ProjectStent

Chair for Computer Aided Medical Procedures & Augmented Reality
Lehrstuhl für Informatikanwendungen in der Medizin & Augmented Reality

Endovascular Stenting of Aortic Aneurysms

Endovascular Stenting of Aortic Aneurysms

In medical collaboration with:
Deutsches Herzzentrum München (TUM)
St. Olavs Hospital (NTNU, Norway)

In academic collaboration with:
Chair for Numerical Mechanics (TUM)
St. Olavs Hospital (NTNU, Norway)

Scientific Director: Nassir Navab

Contact Person(s): Stefanie Demirci
Oliver Kutter

Keywords: Computer-Aided Surgery

Abstract

Endovascular stenting is a minimally invasive treatment technique for aortic aneurysms or dissections. Thereby, a certain aortic prosthesis (stent graft) is placed inside the aortic aneurysm in order to prevent a life-threatening rupture of the aortic wall. Prior to the intervention, a computed tomography angiography (CTA) is acquired on which the surgical staff can measure the parameter of the desired stent graft and finalize the intervention workflow. The entire interventional catheter navigation is done under 2D angiography imaging where the physician is missing the important 3D information. The purpose of our project is two-fold:
1. In the planning phase, a modified graph cuts algorithm automatically segments the aorta and aneurysm, so the surgical staff can choose an appropriate type of stent to match the segmented location, length, and diameter of the aneurysm and aorta. By visualizing the defined stent graft next to the three-dimensionally reconstructed aneurysm, mismeasurements can be detected in an early stage. Our main goal is the creation of an interactive simulation system that predicts the behaviour of the aortic wall and the movement of the implanted stent graft.
2. During implantation of the stent graft, after an intensity based registration of CTA and angiography data, the current navigation can be visualized in the 3D CT data set at any time. This includes solutions for electro-magnetic tracking of catheters as well as guide wires and stent grafts. Eventually, Our main goal is the creation of solutions that enable the surgeon to enhance the accuracy of the navigation and positioning, along with a minimum use of angiography, leading to less radiation exposure and less contrast agent injection.

Pictures

Figure 1:
Figure 2: Volume Rendering of CTA after stent implantation in decending aorta
Figure 3: Volume Rendering of CTA after stent implantation in decending aorta

Publications

2009
S. Demirci, G. Lejeune, N. Navab
Hybrid Deformable Model for Aneurysm Segmentation
IEEE International Symposium on Biomedical Imaging: From Nano to Macro (ISBI 2009), Boston, Massachusetts, USA, June 28 - July 1, 2009 (bib)
S. Demirci, F. Manstad-Hulaas, N. Navab
Extracting a Purely Non-Rigid Deformation Field of a Single Structure
Proceedings of Bildverarbeitung fuer die Medizin (BVM 2009), Heidelberg, Germany, March 2009 (bib)
S. Demirci, F. Manstad-Hulaas, N. Navab
Quantification of Abdominal Aortic Deformation after EVAR
SPIE Medical Imaging, Orlando, Florida, USA, 7-12 February 2009 (bib)
2008
S. Demirci, O. Kutter, F. Manstad-Hulaas, R. Bauernschmitt, N. Navab
Advanced 2D-3D Registration for Endovascular Aortic Interventions: Addressing Dissimilarity in Images
SPIE Medical Imaging, San Diego, California, USA, 16-21 February 2008 (bib)
2007
O. Kutter, S. Kettner (=Demirci), E.U. Braun, N. Navab, R. Lange, R. Bauernschmitt
Towards an Integrated Planning and Navigation System for Aortic Stent-Graft Placement
Proc. of Computer Assisted Radiology and Surgery (CARS), Berlin, Germany, June 2007. (bib)
2006
M. Feuerstein, K. Filippatos, O. Kutter, E.U. Schirmbeck, R. Bauernschmitt, N. Navab
A Novel Segmentation and Navigation Tool for Endovascular Stenting of Aortic Aneurysms
International Journal of Computer Assisted Radiology and Surgery, 2006; Vol. 1 Suppl. 1, page 280 - 282.
The original publication is available online at www.springerlink.com
(bib)
2005
R. Bauernschmitt, M. Feuerstein, E.U. Schirmbeck, N. Augustin, S.M. Wildhirt, R. Lange
Improvement of Endovascular Stent Grafting by Augmented Reality
Biomedizinische Technik (BMT 2005), Volume 50, Supplementary vol. 1, Part 2, pp. 1262 - 1263, Nuremberg, Germany, September 2005 (bib)
2004
R. Bauernschmitt, E.U. Schirmbeck, M. Groher, P. Keitler, M. Bauer, H. Najafi, G. Klinker, R. Lange
Navigierte Platzierung endovaskulärer Aortenstents
Z Kardiologie 2004 93 S3: 116 (bib)

Team

Contact Person(s)

Oliver Kutter
Dipl.-Inf. Univ. Oliver Kutter
Stefanie Demirci
Dipl.-Inf. Univ. Stefanie Demirci

Working Group

Frode Hulaas
Frode Hulaas
Robert Bauernschmitt
Prof. Dr. Robert Bauernschmitt
Wolfgang Goetz
Dr. med. Wolfgang Goetz
Yang Li
Dipl.-Tech. Math. Univ. Yang Li

Alumni

Eva Braun
Dr. med. Eva Braun
Marco Feuerstein
Dr. Marco Feuerstein
Martin Groher
Dr. Martin Groher
Peter Keitler
Dipl.-Inf. Univ. Peter Keitler

Location



Technische Universität München
Institut für Informatik / I16
Boltzmannstr. 3
85748 Garching bei München

Tel.: +49 89 289-17058
Fax: +49 89 289-17059
Visit our lab at Garching.



Deutsches Herzzentrum München
Klinik an der Technischen Universität München
Lazarettstr. 62
80636 München

Room: 215
Tel.: +49 89 1812 3710
Visit our lab at Deutsches Herzzentrum Muenchen.



internal project page

Please contact Stefanie Demirci
Oliver Kutter for available student projects within this research project.

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