morphological fit of the available bone mass and the shape of the part that has to be transplanted. To achieve sufficient incorporation of the autograft into the host bone, precise planning and simulation of the surgical intervention based on 3D CT studies is required. This paper presents a method to identify an optimal donor site by performing an optimization of appropriate similarity measures between donor region and a given transplant. At the initial stage the surgeon has to delineate the osteotomy border lines in the template CT data set and to define a set of constraints for the optimization of appropriate similarity measures between donor region and a given transplant. At the initial stage the surgeon has to delineate the osteotomy border lines in the template CT data set and to define a set of constraints for the optimization task in the donor site CT data set. The following fully automatic optimization stage delivers a set of sub-optimal and optimal donor sites for a given template. All generated solutions can be explored interactively on the computer display using an efficient graphical interface. Reconstructive operations supported by our system were performed on 28 patients. We found that the operation time can be considerably shortened by this approach.

Paper Details

Date Published: 28 May 2001
PDF: 8 pages
Proc. SPIE 4319, Medical Imaging 2001: Visualization, Display, and Image-Guided Procedures, (28 May 2001); doi: 10.1117/12.428062
Show Author Affiliations
Zdzislaw Krol, Ctr. for Advanced European Studies and Research (Germany)
Peter Zerfass, Ctr. for Advanced European Studies and Research (Germany)
Bartosz von Rymon-Lipinski, Ctr. for Advanced European Studies and Research (Germany)
Thomas Jansen, Ctr. for Advanced European Studies and Research (Germany)
Wolfgang Hauck, Munich Univ. of Technology (Germany)
Hans-Florian Uli Zeilhofer, Munich Univ. of Technology (Germany)
Robert Sader, Munich Univ. of Technology (Germany)
Erwin Keeve, Ctr. for Advanced European Studies and Research (Germany)


Published in SPIE Proceedings Vol. 4319:
Medical Imaging 2001: Visualization, Display, and Image-Guided Procedures
Seong Ki Mun, Editor(s)

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