gms | German Medical Science

57th Annual Meeting of the German Society of Neurosurgery
Joint Meeting with the Japanese Neurosurgical Society

German Society of Neurosurgery (DGNC)

11 - 14 May, Essen

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3D-Visualisation and Simulation of frontoorbital advancement in children with craniosynostosis

3D-Visualisierung und Simulation des frontoorbitalen Advancements bei Kindern mit Kraniosynostose

Meeting Abstract

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  • corresponding author T. Rodt - Abteilung Neurochirurgie, Medizinische Hochschule Hannover
  • A. Schramm - Abteilung Mund-Kiefer-Gesichtschirurgie, Medizinische Hochschule Hannover
  • U. v. Jan - Abteilung Medizinische Informatik, Medizinische Hochschule Hannover
  • A. Schlesinger - Abteilung Neuroradiologie, Medizinische Hochschule Hannover
  • J.K. Krauss - Abteilung Neurochirurgie, Medizinische Hochschule Hannover
  • M. Rittierodt - Abteilung Neurochirurgie, Medizinische Hochschule Hannover

Deutsche Gesellschaft für Neurochirurgie. Japanische Gesellschaft für Neurochirurgie. 57. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie e.V. (DGNC), Joint Meeting mit der Japanischen Gesellschaft für Neurochirurgie. Essen, 11.-14.05.2006. Düsseldorf, Köln: German Medical Science; 2006. DocP 04.50

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/dgnc2006/06dgnc267.shtml

Published: May 8, 2006

© 2006 Rodt et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

Outline

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Objective: In children with cranisynostosis current multi-slice CT-technology allows high-resolution data-acquisition. This data can be used for diagnosis and surgical planning applying computer-assisted 3D-visualisation and surgical simulation software. In this study different post-processing algorithms for 3D-visualisation were evaluated and compared and the feasibility of a technique for surgical simulation was demonstrated.

Methods: Helical multi-slice CT data-acquisition was performed in 15 children with craniosynostosis (100 kV, 50 mA, pitch 3, 1.25 mm collimation). Images were reconstructed using 180 LI interpolation (FOV 23 cm, interval 1.0 mm). Post-processing for 3D-visualisation was performed using commercial and experimental software. Volume and Surface Rendering were applied using different post-processing protocols and compared with respect to the diagnostic benefit. Furthermore 3D-models were created for the purpose of surgical simulation using a newly deceloped software tool. These 3D-models could be used to plan the course of the osteotomies and individually place the different bony fragments by an assigned matrix. Photo-documentation was obtained before and after surgery.

Results: The spatial relationship of the anatomical structures could be assessed using 3D-visualisation. Surface Rendering was superior for visualisation of the bony structures, Volume Rendering allowed visualisation of the cranium along with the surface anatomy. Surgical simulation allowed determination of the osteotomy-course and assessment of the positioning of the individual bony fragments before surgery.

Conclusions: Computer-assisted post-processing and simulation are beneficial for diagnosis and planning before surgery. Post-surgically they document the status and can be used for following procedures that might be necessary. The increased time-effort currently limits the routine-clinical use of the simulation technique, although the developed software significantly reduced the time effort compared to the previously used software.